</para>
</entry>
</row>
+
+ <row>
+ <entry role="func_table_entry">
+ <para role="func_signature">
+ <indexterm>
+ <primary>pg_set_attribute_stats</primary>
+ </indexterm>
+ <function>pg_set_attribute_stats</function> (
+ <parameter>relation</parameter> <type>regclass</type>,
+ <parameter>attname</parameter> <type>name</type>,
+ <parameter>inherited</parameter> <type>boolean</type>
+ <optional>, <parameter>null_frac</parameter> <type>real</type></optional>
+ <optional>, <parameter>avg_width</parameter> <type>integer</type></optional>
+ <optional>, <parameter>n_distinct</parameter> <type>real</type></optional>
+ <optional>, <parameter>most_common_vals</parameter> <type>text</type>, <parameter>most_common_freqs</parameter> <type>real[]</type> </optional>
+ <optional>, <parameter>histogram_bounds</parameter> <type>text</type> </optional>
+ <optional>, <parameter>correlation</parameter> <type>real</type> </optional>
+ <optional>, <parameter>most_common_elems</parameter> <type>text</type>, <parameter>most_common_elem_freqs</parameter> <type>real[]</type> </optional>
+ <optional>, <parameter>elem_count_histogram</parameter> <type>real[]</type> </optional>
+ <optional>, <parameter>range_length_histogram</parameter> <type>text</type> </optional>
+ <optional>, <parameter>range_empty_frac</parameter> <type>real</type> </optional>
+ <optional>, <parameter>range_bounds_histogram</parameter> <type>text</type> </optional> )
+ <returnvalue>void</returnvalue>
+ </para>
+ <para>
+ Creates or updates attribute-level statistics for the given relation
+ and attribute name to the specified values. The parameters correspond
+ to to attributes of the same name found in the <link
+ linkend="view-pg-stats"><structname>pg_stats</structname></link>
+ view.
+ </para>
+ <para>
+ Optional parameters default to <literal>NULL</literal>, which leave
+ the corresponding statistic unchanged.
+ </para>
+ <para>
+ Ordinarily, these statistics are collected automatically or updated
+ as a part of <xref linkend="sql-vacuum"/> or <xref
+ linkend="sql-analyze"/>, so it's not necessary to call this
+ function. However, it may be useful when testing the effects of
+ statistics on the planner to understand or anticipate plan changes.
+ </para>
+ <para>
+ The caller must have the <literal>MAINTAIN</literal> privilege on
+ the table or be the owner of the database.
+ </para>
+ </entry>
+ </row>
+
+ <row>
+ <entry role="func_table_entry">
+ <para role="func_signature">
+ <indexterm>
+ <primary>pg_clear_attribute_stats</primary>
+ </indexterm>
+ <function>pg_clear_attribute_stats</function> (
+ <parameter>relation</parameter> <type>regclass</type>,
+ <parameter>attname</parameter> <type>name</type>,
+ <parameter>inherited</parameter> <type>boolean</type> )
+ <returnvalue>boolean</returnvalue>
+ </para>
+ <para>
+ Clears table-level statistics for the given relation attribute, as
+ though the table was newly created.
+ </para>
+ <para>
+ The caller must have the <literal>MAINTAIN</literal> privilege on
+ the table or be the owner of the database.
+ </para>
+ </entry>
+ </row>
+
</tbody>
</tgroup>
</table>
CALLED ON NULL INPUT VOLATILE
AS 'pg_set_relation_stats';
+CREATE OR REPLACE FUNCTION
+ pg_set_attribute_stats(relation regclass,
+ attname name,
+ inherited bool,
+ null_frac real DEFAULT NULL,
+ avg_width integer DEFAULT NULL,
+ n_distinct real DEFAULT NULL,
+ most_common_vals text DEFAULT NULL,
+ most_common_freqs real[] DEFAULT NULL,
+ histogram_bounds text DEFAULT NULL,
+ correlation real DEFAULT NULL,
+ most_common_elems text DEFAULT NULL,
+ most_common_elem_freqs real[] DEFAULT NULL,
+ elem_count_histogram real[] DEFAULT NULL,
+ range_length_histogram text DEFAULT NULL,
+ range_empty_frac real DEFAULT NULL,
+ range_bounds_histogram text DEFAULT NULL)
+RETURNS void
+LANGUAGE INTERNAL
+CALLED ON NULL INPUT VOLATILE
+AS 'pg_set_attribute_stats';
+
--
-- The default permissions for functions mean that anyone can execute them.
-- A number of functions shouldn't be executable by just anyone, but rather
include $(top_builddir)/src/Makefile.global
OBJS = \
+ attribute_stats.o \
dependencies.o \
extended_stats.o \
mcv.o \
--- /dev/null
+/*-------------------------------------------------------------------------
+ * attribute_stats.c
+ *
+ * PostgreSQL relation attribute statistics manipulation.
+ *
+ * Code supporting the direct import of relation attribute statistics, similar
+ * to what is done by the ANALYZE command.
+ *
+ * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * IDENTIFICATION
+ * src/backend/statistics/attribute_stats.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "postgres.h"
+
+#include "access/heapam.h"
+#include "catalog/indexing.h"
+#include "catalog/pg_collation.h"
+#include "catalog/pg_operator.h"
+#include "nodes/nodeFuncs.h"
+#include "statistics/statistics.h"
+#include "statistics/stat_utils.h"
+#include "utils/array.h"
+#include "utils/builtins.h"
+#include "utils/fmgroids.h"
+#include "utils/lsyscache.h"
+#include "utils/syscache.h"
+
+#define DEFAULT_NULL_FRAC Float4GetDatum(0.0)
+#define DEFAULT_AVG_WIDTH Int32GetDatum(0) /* unknown */
+#define DEFAULT_N_DISTINCT Float4GetDatum(0.0) /* unknown */
+
+enum attribute_stats_argnum
+{
+ ATTRELATION_ARG = 0,
+ ATTNAME_ARG,
+ INHERITED_ARG,
+ NULL_FRAC_ARG,
+ AVG_WIDTH_ARG,
+ N_DISTINCT_ARG,
+ MOST_COMMON_VALS_ARG,
+ MOST_COMMON_FREQS_ARG,
+ HISTOGRAM_BOUNDS_ARG,
+ CORRELATION_ARG,
+ MOST_COMMON_ELEMS_ARG,
+ MOST_COMMON_ELEM_FREQS_ARG,
+ ELEM_COUNT_HISTOGRAM_ARG,
+ RANGE_LENGTH_HISTOGRAM_ARG,
+ RANGE_EMPTY_FRAC_ARG,
+ RANGE_BOUNDS_HISTOGRAM_ARG,
+ NUM_ATTRIBUTE_STATS_ARGS
+};
+
+static struct StatsArgInfo attarginfo[] =
+{
+ [ATTRELATION_ARG] = {"relation", REGCLASSOID},
+ [ATTNAME_ARG] = {"attname", NAMEOID},
+ [INHERITED_ARG] = {"inherited", BOOLOID},
+ [NULL_FRAC_ARG] = {"null_frac", FLOAT4OID},
+ [AVG_WIDTH_ARG] = {"avg_width", INT4OID},
+ [N_DISTINCT_ARG] = {"n_distinct", FLOAT4OID},
+ [MOST_COMMON_VALS_ARG] = {"most_common_vals", TEXTOID},
+ [MOST_COMMON_FREQS_ARG] = {"most_common_freqs", FLOAT4ARRAYOID},
+ [HISTOGRAM_BOUNDS_ARG] = {"histogram_bounds", TEXTOID},
+ [CORRELATION_ARG] = {"correlation", FLOAT4OID},
+ [MOST_COMMON_ELEMS_ARG] = {"most_common_elems", TEXTOID},
+ [MOST_COMMON_ELEM_FREQS_ARG] = {"most_common_elem_freqs", FLOAT4ARRAYOID},
+ [ELEM_COUNT_HISTOGRAM_ARG] = {"elem_count_histogram", FLOAT4ARRAYOID},
+ [RANGE_LENGTH_HISTOGRAM_ARG] = {"range_length_histogram", TEXTOID},
+ [RANGE_EMPTY_FRAC_ARG] = {"range_empty_frac", FLOAT4OID},
+ [RANGE_BOUNDS_HISTOGRAM_ARG] = {"range_bounds_histogram", TEXTOID},
+ [NUM_ATTRIBUTE_STATS_ARGS] = {0}
+};
+
+static bool attribute_statistics_update(FunctionCallInfo fcinfo, int elevel);
+static Node *get_attr_expr(Relation rel, int attnum);
+static void get_attr_stat_type(Oid reloid, AttrNumber attnum, int elevel,
+ Oid *atttypid, int32 *atttypmod,
+ char *atttyptype, Oid *atttypcoll,
+ Oid *eq_opr, Oid *lt_opr);
+static bool get_elem_stat_type(Oid atttypid, char atttyptype, int elevel,
+ Oid *elemtypid, Oid *elem_eq_opr);
+static Datum text_to_stavalues(const char *staname, FmgrInfo *array_in, Datum d,
+ Oid typid, int32 typmod, int elevel, bool *ok);
+static void set_stats_slot(Datum *values, bool *nulls, bool *replaces,
+ int16 stakind, Oid staop, Oid stacoll,
+ Datum stanumbers, bool stanumbers_isnull,
+ Datum stavalues, bool stavalues_isnull);
+static void upsert_pg_statistic(Relation starel, HeapTuple oldtup,
+ Datum *values, bool *nulls, bool *replaces);
+static bool delete_pg_statistic(Oid reloid, AttrNumber attnum, bool stainherit);
+static void init_empty_stats_tuple(Oid reloid, int16 attnum, bool inherited,
+ Datum *values, bool *nulls, bool *replaces);
+
+/*
+ * Insert or Update Attribute Statistics
+ *
+ * See pg_statistic.h for an explanation of how each statistic kind is
+ * stored. Custom statistics kinds are not supported.
+ *
+ * Depending on the statistics kind, we need to derive information from the
+ * attribute for which we're storing the stats. For instance, the MCVs are
+ * stored as an anyarray, and the representation of the array needs to store
+ * the correct element type, which must be derived from the attribute.
+ *
+ * Major errors, such as the table not existing, the attribute not existing,
+ * or a permissions failure are always reported at ERROR. Other errors, such
+ * as a conversion failure on one statistic kind, are reported at 'elevel',
+ * and other statistic kinds may still be updated.
+ */
+static bool
+attribute_statistics_update(FunctionCallInfo fcinfo, int elevel)
+{
+ Oid reloid;
+ Name attname;
+ bool inherited;
+ AttrNumber attnum;
+
+ Relation starel;
+ HeapTuple statup;
+
+ Oid atttypid = InvalidOid;
+ int32 atttypmod;
+ char atttyptype;
+ Oid atttypcoll = InvalidOid;
+ Oid eq_opr = InvalidOid;
+ Oid lt_opr = InvalidOid;
+
+ Oid elemtypid = InvalidOid;
+ Oid elem_eq_opr = InvalidOid;
+
+ FmgrInfo array_in_fn;
+
+ bool do_mcv = !PG_ARGISNULL(MOST_COMMON_FREQS_ARG) &&
+ !PG_ARGISNULL(MOST_COMMON_VALS_ARG);
+ bool do_histogram = !PG_ARGISNULL(HISTOGRAM_BOUNDS_ARG);
+ bool do_correlation = !PG_ARGISNULL(CORRELATION_ARG);
+ bool do_mcelem = !PG_ARGISNULL(MOST_COMMON_ELEMS_ARG) &&
+ !PG_ARGISNULL(MOST_COMMON_ELEM_FREQS_ARG);
+ bool do_dechist = !PG_ARGISNULL(ELEM_COUNT_HISTOGRAM_ARG);
+ bool do_bounds_histogram = !PG_ARGISNULL(RANGE_BOUNDS_HISTOGRAM_ARG);
+ bool do_range_length_histogram = !PG_ARGISNULL(RANGE_LENGTH_HISTOGRAM_ARG) &&
+ !PG_ARGISNULL(RANGE_EMPTY_FRAC_ARG);
+
+ Datum values[Natts_pg_statistic] = {0};
+ bool nulls[Natts_pg_statistic] = {0};
+ bool replaces[Natts_pg_statistic] = {0};
+
+ bool result = true;
+
+ stats_check_required_arg(fcinfo, attarginfo, ATTRELATION_ARG);
+ reloid = PG_GETARG_OID(ATTRELATION_ARG);
+
+ /* lock before looking up attribute */
+ stats_lock_check_privileges(reloid);
+
+ stats_check_required_arg(fcinfo, attarginfo, ATTNAME_ARG);
+ attname = PG_GETARG_NAME(ATTNAME_ARG);
+ attnum = get_attnum(reloid, NameStr(*attname));
+
+ stats_check_required_arg(fcinfo, attarginfo, INHERITED_ARG);
+ inherited = PG_GETARG_BOOL(INHERITED_ARG);
+
+ /*
+ * Check argument sanity. If some arguments are unusable, emit at elevel
+ * and set the corresponding argument to NULL in fcinfo.
+ */
+
+ if (!stats_check_arg_array(fcinfo, attarginfo, MOST_COMMON_FREQS_ARG,
+ elevel))
+ {
+ do_mcv = false;
+ result = false;
+ }
+
+ if (!stats_check_arg_array(fcinfo, attarginfo, MOST_COMMON_ELEM_FREQS_ARG,
+ elevel))
+ {
+ do_mcelem = false;
+ result = false;
+ }
+ if (!stats_check_arg_array(fcinfo, attarginfo, ELEM_COUNT_HISTOGRAM_ARG,
+ elevel))
+ {
+ do_dechist = false;
+ result = false;
+ }
+
+ if (!stats_check_arg_pair(fcinfo, attarginfo,
+ MOST_COMMON_VALS_ARG, MOST_COMMON_FREQS_ARG,
+ elevel))
+ {
+ do_mcv = false;
+ result = false;
+ }
+
+ if (!stats_check_arg_pair(fcinfo, attarginfo,
+ MOST_COMMON_ELEMS_ARG,
+ MOST_COMMON_ELEM_FREQS_ARG, elevel))
+ {
+ do_mcelem = false;
+ result = false;
+ }
+
+ if (!stats_check_arg_pair(fcinfo, attarginfo,
+ RANGE_LENGTH_HISTOGRAM_ARG,
+ RANGE_EMPTY_FRAC_ARG, elevel))
+ {
+ do_range_length_histogram = false;
+ result = false;
+ }
+
+ /* derive information from attribute */
+ get_attr_stat_type(reloid, attnum, elevel,
+ &atttypid, &atttypmod,
+ &atttyptype, &atttypcoll,
+ &eq_opr, <_opr);
+
+ /* if needed, derive element type */
+ if (do_mcelem || do_dechist)
+ {
+ if (!get_elem_stat_type(atttypid, atttyptype, elevel,
+ &elemtypid, &elem_eq_opr))
+ {
+ ereport(elevel,
+ (errmsg("unable to determine element type of attribute \"%s\"", NameStr(*attname)),
+ errdetail("Cannot set STATISTIC_KIND_MCELEM or STATISTIC_KIND_DECHIST.")));
+ elemtypid = InvalidOid;
+ elem_eq_opr = InvalidOid;
+
+ do_mcelem = false;
+ do_dechist = false;
+ result = false;
+ }
+ }
+
+ /* histogram and correlation require less-than operator */
+ if ((do_histogram || do_correlation) && !OidIsValid(lt_opr))
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("could not determine less-than operator for attribute \"%s\"", NameStr(*attname)),
+ errdetail("Cannot set STATISTIC_KIND_HISTOGRAM or STATISTIC_KIND_CORRELATION.")));
+
+ do_histogram = false;
+ do_correlation = false;
+ result = false;
+ }
+
+ /* only range types can have range stats */
+ if ((do_range_length_histogram || do_bounds_histogram) &&
+ !(atttyptype == TYPTYPE_RANGE || atttyptype == TYPTYPE_MULTIRANGE))
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("attribute \"%s\" is not a range type", NameStr(*attname)),
+ errdetail("Cannot set STATISTIC_KIND_RANGE_LENGTH_HISTOGRAM or STATISTIC_KIND_BOUNDS_HISTOGRAM.")));
+
+ do_bounds_histogram = false;
+ do_range_length_histogram = false;
+ result = false;
+ }
+
+ fmgr_info(F_ARRAY_IN, &array_in_fn);
+
+ starel = table_open(StatisticRelationId, RowExclusiveLock);
+
+ statup = SearchSysCache3(STATRELATTINH, reloid, attnum, inherited);
+
+ /* initialize from existing tuple if exists */
+ if (HeapTupleIsValid(statup))
+ heap_deform_tuple(statup, RelationGetDescr(starel), values, nulls);
+ else
+ init_empty_stats_tuple(reloid, attnum, inherited, values, nulls,
+ replaces);
+
+ /* if specified, set to argument values */
+ if (!PG_ARGISNULL(NULL_FRAC_ARG))
+ {
+ values[Anum_pg_statistic_stanullfrac - 1] = PG_GETARG_DATUM(NULL_FRAC_ARG);
+ replaces[Anum_pg_statistic_stanullfrac - 1] = true;
+ }
+ if (!PG_ARGISNULL(AVG_WIDTH_ARG))
+ {
+ values[Anum_pg_statistic_stawidth - 1] = PG_GETARG_DATUM(AVG_WIDTH_ARG);
+ replaces[Anum_pg_statistic_stawidth - 1] = true;
+ }
+ if (!PG_ARGISNULL(N_DISTINCT_ARG))
+ {
+ values[Anum_pg_statistic_stadistinct - 1] = PG_GETARG_DATUM(N_DISTINCT_ARG);
+ replaces[Anum_pg_statistic_stadistinct - 1] = true;
+ }
+
+ /* STATISTIC_KIND_MCV */
+ if (do_mcv)
+ {
+ bool converted;
+ Datum stanumbers = PG_GETARG_DATUM(MOST_COMMON_FREQS_ARG);
+ Datum stavalues = text_to_stavalues("most_common_vals",
+ &array_in_fn,
+ PG_GETARG_DATUM(MOST_COMMON_VALS_ARG),
+ atttypid, atttypmod,
+ elevel, &converted);
+
+ if (converted)
+ {
+ set_stats_slot(values, nulls, replaces,
+ STATISTIC_KIND_MCV,
+ eq_opr, atttypcoll,
+ stanumbers, false, stavalues, false);
+ }
+ else
+ result = false;
+ }
+
+ /* STATISTIC_KIND_HISTOGRAM */
+ if (do_histogram)
+ {
+ Datum stavalues;
+ bool converted = false;
+
+ stavalues = text_to_stavalues("histogram_bounds",
+ &array_in_fn,
+ PG_GETARG_DATUM(HISTOGRAM_BOUNDS_ARG),
+ atttypid, atttypmod, elevel,
+ &converted);
+
+ if (converted)
+ {
+ set_stats_slot(values, nulls, replaces,
+ STATISTIC_KIND_HISTOGRAM,
+ lt_opr, atttypcoll,
+ 0, true, stavalues, false);
+ }
+ else
+ result = false;
+ }
+
+ /* STATISTIC_KIND_CORRELATION */
+ if (do_correlation)
+ {
+ Datum elems[] = {PG_GETARG_DATUM(CORRELATION_ARG)};
+ ArrayType *arry = construct_array_builtin(elems, 1, FLOAT4OID);
+ Datum stanumbers = PointerGetDatum(arry);
+
+ set_stats_slot(values, nulls, replaces,
+ STATISTIC_KIND_CORRELATION,
+ lt_opr, atttypcoll,
+ stanumbers, false, 0, true);
+ }
+
+ /* STATISTIC_KIND_MCELEM */
+ if (do_mcelem)
+ {
+ Datum stanumbers = PG_GETARG_DATUM(MOST_COMMON_ELEM_FREQS_ARG);
+ bool converted = false;
+ Datum stavalues;
+
+ stavalues = text_to_stavalues("most_common_elems",
+ &array_in_fn,
+ PG_GETARG_DATUM(MOST_COMMON_ELEMS_ARG),
+ elemtypid, atttypmod,
+ elevel, &converted);
+
+ if (converted)
+ {
+ set_stats_slot(values, nulls, replaces,
+ STATISTIC_KIND_MCELEM,
+ elem_eq_opr, atttypcoll,
+ stanumbers, false, stavalues, false);
+ }
+ else
+ result = false;
+ }
+
+ /* STATISTIC_KIND_DECHIST */
+ if (do_dechist)
+ {
+ Datum stanumbers = PG_GETARG_DATUM(ELEM_COUNT_HISTOGRAM_ARG);
+
+ set_stats_slot(values, nulls, replaces,
+ STATISTIC_KIND_DECHIST,
+ elem_eq_opr, atttypcoll,
+ stanumbers, false, 0, true);
+ }
+
+ /*
+ * STATISTIC_KIND_BOUNDS_HISTOGRAM
+ *
+ * This stakind appears before STATISTIC_KIND_RANGE_LENGTH_HISTOGRAM even
+ * though it is numerically greater, and all other stakinds appear in
+ * numerical order. We duplicate this quirk for consistency.
+ */
+ if (do_bounds_histogram)
+ {
+ bool converted = false;
+ Datum stavalues;
+
+ stavalues = text_to_stavalues("range_bounds_histogram",
+ &array_in_fn,
+ PG_GETARG_DATUM(RANGE_BOUNDS_HISTOGRAM_ARG),
+ atttypid, atttypmod,
+ elevel, &converted);
+
+ if (converted)
+ {
+ set_stats_slot(values, nulls, replaces,
+ STATISTIC_KIND_BOUNDS_HISTOGRAM,
+ InvalidOid, InvalidOid,
+ 0, true, stavalues, false);
+ }
+ else
+ result = false;
+ }
+
+ /* STATISTIC_KIND_RANGE_LENGTH_HISTOGRAM */
+ if (do_range_length_histogram)
+ {
+ /* The anyarray is always a float8[] for this stakind */
+ Datum elems[] = {PG_GETARG_DATUM(RANGE_EMPTY_FRAC_ARG)};
+ ArrayType *arry = construct_array_builtin(elems, 1, FLOAT4OID);
+ Datum stanumbers = PointerGetDatum(arry);
+
+ bool converted = false;
+ Datum stavalues;
+
+ stavalues = text_to_stavalues("range_length_histogram",
+ &array_in_fn,
+ PG_GETARG_DATUM(RANGE_LENGTH_HISTOGRAM_ARG),
+ FLOAT8OID, 0, elevel, &converted);
+
+ if (converted)
+ {
+ set_stats_slot(values, nulls, replaces,
+ STATISTIC_KIND_RANGE_LENGTH_HISTOGRAM,
+ Float8LessOperator, InvalidOid,
+ stanumbers, false, stavalues, false);
+ }
+ else
+ result = false;
+ }
+
+ upsert_pg_statistic(starel, statup, values, nulls, replaces);
+
+ if (HeapTupleIsValid(statup))
+ ReleaseSysCache(statup);
+ table_close(starel, RowExclusiveLock);
+
+ return result;
+}
+
+/*
+ * If this relation is an index and that index has expressions in it, and
+ * the attnum specified is known to be an expression, then we must walk
+ * the list attributes up to the specified attnum to get the right
+ * expression.
+ */
+static Node *
+get_attr_expr(Relation rel, int attnum)
+{
+ if ((rel->rd_rel->relkind == RELKIND_INDEX
+ || (rel->rd_rel->relkind == RELKIND_PARTITIONED_INDEX))
+ && (rel->rd_indexprs != NIL)
+ && (rel->rd_index->indkey.values[attnum - 1] == 0))
+ {
+ ListCell *indexpr_item = list_head(rel->rd_indexprs);
+
+ for (int i = 0; i < attnum - 1; i++)
+ if (rel->rd_index->indkey.values[i] == 0)
+ indexpr_item = lnext(rel->rd_indexprs, indexpr_item);
+
+ if (indexpr_item == NULL) /* shouldn't happen */
+ elog(ERROR, "too few entries in indexprs list");
+
+ return (Node *) lfirst(indexpr_item);
+ }
+ return NULL;
+}
+
+/*
+ * Derive type information from the attribute.
+ */
+static void
+get_attr_stat_type(Oid reloid, AttrNumber attnum, int elevel,
+ Oid *atttypid, int32 *atttypmod,
+ char *atttyptype, Oid *atttypcoll,
+ Oid *eq_opr, Oid *lt_opr)
+{
+ Relation rel = relation_open(reloid, AccessShareLock);
+ Form_pg_attribute attr;
+ HeapTuple atup;
+ Node *expr;
+ TypeCacheEntry *typcache;
+
+ atup = SearchSysCache2(ATTNUM, ObjectIdGetDatum(reloid),
+ Int16GetDatum(attnum));
+
+ /* Attribute not found */
+ if (!HeapTupleIsValid(atup))
+ ereport(ERROR,
+ (errcode(ERRCODE_UNDEFINED_COLUMN),
+ errmsg("attribute %d of relation \"%s\" does not exist",
+ attnum, RelationGetRelationName(rel))));
+
+ attr = (Form_pg_attribute) GETSTRUCT(atup);
+
+ if (attr->attisdropped)
+ ereport(ERROR,
+ (errcode(ERRCODE_UNDEFINED_COLUMN),
+ errmsg("attribute %d of relation \"%s\" does not exist",
+ attnum, RelationGetRelationName(rel))));
+
+ expr = get_attr_expr(rel, attr->attnum);
+
+ /*
+ * When analyzing an expression index, believe the expression tree's type
+ * not the column datatype --- the latter might be the opckeytype storage
+ * type of the opclass, which is not interesting for our purposes. This
+ * mimics the behvior of examine_attribute().
+ */
+ if (expr == NULL)
+ {
+ *atttypid = attr->atttypid;
+ *atttypmod = attr->atttypmod;
+ *atttypcoll = attr->attcollation;
+ }
+ else
+ {
+ *atttypid = exprType(expr);
+ *atttypmod = exprTypmod(expr);
+
+ if (OidIsValid(attr->attcollation))
+ *atttypcoll = attr->attcollation;
+ else
+ *atttypcoll = exprCollation(expr);
+ }
+ ReleaseSysCache(atup);
+
+ /*
+ * If it's a multirange, step down to the range type, as is done by
+ * multirange_typanalyze().
+ */
+ if (type_is_multirange(*atttypid))
+ *atttypid = get_multirange_range(*atttypid);
+
+ /* finds the right operators even if atttypid is a domain */
+ typcache = lookup_type_cache(*atttypid, TYPECACHE_LT_OPR | TYPECACHE_EQ_OPR);
+ *atttyptype = typcache->typtype;
+ *eq_opr = typcache->eq_opr;
+ *lt_opr = typcache->lt_opr;
+
+ /*
+ * Special case: collation for tsvector is DEFAULT_COLLATION_OID. See
+ * compute_tsvector_stats().
+ */
+ if (*atttypid == TSVECTOROID)
+ *atttypcoll = DEFAULT_COLLATION_OID;
+
+ relation_close(rel, NoLock);
+}
+
+/*
+ * Derive element type information from the attribute type.
+ */
+static bool
+get_elem_stat_type(Oid atttypid, char atttyptype, int elevel,
+ Oid *elemtypid, Oid *elem_eq_opr)
+{
+ TypeCacheEntry *elemtypcache;
+
+ if (atttypid == TSVECTOROID)
+ {
+ /*
+ * Special case: element type for tsvector is text. See
+ * compute_tsvector_stats().
+ */
+ *elemtypid = TEXTOID;
+ }
+ else
+ {
+ /* find underlying element type through any domain */
+ *elemtypid = get_base_element_type(atttypid);
+ }
+
+ if (!OidIsValid(*elemtypid))
+ return false;
+
+ /* finds the right operator even if elemtypid is a domain */
+ elemtypcache = lookup_type_cache(*elemtypid, TYPECACHE_EQ_OPR);
+ if (!OidIsValid(elemtypcache->eq_opr))
+ return false;
+
+ *elem_eq_opr = elemtypcache->eq_opr;
+
+ return true;
+}
+
+/*
+ * Cast a text datum into an array with element type elemtypid.
+ *
+ * If an error is encountered, capture it and re-throw at elevel, and set ok
+ * to false. If the resulting array contains NULLs, raise an error at elevel
+ * and set ok to false. Otherwise, set ok to true.
+ */
+static Datum
+text_to_stavalues(const char *staname, FmgrInfo *array_in, Datum d, Oid typid,
+ int32 typmod, int elevel, bool *ok)
+{
+ LOCAL_FCINFO(fcinfo, 8);
+ char *s;
+ Datum result;
+ ErrorSaveContext escontext = {T_ErrorSaveContext};
+
+ escontext.details_wanted = true;
+
+ s = TextDatumGetCString(d);
+
+ InitFunctionCallInfoData(*fcinfo, array_in, 3, InvalidOid,
+ (Node *) &escontext, NULL);
+
+ fcinfo->args[0].value = CStringGetDatum(s);
+ fcinfo->args[0].isnull = false;
+ fcinfo->args[1].value = ObjectIdGetDatum(typid);
+ fcinfo->args[1].isnull = false;
+ fcinfo->args[2].value = Int32GetDatum(typmod);
+ fcinfo->args[2].isnull = false;
+
+ result = FunctionCallInvoke(fcinfo);
+
+ pfree(s);
+
+ if (SOFT_ERROR_OCCURRED(&escontext))
+ {
+ if (elevel != ERROR)
+ escontext.error_data->elevel = elevel;
+ ThrowErrorData(escontext.error_data);
+ *ok = false;
+ return (Datum) 0;
+ }
+
+ if (array_contains_nulls(DatumGetArrayTypeP(result)))
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("\"%s\" array cannot contain NULL values", staname)));
+ *ok = false;
+ return (Datum) 0;
+ }
+
+ *ok = true;
+
+ return result;
+}
+
+/*
+ * Find and update the slot with the given stakind, or use the first empty
+ * slot.
+ */
+static void
+set_stats_slot(Datum *values, bool *nulls, bool *replaces,
+ int16 stakind, Oid staop, Oid stacoll,
+ Datum stanumbers, bool stanumbers_isnull,
+ Datum stavalues, bool stavalues_isnull)
+{
+ int slotidx;
+ int first_empty = -1;
+ AttrNumber stakind_attnum;
+ AttrNumber staop_attnum;
+ AttrNumber stacoll_attnum;
+
+ /* find existing slot with given stakind */
+ for (slotidx = 0; slotidx < STATISTIC_NUM_SLOTS; slotidx++)
+ {
+ stakind_attnum = Anum_pg_statistic_stakind1 - 1 + slotidx;
+
+ if (first_empty < 0 &&
+ DatumGetInt16(values[stakind_attnum]) == 0)
+ first_empty = slotidx;
+ if (DatumGetInt16(values[stakind_attnum]) == stakind)
+ break;
+ }
+
+ if (slotidx >= STATISTIC_NUM_SLOTS && first_empty >= 0)
+ slotidx = first_empty;
+
+ if (slotidx >= STATISTIC_NUM_SLOTS)
+ ereport(ERROR,
+ (errmsg("maximum number of statistics slots exceeded: %d",
+ slotidx + 1)));
+
+ stakind_attnum = Anum_pg_statistic_stakind1 - 1 + slotidx;
+ staop_attnum = Anum_pg_statistic_staop1 - 1 + slotidx;
+ stacoll_attnum = Anum_pg_statistic_stacoll1 - 1 + slotidx;
+
+ if (DatumGetInt16(values[stakind_attnum]) != stakind)
+ {
+ values[stakind_attnum] = Int16GetDatum(stakind);
+ replaces[stakind_attnum] = true;
+ }
+ if (DatumGetObjectId(values[staop_attnum]) != staop)
+ {
+ values[staop_attnum] = ObjectIdGetDatum(staop);
+ replaces[staop_attnum] = true;
+ }
+ if (DatumGetObjectId(values[stacoll_attnum]) != stacoll)
+ {
+ values[stacoll_attnum] = ObjectIdGetDatum(stacoll);
+ replaces[stacoll_attnum] = true;
+ }
+ if (!stanumbers_isnull)
+ {
+ values[Anum_pg_statistic_stanumbers1 - 1 + slotidx] = stanumbers;
+ nulls[Anum_pg_statistic_stanumbers1 - 1 + slotidx] = false;
+ replaces[Anum_pg_statistic_stanumbers1 - 1 + slotidx] = true;
+ }
+ if (!stavalues_isnull)
+ {
+ values[Anum_pg_statistic_stavalues1 - 1 + slotidx] = stavalues;
+ nulls[Anum_pg_statistic_stavalues1 - 1 + slotidx] = false;
+ replaces[Anum_pg_statistic_stavalues1 - 1 + slotidx] = true;
+ }
+}
+
+/*
+ * Upsert the pg_statistic record.
+ */
+static void
+upsert_pg_statistic(Relation starel, HeapTuple oldtup,
+ Datum *values, bool *nulls, bool *replaces)
+{
+ HeapTuple newtup;
+
+ if (HeapTupleIsValid(oldtup))
+ {
+ newtup = heap_modify_tuple(oldtup, RelationGetDescr(starel),
+ values, nulls, replaces);
+ CatalogTupleUpdate(starel, &newtup->t_self, newtup);
+ }
+ else
+ {
+ newtup = heap_form_tuple(RelationGetDescr(starel), values, nulls);
+ CatalogTupleInsert(starel, newtup);
+ }
+
+ heap_freetuple(newtup);
+}
+
+/*
+ * Delete pg_statistic record.
+ */
+static bool
+delete_pg_statistic(Oid reloid, AttrNumber attnum, bool stainherit)
+{
+ Relation sd = table_open(StatisticRelationId, RowExclusiveLock);
+ HeapTuple oldtup;
+
+ /* Is there already a pg_statistic tuple for this attribute? */
+ oldtup = SearchSysCache3(STATRELATTINH,
+ ObjectIdGetDatum(reloid),
+ Int16GetDatum(attnum),
+ BoolGetDatum(stainherit));
+
+ if (HeapTupleIsValid(oldtup))
+ {
+ CatalogTupleDelete(sd, &oldtup->t_self);
+ ReleaseSysCache(oldtup);
+ table_close(sd, RowExclusiveLock);
+ return true;
+ }
+
+ table_close(sd, RowExclusiveLock);
+ return false;
+}
+
+/*
+ * Initialize values and nulls for a new stats tuple.
+ */
+static void
+init_empty_stats_tuple(Oid reloid, int16 attnum, bool inherited,
+ Datum *values, bool *nulls, bool *replaces)
+{
+ memset(nulls, true, sizeof(bool) * Natts_pg_statistic);
+ memset(replaces, true, sizeof(bool) * Natts_pg_statistic);
+
+ /* must initialize non-NULL attributes */
+
+ values[Anum_pg_statistic_starelid - 1] = ObjectIdGetDatum(reloid);
+ nulls[Anum_pg_statistic_starelid - 1] = false;
+ values[Anum_pg_statistic_staattnum - 1] = Int16GetDatum(attnum);
+ nulls[Anum_pg_statistic_staattnum - 1] = false;
+ values[Anum_pg_statistic_stainherit - 1] = BoolGetDatum(inherited);
+ nulls[Anum_pg_statistic_stainherit - 1] = false;
+
+ values[Anum_pg_statistic_stanullfrac - 1] = DEFAULT_NULL_FRAC;
+ nulls[Anum_pg_statistic_stanullfrac - 1] = false;
+ values[Anum_pg_statistic_stawidth - 1] = DEFAULT_AVG_WIDTH;
+ nulls[Anum_pg_statistic_stawidth - 1] = false;
+ values[Anum_pg_statistic_stadistinct - 1] = DEFAULT_N_DISTINCT;
+ nulls[Anum_pg_statistic_stadistinct - 1] = false;
+
+ /* initialize stakind, staop, and stacoll slots */
+ for (int slotnum = 0; slotnum < STATISTIC_NUM_SLOTS; slotnum++)
+ {
+ values[Anum_pg_statistic_stakind1 + slotnum - 1] = (Datum) 0;
+ nulls[Anum_pg_statistic_stakind1 + slotnum - 1] = false;
+ values[Anum_pg_statistic_staop1 + slotnum - 1] = InvalidOid;
+ nulls[Anum_pg_statistic_staop1 + slotnum - 1] = false;
+ values[Anum_pg_statistic_stacoll1 + slotnum - 1] = InvalidOid;
+ nulls[Anum_pg_statistic_stacoll1 + slotnum - 1] = false;
+ }
+}
+
+/*
+ * Import statistics for a given relation attribute.
+ *
+ * Inserts or replaces a row in pg_statistic for the given relation and
+ * attribute name. It takes input parameters that correspond to columns in the
+ * view pg_stats.
+ *
+ * Parameters null_frac, avg_width, and n_distinct all correspond to NOT NULL
+ * columns in pg_statistic. The remaining parameters all belong to a specific
+ * stakind. Some stakinds require multiple parameters, which must be specified
+ * together (or neither specified).
+ *
+ * Parameters are only superficially validated. Omitting a parameter or
+ * passing NULL leaves the statistic unchanged.
+ *
+ * Parameters corresponding to ANYARRAY columns are instead passed in as text
+ * values, which is a valid input string for an array of the type or element
+ * type of the attribute. Any error generated by the array_in() function will
+ * in turn fail the function.
+ */
+Datum
+pg_set_attribute_stats(PG_FUNCTION_ARGS)
+{
+ attribute_statistics_update(fcinfo, ERROR);
+ PG_RETURN_VOID();
+}
+
+/*
+ * Delete statistics for the given attribute.
+ */
+Datum
+pg_clear_attribute_stats(PG_FUNCTION_ARGS)
+{
+ Oid reloid;
+ Name attname;
+ AttrNumber attnum;
+ bool inherited;
+
+ stats_check_required_arg(fcinfo, attarginfo, ATTRELATION_ARG);
+ reloid = PG_GETARG_OID(ATTRELATION_ARG);
+
+ stats_lock_check_privileges(reloid);
+
+ stats_check_required_arg(fcinfo, attarginfo, ATTNAME_ARG);
+ attname = PG_GETARG_NAME(ATTNAME_ARG);
+ attnum = get_attnum(reloid, NameStr(*attname));
+
+ stats_check_required_arg(fcinfo, attarginfo, INHERITED_ARG);
+ inherited = PG_GETARG_BOOL(INHERITED_ARG);
+
+ delete_pg_statistic(reloid, attnum, inherited);
+ PG_RETURN_VOID();
+}
# Copyright (c) 2022-2024, PostgreSQL Global Development Group
backend_sources += files(
+ 'attribute_stats.c',
'dependencies.c',
'extended_stats.c',
'mcv.c',
arginfo[argnum].argname)));
}
+/*
+ * Check that argument is either NULL or a one dimensional array with no
+ * NULLs.
+ *
+ * If a problem is found, emit at elevel, and return false. Otherwise return
+ * true.
+ */
+bool
+stats_check_arg_array(FunctionCallInfo fcinfo,
+ struct StatsArgInfo *arginfo,
+ int argnum, int elevel)
+{
+ ArrayType *arr;
+
+ if (PG_ARGISNULL(argnum))
+ return true;
+
+ arr = DatumGetArrayTypeP(PG_GETARG_DATUM(argnum));
+
+ if (ARR_NDIM(arr) != 1)
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("\"%s\" cannot be a multidimensional array",
+ arginfo[argnum].argname)));
+ return false;
+ }
+
+ if (array_contains_nulls(arr))
+ {
+ ereport(elevel,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("\"%s\" array cannot contain NULL values",
+ arginfo[argnum].argname)));
+ return false;
+ }
+
+ return true;
+}
+
+/*
+ * Enforce parameter pairs that must be specified together (or not at all) for
+ * a particular stakind, such as most_common_vals and most_common_freqs for
+ * STATISTIC_KIND_MCV.
+ *
+ * If a problem is found, emit at elevel, and return false. Otherwise return
+ * true.
+ */
+bool
+stats_check_arg_pair(FunctionCallInfo fcinfo,
+ struct StatsArgInfo *arginfo,
+ int argnum1, int argnum2, int elevel)
+{
+ if (PG_ARGISNULL(argnum1) && PG_ARGISNULL(argnum2))
+ return true;
+
+ if (PG_ARGISNULL(argnum1) || PG_ARGISNULL(argnum2))
+ {
+ int nullarg = PG_ARGISNULL(argnum1) ? argnum1 : argnum2;
+ int otherarg = PG_ARGISNULL(argnum1) ? argnum2 : argnum1;
+
+ ereport(elevel,
+ (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("\"%s\" must be specified when \"%s\" is specified",
+ arginfo[nullarg].argname,
+ arginfo[otherarg].argname)));
+
+ return false;
+ }
+
+ return true;
+}
+
/*
* Lock relation in ShareUpdateExclusive mode, check privileges, and close the
* relation (but retain the lock).
*/
/* yyyymmddN */
-#define CATALOG_VERSION_NO 202410221
+#define CATALOG_VERSION_NO 202410222
#endif
proargnames => '{summarized_tli,summarized_lsn,pending_lsn,summarizer_pid}',
prosrc => 'pg_get_wal_summarizer_state' },
+# Statistics Import
+{ oid => '9162',
+ descr => 'set statistics on attribute',
+ proname => 'pg_set_attribute_stats', provolatile => 'v', proisstrict => 'f',
+ proparallel => 'u', prorettype => 'void',
+ proargtypes => 'regclass name bool float4 int4 float4 text _float4 text float4 text _float4 _float4 text float4 text',
+ proargnames => '{relation,attname,inherited,null_frac,avg_width,n_distinct,most_common_vals,most_common_freqs,histogram_bounds,correlation,most_common_elems,most_common_elem_freqs,elem_count_histogram,range_length_histogram,range_empty_frac,range_bounds_histogram}',
+ prosrc => 'pg_set_attribute_stats' },
+{ oid => '9163',
+ descr => 'clear statistics on attribute',
+ proname => 'pg_clear_attribute_stats', provolatile => 'v', proisstrict => 'f',
+ proparallel => 'u', prorettype => 'void',
+ proargtypes => 'regclass name bool',
+ proargnames => '{relation,attname,inherited}',
+ prosrc => 'pg_clear_attribute_stats' },
{ oid => '9944',
descr => 'set statistics on relation',
proname => 'pg_set_relation_stats', provolatile => 'v', proisstrict => 'f',
extern void stats_check_required_arg(FunctionCallInfo fcinfo,
struct StatsArgInfo *arginfo,
int argnum);
+extern bool stats_check_arg_array(FunctionCallInfo fcinfo,
+ struct StatsArgInfo *arginfo, int argnum,
+ int elevel);
+extern bool stats_check_arg_pair(FunctionCallInfo fcinfo,
+ struct StatsArgInfo *arginfo,
+ int argnum1, int argnum2, int elevel);
+
extern void stats_lock_check_privileges(Oid reloid);
#endif /* STATS_UTILS_H */
(1 row)
+-- error: object doesn't exist
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => '0'::oid,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+ERROR: could not open relation with OID 0
+-- error: relation null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => NULL::oid,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+ERROR: "relation" cannot be NULL
+-- error: attname null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => NULL::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+ERROR: "attname" cannot be NULL
+-- error: inherited null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => NULL::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+ERROR: "inherited" cannot be NULL
+-- error: null_frac null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => NULL::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+ pg_set_attribute_stats
+------------------------
+
+(1 row)
+
+-- error: avg_width null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => NULL::integer,
+ n_distinct => 0.3::real);
+ pg_set_attribute_stats
+------------------------
+
+(1 row)
+
+-- error: avg_width null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => NULL::real);
+ pg_set_attribute_stats
+------------------------
+
+(1 row)
+
+-- ok: no stakinds
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+ pg_set_attribute_stats
+------------------------
+
+(1 row)
+
+SELECT stanullfrac, stawidth, stadistinct
+FROM pg_statistic
+WHERE starelid = 'stats_import.test'::regclass;
+ stanullfrac | stawidth | stadistinct
+-------------+----------+-------------
+ 0.1 | 2 | 0.3
+(1 row)
+
+-- error: mcv / mcf null mismatch
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_freqs => '{0.1,0.2,0.3}'::real[]
+ );
+ERROR: "most_common_vals" must be specified when "most_common_freqs" is specified
+-- error: mcv / mcf null mismatch part 2
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_vals => '{1,2,3}'::text
+ );
+ERROR: "most_common_freqs" must be specified when "most_common_vals" is specified
+-- error: mcv / mcf type mismatch
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_vals => '{2023-09-30,2024-10-31,3}'::text,
+ most_common_freqs => '{0.2,0.1}'::real[]
+ );
+ERROR: invalid input syntax for type integer: "2023-09-30"
+-- warning: mcv cast failure
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_vals => '{2,four,3}'::text,
+ most_common_freqs => '{0.3,0.25,0.05}'::real[]
+ );
+ERROR: invalid input syntax for type integer: "four"
+-- ok: mcv+mcf
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_vals => '{2,1,3}'::text,
+ most_common_freqs => '{0.3,0.25,0.05}'::real[]
+ );
+ pg_set_attribute_stats
+------------------------
+
+(1 row)
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'id';
+ schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
+--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
+ stats_import | test | id | f | 0.5 | 2 | -0.1 | {2,1,3} | {0.3,0.25,0.05} | | | | | | | |
+(1 row)
+
+-- error: histogram elements null value
+-- this generates no warnings, but perhaps it should
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ histogram_bounds => '{1,NULL,3,4}'::text
+ );
+ERROR: "histogram_bounds" array cannot contain NULL values
+-- ok: histogram_bounds
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ histogram_bounds => '{1,2,3,4}'::text
+ );
+ pg_set_attribute_stats
+------------------------
+
+(1 row)
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'id';
+ schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
+--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
+ stats_import | test | id | f | 0.5 | 2 | -0.1 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | |
+(1 row)
+
+-- ok: correlation
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ correlation => 0.5::real);
+ pg_set_attribute_stats
+------------------------
+
+(1 row)
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'id';
+ schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
+--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
+ stats_import | test | id | f | 0.5 | 2 | -0.1 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | 0.5 | | | | | |
+(1 row)
+
+-- error: scalars can't have mcelem
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_elems => '{1,3}'::text,
+ most_common_elem_freqs => '{0.3,0.2,0.2,0.3,0.0}'::real[]
+ );
+ERROR: unable to determine element type of attribute "id"
+DETAIL: Cannot set STATISTIC_KIND_MCELEM or STATISTIC_KIND_DECHIST.
+-- error: mcelem / mcelem mismatch
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'tags'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_elems => '{one,two}'::text
+ );
+ERROR: "most_common_elem_freqs" must be specified when "most_common_elems" is specified
+-- error: mcelem / mcelem null mismatch part 2
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'tags'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_elem_freqs => '{0.3,0.2,0.2,0.3}'::real[]
+ );
+ERROR: "most_common_elems" must be specified when "most_common_elem_freqs" is specified
+-- ok: mcelem
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'tags'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_elems => '{one,three}'::text,
+ most_common_elem_freqs => '{0.3,0.2,0.2,0.3,0.0}'::real[]
+ );
+ pg_set_attribute_stats
+------------------------
+
+(1 row)
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'tags';
+ schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
+--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
+ stats_import | test | tags | f | 0.5 | 2 | -0.1 | | | | | {one,three} | {0.3,0.2,0.2,0.3,0} | | | |
+(1 row)
+
+-- error: scalars can't have elem_count_histogram
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ elem_count_histogram => '{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[]
+ );
+ERROR: unable to determine element type of attribute "id"
+DETAIL: Cannot set STATISTIC_KIND_MCELEM or STATISTIC_KIND_DECHIST.
+-- error: elem_count_histogram null element
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'tags'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ elem_count_histogram => '{1,1,NULL,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[]
+ );
+ERROR: "elem_count_histogram" array cannot contain NULL values
+-- ok: elem_count_histogram
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'tags'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ elem_count_histogram => '{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[]
+ );
+ pg_set_attribute_stats
+------------------------
+
+(1 row)
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'tags';
+ schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
+--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------+------------------+------------------------
+ stats_import | test | tags | f | 0.5 | 2 | -0.1 | | | | | {one,three} | {0.3,0.2,0.2,0.3,0} | {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1} | | |
+(1 row)
+
+-- error: scalars can't have range stats
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_empty_frac => 0.5::real,
+ range_length_histogram => '{399,499,Infinity}'::text
+ );
+ERROR: attribute "id" is not a range type
+DETAIL: Cannot set STATISTIC_KIND_RANGE_LENGTH_HISTOGRAM or STATISTIC_KIND_BOUNDS_HISTOGRAM.
+-- error: range_empty_frac range_length_hist null mismatch
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'arange'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_length_histogram => '{399,499,Infinity}'::text
+ );
+ERROR: "range_empty_frac" must be specified when "range_length_histogram" is specified
+-- error: range_empty_frac range_length_hist null mismatch part 2
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'arange'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_empty_frac => 0.5::real
+ );
+ERROR: "range_length_histogram" must be specified when "range_empty_frac" is specified
+-- ok: range_empty_frac + range_length_hist
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'arange'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_empty_frac => 0.5::real,
+ range_length_histogram => '{399,499,Infinity}'::text
+ );
+ pg_set_attribute_stats
+------------------------
+
+(1 row)
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'arange';
+ schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
+--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+------------------------
+ stats_import | test | arange | f | 0.5 | 2 | -0.1 | | | | | | | | {399,499,Infinity} | 0.5 |
+(1 row)
+
+-- error: scalars can't have range stats
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_bounds_histogram => '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text
+ );
+ERROR: attribute "id" is not a range type
+DETAIL: Cannot set STATISTIC_KIND_RANGE_LENGTH_HISTOGRAM or STATISTIC_KIND_BOUNDS_HISTOGRAM.
+-- ok: range_bounds_histogram
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'arange'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_bounds_histogram => '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text
+ );
+ pg_set_attribute_stats
+------------------------
+
+(1 row)
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'arange';
+ schemaname | tablename | attname | inherited | null_frac | avg_width | n_distinct | most_common_vals | most_common_freqs | histogram_bounds | correlation | most_common_elems | most_common_elem_freqs | elem_count_histogram | range_length_histogram | range_empty_frac | range_bounds_histogram
+--------------+-----------+---------+-----------+-----------+-----------+------------+------------------+-------------------+------------------+-------------+-------------------+------------------------+----------------------+------------------------+------------------+--------------------------------------
+ stats_import | test | arange | f | 0.5 | 2 | -0.1 | | | | | | | | {399,499,Infinity} | 0.5 | {"[-1,1)","[0,4)","[1,4)","[1,100)"}
+(1 row)
+
+-- error: cannot set most_common_elems for range type
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'arange'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_vals => '{"[2,3)","[1,2)","[3,4)"}'::text,
+ most_common_freqs => '{0.3,0.25,0.05}'::real[],
+ histogram_bounds => '{"[1,2)","[2,3)","[3,4)","[4,5)"}'::text,
+ correlation => 1.1::real,
+ most_common_elems => '{3,1}'::text,
+ most_common_elem_freqs => '{0.3,0.2,0.2,0.3,0.0}'::real[],
+ range_empty_frac => -0.5::real,
+ range_length_histogram => '{399,499,Infinity}'::text,
+ range_bounds_histogram => '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text
+ );
+ERROR: unable to determine element type of attribute "arange"
+DETAIL: Cannot set STATISTIC_KIND_MCELEM or STATISTIC_KIND_DECHIST.
+--
+-- Test the ability to exactly copy data from one table to an identical table,
+-- correctly reconstructing the stakind order as well as the staopN and
+-- stacollN values. Because oids are not stable across databases, we can only
+-- test this when the source and destination are on the same database
+-- instance. For that reason, we borrow and adapt a query found in fe_utils
+-- and used by pg_dump/pg_upgrade.
+--
+INSERT INTO stats_import.test
+SELECT 1, 'one', (1, 1.1, 'ONE', '2001-01-01', '{ "xkey": "xval" }')::stats_import.complex_type, int4range(1,4), array['red','green']
+UNION ALL
+SELECT 2, 'two', (2, 2.2, 'TWO', '2002-02-02', '[true, 4, "six"]')::stats_import.complex_type, int4range(1,4), array['blue','yellow']
+UNION ALL
+SELECT 3, 'tre', (3, 3.3, 'TRE', '2003-03-03', NULL)::stats_import.complex_type, int4range(-1,1), array['"orange"', 'purple', 'cyan']
+UNION ALL
+SELECT 4, 'four', NULL, int4range(0,100), NULL;
+CREATE INDEX is_odd ON stats_import.test(((comp).a % 2 = 1));
+-- Generate statistics on table with data
+ANALYZE stats_import.test;
+CREATE TABLE stats_import.test_clone ( LIKE stats_import.test )
+ WITH (autovacuum_enabled = false);
+CREATE INDEX is_odd_clone ON stats_import.test_clone(((comp).a % 2 = 1));
+--
+-- Copy stats from test to test_clone, and is_odd to is_odd_clone
+--
+SELECT s.schemaname, s.tablename, s.attname, s.inherited
+FROM pg_catalog.pg_stats AS s
+CROSS JOIN LATERAL
+ pg_catalog.pg_set_attribute_stats(
+ relation => ('stats_import.' || s.tablename || '_clone')::regclass::oid,
+ attname => s.attname,
+ inherited => s.inherited,
+ null_frac => s.null_frac,
+ avg_width => s.avg_width,
+ n_distinct => s.n_distinct,
+ most_common_vals => s.most_common_vals::text,
+ most_common_freqs => s.most_common_freqs,
+ histogram_bounds => s.histogram_bounds::text,
+ correlation => s.correlation,
+ most_common_elems => s.most_common_elems::text,
+ most_common_elem_freqs => s.most_common_elem_freqs,
+ elem_count_histogram => s.elem_count_histogram,
+ range_bounds_histogram => s.range_bounds_histogram::text,
+ range_empty_frac => s.range_empty_frac,
+ range_length_histogram => s.range_length_histogram::text) AS r
+WHERE s.schemaname = 'stats_import'
+AND s.tablename IN ('test', 'is_odd')
+ORDER BY s.tablename, s.attname, s.inherited;
+ schemaname | tablename | attname | inherited
+--------------+-----------+---------+-----------
+ stats_import | is_odd | expr | f
+ stats_import | test | arange | f
+ stats_import | test | comp | f
+ stats_import | test | id | f
+ stats_import | test | name | f
+ stats_import | test | tags | f
+(6 rows)
+
+SELECT c.relname, COUNT(*) AS num_stats
+FROM pg_class AS c
+JOIN pg_statistic s ON s.starelid = c.oid
+WHERE c.relnamespace = 'stats_import'::regnamespace
+AND c.relname IN ('test', 'test_clone', 'is_odd', 'is_odd_clone')
+GROUP BY c.relname
+ORDER BY c.relname;
+ relname | num_stats
+--------------+-----------
+ is_odd | 1
+ is_odd_clone | 1
+ test | 5
+ test_clone | 5
+(4 rows)
+
+-- check test minus test_clone
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'test' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.test'::regclass
+EXCEPT
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'test' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.test_clone'::regclass;
+ attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction
+---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+-----------
+(0 rows)
+
+-- check test_clone minus test
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'test_clone' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.test_clone'::regclass
+EXCEPT
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'test_clone' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.test'::regclass;
+ attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction
+---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+-----------
+(0 rows)
+
+-- check is_odd minus is_odd_clone
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'is_odd' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.is_odd'::regclass
+EXCEPT
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'is_odd' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.is_odd_clone'::regclass;
+ attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction
+---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+-----------
+(0 rows)
+
+-- check is_odd_clone minus is_odd
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'is_odd_clone' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.is_odd_clone'::regclass
+EXCEPT
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'is_odd_clone' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.is_odd'::regclass;
+ attname | stainherit | stanullfrac | stawidth | stadistinct | stakind1 | stakind2 | stakind3 | stakind4 | stakind5 | staop1 | staop2 | staop3 | staop4 | staop5 | stacoll1 | stacoll2 | stacoll3 | stacoll4 | stacoll5 | stanumbers1 | stanumbers2 | stanumbers3 | stanumbers4 | stanumbers5 | sv1 | sv2 | sv3 | sv4 | sv5 | direction
+---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+-----------
+(0 rows)
+
DROP SCHEMA stats_import CASCADE;
-NOTICE: drop cascades to 5 other objects
+NOTICE: drop cascades to 6 other objects
DETAIL: drop cascades to type stats_import.complex_type
drop cascades to table stats_import.test
drop cascades to sequence stats_import.testseq
drop cascades to view stats_import.testview
drop cascades to table stats_import.part_parent
+drop cascades to table stats_import.test_clone
relation => 'stats_import.part_parent'::regclass,
relpages => -1::integer);
+-- error: object doesn't exist
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => '0'::oid,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+
+-- error: relation null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => NULL::oid,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+
+-- error: attname null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => NULL::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+
+-- error: inherited null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => NULL::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+
+-- error: null_frac null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => NULL::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+
+-- error: avg_width null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => NULL::integer,
+ n_distinct => 0.3::real);
+
+-- error: avg_width null
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => NULL::real);
+
+-- ok: no stakinds
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.1::real,
+ avg_width => 2::integer,
+ n_distinct => 0.3::real);
+
+SELECT stanullfrac, stawidth, stadistinct
+FROM pg_statistic
+WHERE starelid = 'stats_import.test'::regclass;
+
+-- error: mcv / mcf null mismatch
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_freqs => '{0.1,0.2,0.3}'::real[]
+ );
+
+-- error: mcv / mcf null mismatch part 2
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_vals => '{1,2,3}'::text
+ );
+
+-- error: mcv / mcf type mismatch
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_vals => '{2023-09-30,2024-10-31,3}'::text,
+ most_common_freqs => '{0.2,0.1}'::real[]
+ );
+
+-- warning: mcv cast failure
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_vals => '{2,four,3}'::text,
+ most_common_freqs => '{0.3,0.25,0.05}'::real[]
+ );
+
+-- ok: mcv+mcf
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_vals => '{2,1,3}'::text,
+ most_common_freqs => '{0.3,0.25,0.05}'::real[]
+ );
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'id';
+
+-- error: histogram elements null value
+-- this generates no warnings, but perhaps it should
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ histogram_bounds => '{1,NULL,3,4}'::text
+ );
+
+-- ok: histogram_bounds
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ histogram_bounds => '{1,2,3,4}'::text
+ );
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'id';
+
+-- ok: correlation
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ correlation => 0.5::real);
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'id';
+
+-- error: scalars can't have mcelem
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_elems => '{1,3}'::text,
+ most_common_elem_freqs => '{0.3,0.2,0.2,0.3,0.0}'::real[]
+ );
+
+-- error: mcelem / mcelem mismatch
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'tags'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_elems => '{one,two}'::text
+ );
+
+-- error: mcelem / mcelem null mismatch part 2
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'tags'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_elem_freqs => '{0.3,0.2,0.2,0.3}'::real[]
+ );
+
+-- ok: mcelem
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'tags'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_elems => '{one,three}'::text,
+ most_common_elem_freqs => '{0.3,0.2,0.2,0.3,0.0}'::real[]
+ );
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'tags';
+
+-- error: scalars can't have elem_count_histogram
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ elem_count_histogram => '{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[]
+ );
+-- error: elem_count_histogram null element
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'tags'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ elem_count_histogram => '{1,1,NULL,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[]
+ );
+-- ok: elem_count_histogram
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'tags'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ elem_count_histogram => '{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}'::real[]
+ );
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'tags';
+
+-- error: scalars can't have range stats
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_empty_frac => 0.5::real,
+ range_length_histogram => '{399,499,Infinity}'::text
+ );
+-- error: range_empty_frac range_length_hist null mismatch
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'arange'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_length_histogram => '{399,499,Infinity}'::text
+ );
+-- error: range_empty_frac range_length_hist null mismatch part 2
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'arange'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_empty_frac => 0.5::real
+ );
+-- ok: range_empty_frac + range_length_hist
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'arange'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_empty_frac => 0.5::real,
+ range_length_histogram => '{399,499,Infinity}'::text
+ );
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'arange';
+
+-- error: scalars can't have range stats
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'id'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_bounds_histogram => '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text
+ );
+-- ok: range_bounds_histogram
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'arange'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ range_bounds_histogram => '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text
+ );
+
+SELECT *
+FROM pg_stats
+WHERE schemaname = 'stats_import'
+AND tablename = 'test'
+AND inherited = false
+AND attname = 'arange';
+
+-- error: cannot set most_common_elems for range type
+SELECT pg_catalog.pg_set_attribute_stats(
+ relation => 'stats_import.test'::regclass,
+ attname => 'arange'::name,
+ inherited => false::boolean,
+ null_frac => 0.5::real,
+ avg_width => 2::integer,
+ n_distinct => -0.1::real,
+ most_common_vals => '{"[2,3)","[1,2)","[3,4)"}'::text,
+ most_common_freqs => '{0.3,0.25,0.05}'::real[],
+ histogram_bounds => '{"[1,2)","[2,3)","[3,4)","[4,5)"}'::text,
+ correlation => 1.1::real,
+ most_common_elems => '{3,1}'::text,
+ most_common_elem_freqs => '{0.3,0.2,0.2,0.3,0.0}'::real[],
+ range_empty_frac => -0.5::real,
+ range_length_histogram => '{399,499,Infinity}'::text,
+ range_bounds_histogram => '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text
+ );
+--
+-- Test the ability to exactly copy data from one table to an identical table,
+-- correctly reconstructing the stakind order as well as the staopN and
+-- stacollN values. Because oids are not stable across databases, we can only
+-- test this when the source and destination are on the same database
+-- instance. For that reason, we borrow and adapt a query found in fe_utils
+-- and used by pg_dump/pg_upgrade.
+--
+INSERT INTO stats_import.test
+SELECT 1, 'one', (1, 1.1, 'ONE', '2001-01-01', '{ "xkey": "xval" }')::stats_import.complex_type, int4range(1,4), array['red','green']
+UNION ALL
+SELECT 2, 'two', (2, 2.2, 'TWO', '2002-02-02', '[true, 4, "six"]')::stats_import.complex_type, int4range(1,4), array['blue','yellow']
+UNION ALL
+SELECT 3, 'tre', (3, 3.3, 'TRE', '2003-03-03', NULL)::stats_import.complex_type, int4range(-1,1), array['"orange"', 'purple', 'cyan']
+UNION ALL
+SELECT 4, 'four', NULL, int4range(0,100), NULL;
+
+CREATE INDEX is_odd ON stats_import.test(((comp).a % 2 = 1));
+
+-- Generate statistics on table with data
+ANALYZE stats_import.test;
+
+CREATE TABLE stats_import.test_clone ( LIKE stats_import.test )
+ WITH (autovacuum_enabled = false);
+
+CREATE INDEX is_odd_clone ON stats_import.test_clone(((comp).a % 2 = 1));
+
+--
+-- Copy stats from test to test_clone, and is_odd to is_odd_clone
+--
+SELECT s.schemaname, s.tablename, s.attname, s.inherited
+FROM pg_catalog.pg_stats AS s
+CROSS JOIN LATERAL
+ pg_catalog.pg_set_attribute_stats(
+ relation => ('stats_import.' || s.tablename || '_clone')::regclass::oid,
+ attname => s.attname,
+ inherited => s.inherited,
+ null_frac => s.null_frac,
+ avg_width => s.avg_width,
+ n_distinct => s.n_distinct,
+ most_common_vals => s.most_common_vals::text,
+ most_common_freqs => s.most_common_freqs,
+ histogram_bounds => s.histogram_bounds::text,
+ correlation => s.correlation,
+ most_common_elems => s.most_common_elems::text,
+ most_common_elem_freqs => s.most_common_elem_freqs,
+ elem_count_histogram => s.elem_count_histogram,
+ range_bounds_histogram => s.range_bounds_histogram::text,
+ range_empty_frac => s.range_empty_frac,
+ range_length_histogram => s.range_length_histogram::text) AS r
+WHERE s.schemaname = 'stats_import'
+AND s.tablename IN ('test', 'is_odd')
+ORDER BY s.tablename, s.attname, s.inherited;
+
+SELECT c.relname, COUNT(*) AS num_stats
+FROM pg_class AS c
+JOIN pg_statistic s ON s.starelid = c.oid
+WHERE c.relnamespace = 'stats_import'::regnamespace
+AND c.relname IN ('test', 'test_clone', 'is_odd', 'is_odd_clone')
+GROUP BY c.relname
+ORDER BY c.relname;
+
+-- check test minus test_clone
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'test' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.test'::regclass
+EXCEPT
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'test' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.test_clone'::regclass;
+
+-- check test_clone minus test
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'test_clone' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.test_clone'::regclass
+EXCEPT
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'test_clone' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.test'::regclass;
+
+-- check is_odd minus is_odd_clone
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'is_odd' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.is_odd'::regclass
+EXCEPT
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'is_odd' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.is_odd_clone'::regclass;
+
+-- check is_odd_clone minus is_odd
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'is_odd_clone' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.is_odd_clone'::regclass
+EXCEPT
+SELECT
+ a.attname, s.stainherit, s.stanullfrac, s.stawidth, s.stadistinct,
+ s.stakind1, s.stakind2, s.stakind3, s.stakind4, s.stakind5,
+ s.staop1, s.staop2, s.staop3, s.staop4, s.staop5,
+ s.stacoll1, s.stacoll2, s.stacoll3, s.stacoll4, s.stacoll5,
+ s.stanumbers1, s.stanumbers2, s.stanumbers3, s.stanumbers4, s.stanumbers5,
+ s.stavalues1::text AS sv1, s.stavalues2::text AS sv2,
+ s.stavalues3::text AS sv3, s.stavalues4::text AS sv4,
+ s.stavalues5::text AS sv5, 'is_odd_clone' AS direction
+FROM pg_statistic s
+JOIN pg_attribute a ON a.attrelid = s.starelid AND a.attnum = s.staattnum
+WHERE s.starelid = 'stats_import.is_odd'::regclass;
+
DROP SCHEMA stats_import CASCADE;
projects / postgresql.git / commitdiff