From f3087b04784d6853970bf41eb619281d72ce94bd Mon Sep 17 00:00:00 2001 From: Corey Huinker Date: Wed, 26 Feb 2025 21:02:44 -0500 Subject: [PATCH vTestReorg] Organize and deduplicate statistics import tests. Many changes, refactorings, and rebasings have taken their toll on the statistics import tests. Now that things appear more stable and the pg_set_* functions are gone in favor of using pg_restore_* in all cases, it's safe to remove duplicates, combine tests where possible, and make the test descriptions a bit more descriptive and uniform. --- src/test/regress/expected/stats_import.out | 672 +++++++++------------ src/test/regress/sql/stats_import.sql | 546 +++++++---------- 2 files changed, 500 insertions(+), 718 deletions(-) diff --git a/src/test/regress/expected/stats_import.out b/src/test/regress/expected/stats_import.out index 1f150f7b08d..eaa3fe0f812 100644 --- a/src/test/regress/expected/stats_import.out +++ b/src/test/regress/expected/stats_import.out @@ -13,17 +13,58 @@ CREATE TABLE stats_import.test( tags text[] ) WITH (autovacuum_enabled = false); CREATE INDEX test_i ON stats_import.test(id); +-- +-- relstats tests +-- +--- error: relation is wrong type +SELECT pg_catalog.pg_restore_relation_stats( + 'relation', 0::oid, + 'relpages', 17::integer, + 'reltuples', 400.0::real, + 'relallvisible', 4::integer); +WARNING: argument "relation" has type "oid", expected type "regclass" +ERROR: "relation" cannot be NULL +-- error: relation not found +SELECT pg_catalog.pg_restore_relation_stats( + 'relation', 0::oid::regclass, + 'relpages', 17::integer, + 'reltuples', 400.0::real, + 'relallvisible', 4::integer); +ERROR: could not open relation with OID 0 +-- error: odd number of variadic arguments cannot be pairs +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relpages', '17'::integer, + 'reltuples', 400::real, + 'relallvisible'); +ERROR: variadic arguments must be name/value pairs +HINT: Provide an even number of variadic arguments that can be divided into pairs. +-- error: argument name is NULL +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + NULL, '17'::integer, + 'relallvisible', 14::integer); +ERROR: name at variadic position 5 is NULL +-- error: argument name is not a text type +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + 17, '17'::integer, + 'relallvisible', 44::integer); +ERROR: name at variadic position 5 has type "integer", expected type "text" -- starting stats SELECT relpages, reltuples, relallvisible FROM pg_class -WHERE oid = 'stats_import.test'::regclass; +WHERE oid = 'stats_import.test_i'::regclass; relpages | reltuples | relallvisible ----------+-----------+--------------- - 0 | -1 | 0 + 1 | 0 | 0 (1 row) -BEGIN; -- regular indexes have special case locking rules +BEGIN; SELECT pg_catalog.pg_restore_relation_stats( 'relation', 'stats_import.test_i'::regclass, @@ -50,32 +91,6 @@ WHERE relation = 'stats_import.test_i'::regclass AND (1 row) COMMIT; -SELECT - pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.test_i'::regclass, - 'relpages', 19::integer ); - pg_restore_relation_stats ---------------------------- - t -(1 row) - --- clear -SELECT - pg_catalog.pg_clear_relation_stats( - 'stats_import.test'::regclass); - pg_clear_relation_stats -------------------------- - -(1 row) - -SELECT relpages, reltuples, relallvisible -FROM pg_class -WHERE oid = 'stats_import.test'::regclass; - relpages | reltuples | relallvisible -----------+-----------+--------------- - 0 | -1 | 0 -(1 row) - -- relpages may be -1 for partitioned tables CREATE TABLE stats_import.part_parent ( i integer ) PARTITION BY RANGE(i); CREATE TABLE stats_import.part_child_1 @@ -92,26 +107,6 @@ WHERE oid = 'stats_import.part_parent'::regclass; -1 (1 row) --- although partitioned tables have no storage, setting relpages to a --- positive value is still allowed -SELECT - pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.part_parent_i'::regclass, - 'relpages', 2::integer); - pg_restore_relation_stats ---------------------------- - t -(1 row) - -SELECT - pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.part_parent'::regclass, - 'relpages', 2::integer); - pg_restore_relation_stats ---------------------------- - t -(1 row) - -- -- Partitioned indexes aren't analyzed but it is possible to set -- stats. The locking rules are different from normal indexes due to @@ -145,30 +140,19 @@ WHERE relation = 'stats_import.part_parent_i'::regclass AND (1 row) COMMIT; -SELECT - pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.part_parent_i'::regclass, - 'relpages', 2::integer); - pg_restore_relation_stats ---------------------------- - t +SELECT relpages +FROM pg_class +WHERE oid = 'stats_import.part_parent_i'::regclass; + relpages +---------- + 2 (1 row) --- nothing stops us from setting it to -1 -SELECT - pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.part_parent'::regclass, - 'relpages', -1::integer); - pg_restore_relation_stats ---------------------------- - t -(1 row) - --- ok: set all stats +-- ok: set all stats, no bounds checking SELECT pg_restore_relation_stats( 'relation', 'stats_import.test'::regclass, 'version', 150000::integer, - 'relpages', '17'::integer, + 'relpages', '-17'::integer, 'reltuples', 400::real, 'relallvisible', 4::integer); pg_restore_relation_stats @@ -181,10 +165,10 @@ FROM pg_class WHERE oid = 'stats_import.test'::regclass; relpages | reltuples | relallvisible ----------+-----------+--------------- - 17 | 400 | 4 + -17 | 400 | 4 (1 row) --- ok: just relpages +-- ok: set just relpages, rest stay same SELECT pg_restore_relation_stats( 'relation', 'stats_import.test'::regclass, 'version', 150000::integer, @@ -202,7 +186,7 @@ WHERE oid = 'stats_import.test'::regclass; 16 | 400 | 4 (1 row) --- ok: just reltuples +-- ok: set just reltuples, rest stay same SELECT pg_restore_relation_stats( 'relation', 'stats_import.test'::regclass, 'version', 150000::integer, @@ -220,7 +204,7 @@ WHERE oid = 'stats_import.test'::regclass; 16 | 500 | 4 (1 row) --- ok: just relallvisible +-- ok: set just relallvisible, rest stay same SELECT pg_restore_relation_stats( 'relation', 'stats_import.test'::regclass, 'version', 150000::integer, @@ -238,7 +222,7 @@ WHERE oid = 'stats_import.test'::regclass; 16 | 500 | 5 (1 row) --- warn: bad relpages type +-- warn: bad relpages type, rest updated SELECT pg_restore_relation_stats( 'relation', 'stats_import.test'::regclass, 'version', 150000::integer, @@ -259,20 +243,136 @@ WHERE oid = 'stats_import.test'::regclass; 16 | 400 | 4 (1 row) +-- unrecognized argument name, rest ok +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relpages', '171'::integer, + 'nope', 10::integer); +WARNING: unrecognized argument name: "nope" + pg_restore_relation_stats +--------------------------- + f +(1 row) + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + relpages | reltuples | relallvisible +----------+-----------+--------------- + 171 | 400 | 4 +(1 row) + +-- ok: clear stats +SELECT pg_catalog.pg_clear_relation_stats( + relation => 'stats_import.test'::regclass); + pg_clear_relation_stats +------------------------- + +(1 row) + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + relpages | reltuples | relallvisible +----------+-----------+--------------- + 0 | -1 | 0 +(1 row) + -- invalid relkinds for statistics CREATE SEQUENCE stats_import.testseq; -CREATE VIEW stats_import.testview AS SELECT * FROM stats_import.test; -SELECT - pg_catalog.pg_clear_relation_stats( +SELECT pg_catalog.pg_restore_relation_stats( + 'relation', 'stats_import.testseq'::regclass); +ERROR: cannot modify statistics for relation "testseq" +DETAIL: This operation is not supported for sequences. +SELECT pg_catalog.pg_clear_relation_stats( 'stats_import.testseq'::regclass); ERROR: cannot modify statistics for relation "testseq" DETAIL: This operation is not supported for sequences. -SELECT - pg_catalog.pg_clear_relation_stats( +CREATE VIEW stats_import.testview AS SELECT * FROM stats_import.test; +SELECT pg_catalog.pg_restore_relation_stats( + 'relation', 'stats_import.testview'::regclass); +ERROR: cannot modify statistics for relation "testview" +DETAIL: This operation is not supported for views. +SELECT pg_catalog.pg_clear_relation_stats( 'stats_import.testview'::regclass); ERROR: cannot modify statistics for relation "testview" DETAIL: This operation is not supported for views. --- ok: no stakinds +-- +-- attribute stats +-- +-- error: object does not exist +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', '0'::oid::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); +ERROR: could not open relation with OID 0 +-- error: relation null +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', NULL::oid::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); +ERROR: "relation" cannot be NULL +-- error: NULL attname +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', NULL::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); +ERROR: must specify either attname or attnum +-- error: attname doesn't exist +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'nope'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); +ERROR: column "nope" of relation "test" does not exist +-- error: both attname and attnum +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'attnum', 1::smallint, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); +ERROR: cannot specify both attname and attnum +-- error: neither attname nor attnum +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); +ERROR: must specify either attname or attnum +-- error: attribute is system column +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'xmin'::name, + 'inherited', false::boolean, + 'null_frac', 0.1::real); +ERROR: cannot modify statistics on system column "xmin" +-- error: inherited null +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', NULL::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); +ERROR: "inherited" cannot be NULL +-- error: attribute is system column +SELECT pg_catalog.pg_clear_attribute_stats( + relation => 'stats_import.test'::regclass, + attname => 'ctid'::name, + inherited => false::boolean); +ERROR: cannot clear statistics on system column "ctid" +-- ok: just the fixed values, no stakinds SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, @@ -297,15 +397,17 @@ AND attname = 'id'; stats_import | test | id | f | 0.2 | 5 | 0.6 | | | | | | | | | | (1 row) --- ok: restore by attnum +-- +-- ok: restore by attnum, we normally reserve this for +-- indexes, but there is no reason it shouldn't work +-- for any stat-having relation. +-- SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attnum', 1::smallint, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.4::real, - 'avg_width', 5::integer, - 'n_distinct', 0.6::real); + 'null_frac', 0.4::real); pg_restore_attribute_stats ---------------------------- t @@ -322,14 +424,13 @@ AND attname = 'id'; stats_import | test | id | f | 0.4 | 5 | 0.6 | | | | | | | | | | (1 row) --- warn: unrecognized argument name +-- warn: unrecognized argument name, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, 'null_frac', 0.2::real, - 'avg_width', NULL::integer, 'nope', 0.5::real); WARNING: unrecognized argument name: "nope" pg_restore_attribute_stats @@ -348,15 +449,13 @@ AND attname = 'id'; stats_import | test | id | f | 0.2 | 5 | 0.6 | | | | | | | | | | (1 row) --- warn: mcv / mcf null mismatch part 1 +-- warn: mcv / mcf null mismatch part 1, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.6::real, - 'avg_width', 7::integer, - 'n_distinct', -0.7::real, + 'null_frac', 0.21::real, 'most_common_freqs', '{0.1,0.2,0.3}'::real[] ); WARNING: "most_common_vals" must be specified when "most_common_freqs" is specified @@ -373,18 +472,16 @@ 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 | 0.6 | 7 | -0.7 | | | | | | | | | | + stats_import | test | id | f | 0.21 | 5 | 0.6 | | | | | | | | | | (1 row) --- warn: mcv / mcf null mismatch part 2 +-- warn: mcv / mcf null mismatch part 2, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.7::real, - 'avg_width', 8::integer, - 'n_distinct', -0.8::real, + 'null_frac', 0.21::real, 'most_common_vals', '{1,2,3}'::text ); WARNING: "most_common_freqs" must be specified when "most_common_vals" is specified @@ -401,18 +498,16 @@ 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 | 0.7 | 8 | -0.8 | | | | | | | | | | + stats_import | test | id | f | 0.21 | 5 | 0.6 | | | | | | | | | | (1 row) --- warn: mcv / mcf type mismatch +-- warn: mcf type mismatch, mcv-pair fails, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.8::real, - 'avg_width', 9::integer, - 'n_distinct', -0.9::real, + 'null_frac', 0.22::real, 'most_common_vals', '{2,1,3}'::text, 'most_common_freqs', '{0.2,0.1}'::double precision[] ); @@ -431,18 +526,16 @@ 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 | 0.8 | 9 | -0.9 | | | | | | | | | | + stats_import | test | id | f | 0.22 | 5 | 0.6 | | | | | | | | | | (1 row) --- warn: mcv cast failure +-- warn: mcv cast failure, mcv-pair fails, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.9::real, - 'avg_width', 10::integer, - 'n_distinct', -0.4::real, + 'null_frac', 0.23::real, 'most_common_vals', '{2,four,3}'::text, 'most_common_freqs', '{0.3,0.25,0.05}'::real[] ); @@ -460,7 +553,7 @@ 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 | 0.9 | 10 | -0.4 | | | | | | | | | | + stats_import | test | id | f | 0.23 | 5 | 0.6 | | | | | | | | | | (1 row) -- ok: mcv+mcf @@ -469,9 +562,6 @@ SELECT pg_catalog.pg_restore_attribute_stats( 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 1::integer, - 'n_distinct', -0.1::real, 'most_common_vals', '{2,1,3}'::text, 'most_common_freqs', '{0.3,0.25,0.05}'::real[] ); @@ -488,18 +578,16 @@ 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 | 0.1 | 1 | -0.1 | {2,1,3} | {0.3,0.25,0.05} | | | | | | | | + stats_import | test | id | f | 0.23 | 5 | 0.6 | {2,1,3} | {0.3,0.25,0.05} | | | | | | | | (1 row) --- warn: NULL in histogram array +-- warn: NULL in histogram array, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.2::real, - 'avg_width', 2::integer, - 'n_distinct', -0.2::real, + 'null_frac', 0.24::real, 'histogram_bounds', '{1,NULL,3,4}'::text ); WARNING: "histogram_bounds" array cannot contain NULL values @@ -516,7 +604,7 @@ 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 | 0.2 | 2 | -0.2 | {2,1,3} | {0.3,0.25,0.05} | | | | | | | | + stats_import | test | id | f | 0.24 | 5 | 0.6 | {2,1,3} | {0.3,0.25,0.05} | | | | | | | | (1 row) -- ok: histogram_bounds @@ -525,10 +613,8 @@ SELECT pg_catalog.pg_restore_attribute_stats( 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.3::real, - 'avg_width', 3::integer, - 'n_distinct', -0.3::real, - 'histogram_bounds', '{1,2,3,4}'::text ); + 'histogram_bounds', '{1,2,3,4}'::text + ); pg_restore_attribute_stats ---------------------------- t @@ -542,19 +628,17 @@ 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 | 0.3 | 3 | -0.3 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | | + stats_import | test | id | f | 0.24 | 5 | 0.6 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | | (1 row) --- warn: elem_count_histogram null element +-- warn: elem_count_histogram null element, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'tags'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.4::real, - 'avg_width', 5::integer, - 'n_distinct', -0.4::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[] + 'null_frac', 0.25::real, + 'elem_count_histogram', '{1,1,NULL,1,1,1,1,1}'::real[] ); WARNING: "elem_count_histogram" array cannot contain NULL values pg_restore_attribute_stats @@ -570,7 +654,7 @@ 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 | 0.4 | 5 | -0.4 | | | | | | | | | | + stats_import | test | tags | f | 0.25 | 0 | 0 | | | | | | | | | | (1 row) -- ok: elem_count_histogram @@ -579,9 +663,7 @@ SELECT pg_catalog.pg_restore_attribute_stats( 'attname', 'tags'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.5::real, - 'avg_width', 6::integer, - 'n_distinct', -0.55::real, + 'null_frac', 0.26::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_restore_attribute_stats @@ -597,18 +679,16 @@ 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 | 6 | -0.55 | | | | | | | {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1} | | | + stats_import | test | tags | f | 0.26 | 0 | 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) --- range stats on a scalar type +-- warn: range stats on a scalar type, rest ok SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.6::real, - 'avg_width', 7::integer, - 'n_distinct', -0.15::real, + 'null_frac', 0.27::real, 'range_empty_frac', 0.5::real, 'range_length_histogram', '{399,499,Infinity}'::text ); @@ -627,18 +707,16 @@ 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 | 0.6 | 7 | -0.15 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | | + stats_import | test | id | f | 0.27 | 5 | 0.6 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | | (1 row) --- warn: range_empty_frac range_length_hist null mismatch +-- warn: range_empty_frac range_length_hist null mismatch, rest ok SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'arange'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.7::real, - 'avg_width', 8::integer, - 'n_distinct', -0.25::real, + 'null_frac', 0.28::real, 'range_length_histogram', '{399,499,Infinity}'::text ); WARNING: "range_empty_frac" must be specified when "range_length_histogram" is specified @@ -655,18 +733,16 @@ 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 | 0.7 | 8 | -0.25 | | | | | | | | | | + stats_import | test | arange | f | 0.28 | 0 | 0 | | | | | | | | | | (1 row) --- warn: range_empty_frac range_length_hist null mismatch part 2 +-- warn: range_empty_frac range_length_hist null mismatch part 2, rest ok SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'arange'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.8::real, - 'avg_width', 9::integer, - 'n_distinct', -0.35::real, + 'null_frac', 0.29::real, 'range_empty_frac', 0.5::real ); WARNING: "range_length_histogram" must be specified when "range_empty_frac" is specified @@ -683,7 +759,7 @@ 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 | 0.8 | 9 | -0.35 | | | | | | | | | | + stats_import | test | arange | f | 0.29 | 0 | 0 | | | | | | | | | | (1 row) -- ok: range_empty_frac + range_length_hist @@ -692,9 +768,6 @@ SELECT pg_catalog.pg_restore_attribute_stats( 'attname', 'arange'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.9::real, - 'avg_width', 1::integer, - 'n_distinct', -0.19::real, 'range_empty_frac', 0.5::real, 'range_length_histogram', '{399,499,Infinity}'::text ); @@ -711,18 +784,16 @@ 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 | 0.9 | 1 | -0.19 | | | | | | | | {399,499,Infinity} | 0.5 | + stats_import | test | arange | f | 0.29 | 0 | 0 | | | | | | | | {399,499,Infinity} | 0.5 | (1 row) --- warn: range bounds histogram on scalar +-- warn: range bounds histogram on scalar, rest ok SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', -0.29::real, + 'null_frac', 0.31::real, 'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text ); WARNING: attribute "id" is not a range type @@ -740,7 +811,7 @@ 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 | 0.1 | 2 | -0.29 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | | + stats_import | test | id | f | 0.31 | 5 | 0.6 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | | (1 row) -- ok: range_bounds_histogram @@ -749,9 +820,6 @@ SELECT pg_catalog.pg_restore_attribute_stats( 'attname', 'arange'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.2::real, - 'avg_width', 3::integer, - 'n_distinct', -0.39::real, 'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text ); pg_restore_attribute_stats @@ -767,26 +835,17 @@ 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 | 0.2 | 3 | -0.39 | | | | | | | | {399,499,Infinity} | 0.5 | {"[-1,1)","[0,4)","[1,4)","[1,100)"} + stats_import | test | arange | f | 0.29 | 0 | 0 | | | | | | | | {399,499,Infinity} | 0.5 | {"[-1,1)","[0,4)","[1,4)","[1,100)"} (1 row) --- warn: cannot set most_common_elems for range type +-- warn: cannot set most_common_elems for range type, rest ok SELECT pg_catalog.pg_restore_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, + 'null_frac', 0.32::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 + 'most_common_elem_freqs', '{0.3,0.2,0.2,0.3,0.0}'::real[] ); WARNING: unable to determine element type of attribute "arange" DETAIL: Cannot set STATISTIC_KIND_MCELEM or STATISTIC_KIND_DECHIST. @@ -801,19 +860,17 @@ 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 | {"[2,3)","[1,2)","[3,4)"} | {0.3,0.25,0.05} | {"[1,2)","[2,3)","[3,4)","[4,5)"} | 1.1 | | | | {399,499,Infinity} | -0.5 | {"[-1,1)","[0,4)","[1,4)","[1,100)"} + 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 | 0.32 | 0 | 0 | | | | | | | | {399,499,Infinity} | 0.5 | {"[-1,1)","[0,4)","[1,4)","[1,100)"} (1 row) --- warn: scalars can't have mcelem +-- warn: scalars can't have mcelem, rest ok SELECT pg_catalog.pg_restore_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, + 'null_frac', 0.33::real, 'most_common_elems', '{1,3}'::text, 'most_common_elem_freqs', '{0.3,0.2,0.2,0.3,0.0}'::real[] ); @@ -832,17 +889,15 @@ 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} | | | | | | | + stats_import | test | id | f | 0.33 | 5 | 0.6 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | | (1 row) --- warn: mcelem / mcelem mismatch +-- warn: mcelem / mcelem mismatch, rest ok SELECT pg_catalog.pg_restore_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, + 'null_frac', 0.34::real, 'most_common_elems', '{one,two}'::text ); WARNING: "most_common_elem_freqs" must be specified when "most_common_elems" is specified @@ -859,17 +914,15 @@ 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 | | | | | | | {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1} | | | + stats_import | test | tags | f | 0.34 | 0 | 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) --- warn: mcelem / mcelem null mismatch part 2 +-- warn: mcelem / mcelem null mismatch part 2, rest ok SELECT pg_catalog.pg_restore_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, + 'null_frac', 0.35::real, 'most_common_elem_freqs', '{0.3,0.2,0.2,0.3}'::real[] ); WARNING: "most_common_elems" must be specified when "most_common_elem_freqs" is specified @@ -878,14 +931,22 @@ WARNING: "most_common_elems" must be specified when "most_common_elem_freqs" is f (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 | 0.35 | 0 | 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) + -- ok: mcelem SELECT pg_catalog.pg_restore_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[] ); @@ -902,18 +963,16 @@ 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} | | | + stats_import | test | tags | f | 0.35 | 0 | 0 | | | | | {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) --- warn: scalars can't have elem_count_histogram +-- warn: scalars can't have elem_count_histogram, rest ok SELECT pg_catalog.pg_restore_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[] + 'null_frac', 0.36::real, + 'elem_count_histogram', '{1,1,1,1,1,1,1,1,1,1}'::real[] ); WARNING: unable to determine element type of attribute "id" DETAIL: Cannot set STATISTIC_KIND_MCELEM or STATISTIC_KIND_DECHIST. @@ -930,43 +989,7 @@ 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) - --- warn: too many stat kinds -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', 'arange'::name, - 'inherited', false::boolean, - 'version', 150000::integer, - 'null_frac', 0.5::real, - 'avg_width', 2::integer, - 'n_distinct', -0.1::real, - 'most_common_vals', '{"[2,3)","[1,3)","[3,9)"}'::text, - 'most_common_freqs', '{0.3,0.25,0.05}'::real[], - 'histogram_bounds', '{"[1,2)","[2,3)","[3,4)","[4,)"}'::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); -WARNING: unable to determine element type of attribute "arange" -DETAIL: Cannot set STATISTIC_KIND_MCELEM or STATISTIC_KIND_DECHIST. - pg_restore_attribute_stats ----------------------------- - f -(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 | {"[2,3)","[1,3)","[3,9)"} | {0.3,0.25,0.05} | {"[1,2)","[2,3)","[3,4)","[4,)"} | 1.1 | | | | {399,499,Infinity} | -0.5 | {"[-1,1)","[0,4)","[1,4)","[1,100)"} + stats_import | test | id | f | 0.36 | 5 | 0.6 | {2,1,3} | {0.3,0.25,0.05} | {1,2,3,4} | | | | | | | (1 row) -- @@ -986,19 +1009,6 @@ SELECT 3, 'tre', (3, 3.3, 'TRE', '2003-03-03', NULL)::stats_import.complex_type, UNION ALL SELECT 4, 'four', NULL, int4range(0,100), NULL; CREATE INDEX is_odd ON stats_import.test(((comp).a % 2 = 1)); --- restoring stats on index -SELECT * FROM pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.is_odd'::regclass, - 'version', '180000'::integer, - 'relpages', '11'::integer, - 'reltuples', '10000'::real, - 'relallvisible', '0'::integer -); - pg_restore_relation_stats ---------------------------- - t -(1 row) - -- Generate statistics on table with data ANALYZE stats_import.test; CREATE TABLE stats_import.test_clone ( LIKE stats_import.test ) @@ -1176,7 +1186,18 @@ WHERE s.starelid = 'stats_import.is_odd'::regclass; ---------+------------+-------------+----------+-------------+----------+----------+----------+----------+----------+--------+--------+--------+--------+--------+----------+----------+----------+----------+----------+-------------+-------------+-------------+-------------+-------------+-----+-----+-----+-----+-----+----------- (0 rows) --- ok +-- attribute stats exist before a clear, but not after +SELECT COUNT(*) +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; + count +------- + 1 +(1 row) + SELECT pg_catalog.pg_clear_attribute_stats( relation => 'stats_import.test'::regclass, attname => 'arange'::name, @@ -1186,154 +1207,17 @@ SELECT pg_catalog.pg_clear_attribute_stats( (1 row) --- --- Negative tests --- ---- error: relation is wrong type -SELECT pg_catalog.pg_restore_relation_stats( - 'relation', 0::oid, - 'relpages', 17::integer, - 'reltuples', 400.0::real, - 'relallvisible', 4::integer); -WARNING: argument "relation" has type "oid", expected type "regclass" -ERROR: "relation" cannot be NULL ---- error: relation not found -SELECT pg_catalog.pg_restore_relation_stats( - 'relation', 0::regclass, - 'relpages', 17::integer, - 'reltuples', 400.0::real, - 'relallvisible', 4::integer); -ERROR: could not open relation with OID 0 --- warn and error: unrecognized argument name -SELECT pg_restore_relation_stats( - 'relation', '0'::oid::regclass, - 'version', 150000::integer, - 'relpages', '17'::integer, - 'reltuples', 400::real, - 'nope', 4::integer); -WARNING: unrecognized argument name: "nope" -ERROR: could not open relation with OID 0 --- error: argument name is NULL -SELECT pg_restore_relation_stats( - 'relation', '0'::oid::regclass, - 'version', 150000::integer, - NULL, '17'::integer, - 'reltuples', 400::real, - 'relallvisible', 4::integer); -ERROR: name at variadic position 5 is NULL --- error: argument name is an integer -SELECT pg_restore_relation_stats( - 'relation', '0'::oid::regclass, - 'version', 150000::integer, - 17, '17'::integer, - 'reltuples', 400::real, - 'relallvisible', 4::integer); -ERROR: name at variadic position 5 has type "integer", expected type "text" --- error: odd number of variadic arguments cannot be pairs -SELECT pg_restore_relation_stats( - 'relation', '0'::oid::regclass, - 'version', 150000::integer, - 'relpages', '17'::integer, - 'reltuples', 400::real, - 'relallvisible'); -ERROR: variadic arguments must be name/value pairs -HINT: Provide an even number of variadic arguments that can be divided into pairs. --- error: object doesn't exist -SELECT pg_restore_relation_stats( - 'relation', '0'::oid::regclass, - 'version', 150000::integer, - 'relpages', '17'::integer, - 'reltuples', 400::real, - 'relallvisible', 4::integer); -ERROR: could not open relation with OID 0 --- error: object does not exist -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', '0'::oid::regclass, - 'attname', 'id'::name, - 'inherited', false::boolean, - 'version', 150000::integer, - '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_restore_attribute_stats( - 'relation', NULL::oid, - 'attname', 'id'::name, - 'inherited', false::boolean, - 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); -ERROR: "relation" cannot be NULL --- error: missing attname -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', NULL::name, - 'inherited', false::boolean, - 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); -ERROR: must specify either attname or attnum --- error: both attname and attnum -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', 'id'::name, - 'attnum', 1::smallint, - 'inherited', false::boolean, - 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); -ERROR: cannot specify both attname and attnum --- error: attname doesn't exist -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', 'nope'::name, - 'inherited', false::boolean, - 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); -ERROR: column "nope" of relation "test" does not exist --- error: attribute is system column -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', 'xmin'::name, - 'inherited', false::boolean, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); -ERROR: cannot modify statistics on system column "xmin" --- error: inherited null -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', 'id'::name, - 'inherited', NULL::boolean, - 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); -ERROR: "inherited" cannot be NULL --- error: relation not found -SELECT pg_catalog.pg_clear_relation_stats( - relation => 'stats_import.nope'::regclass); -ERROR: relation "stats_import.nope" does not exist -LINE 2: relation => 'stats_import.nope'::regclass); - ^ --- error: attribute is system column -SELECT pg_catalog.pg_clear_attribute_stats( - relation => 'stats_import.test'::regclass, - attname => 'ctid'::name, - inherited => false::boolean); -ERROR: cannot clear statistics on system column "ctid" --- error: attname doesn't exist -SELECT pg_catalog.pg_clear_attribute_stats( - relation => 'stats_import.test'::regclass, - attname => 'nope'::name, - inherited => false::boolean); -ERROR: column "nope" of relation "test" does not exist +SELECT COUNT(*) +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; + count +------- + 0 +(1 row) + DROP SCHEMA stats_import CASCADE; NOTICE: drop cascades to 6 other objects DETAIL: drop cascades to type stats_import.complex_type diff --git a/src/test/regress/sql/stats_import.sql b/src/test/regress/sql/stats_import.sql index 8c183bceb8a..69e6cc960de 100644 --- a/src/test/regress/sql/stats_import.sql +++ b/src/test/regress/sql/stats_import.sql @@ -17,13 +17,53 @@ CREATE TABLE stats_import.test( CREATE INDEX test_i ON stats_import.test(id); +-- +-- relstats tests +-- + +--- error: relation is wrong type +SELECT pg_catalog.pg_restore_relation_stats( + 'relation', 0::oid, + 'relpages', 17::integer, + 'reltuples', 400.0::real, + 'relallvisible', 4::integer); + +-- error: relation not found +SELECT pg_catalog.pg_restore_relation_stats( + 'relation', 0::oid::regclass, + 'relpages', 17::integer, + 'reltuples', 400.0::real, + 'relallvisible', 4::integer); + +-- error: odd number of variadic arguments cannot be pairs +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relpages', '17'::integer, + 'reltuples', 400::real, + 'relallvisible'); + +-- error: argument name is NULL +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + NULL, '17'::integer, + 'relallvisible', 14::integer); + +-- error: argument name is not a text type +SELECT pg_restore_relation_stats( + 'relation', '0'::oid::regclass, + 'version', 150000::integer, + 17, '17'::integer, + 'relallvisible', 44::integer); + -- starting stats SELECT relpages, reltuples, relallvisible FROM pg_class -WHERE oid = 'stats_import.test'::regclass; +WHERE oid = 'stats_import.test_i'::regclass; -BEGIN; -- regular indexes have special case locking rules +BEGIN; SELECT pg_catalog.pg_restore_relation_stats( 'relation', 'stats_import.test_i'::regclass, @@ -39,20 +79,6 @@ WHERE relation = 'stats_import.test_i'::regclass AND COMMIT; -SELECT - pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.test_i'::regclass, - 'relpages', 19::integer ); - --- clear -SELECT - pg_catalog.pg_clear_relation_stats( - 'stats_import.test'::regclass); - -SELECT relpages, reltuples, relallvisible -FROM pg_class -WHERE oid = 'stats_import.test'::regclass; - -- relpages may be -1 for partitioned tables CREATE TABLE stats_import.part_parent ( i integer ) PARTITION BY RANGE(i); CREATE TABLE stats_import.part_child_1 @@ -68,18 +94,6 @@ SELECT relpages FROM pg_class WHERE oid = 'stats_import.part_parent'::regclass; --- although partitioned tables have no storage, setting relpages to a --- positive value is still allowed -SELECT - pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.part_parent_i'::regclass, - 'relpages', 2::integer); - -SELECT - pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.part_parent'::regclass, - 'relpages', 2::integer); - -- -- Partitioned indexes aren't analyzed but it is possible to set -- stats. The locking rules are different from normal indexes due to @@ -103,22 +117,15 @@ WHERE relation = 'stats_import.part_parent_i'::regclass AND COMMIT; -SELECT - pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.part_parent_i'::regclass, - 'relpages', 2::integer); +SELECT relpages +FROM pg_class +WHERE oid = 'stats_import.part_parent_i'::regclass; --- nothing stops us from setting it to -1 -SELECT - pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.part_parent'::regclass, - 'relpages', -1::integer); - --- ok: set all stats +-- ok: set all stats, no bounds checking SELECT pg_restore_relation_stats( 'relation', 'stats_import.test'::regclass, 'version', 150000::integer, - 'relpages', '17'::integer, + 'relpages', '-17'::integer, 'reltuples', 400::real, 'relallvisible', 4::integer); @@ -126,7 +133,7 @@ SELECT relpages, reltuples, relallvisible FROM pg_class WHERE oid = 'stats_import.test'::regclass; --- ok: just relpages +-- ok: set just relpages, rest stay same SELECT pg_restore_relation_stats( 'relation', 'stats_import.test'::regclass, 'version', 150000::integer, @@ -136,7 +143,7 @@ SELECT relpages, reltuples, relallvisible FROM pg_class WHERE oid = 'stats_import.test'::regclass; --- ok: just reltuples +-- ok: set just reltuples, rest stay same SELECT pg_restore_relation_stats( 'relation', 'stats_import.test'::regclass, 'version', 150000::integer, @@ -146,7 +153,7 @@ SELECT relpages, reltuples, relallvisible FROM pg_class WHERE oid = 'stats_import.test'::regclass; --- ok: just relallvisible +-- ok: set just relallvisible, rest stay same SELECT pg_restore_relation_stats( 'relation', 'stats_import.test'::regclass, 'version', 150000::integer, @@ -156,7 +163,7 @@ SELECT relpages, reltuples, relallvisible FROM pg_class WHERE oid = 'stats_import.test'::regclass; --- warn: bad relpages type +-- warn: bad relpages type, rest updated SELECT pg_restore_relation_stats( 'relation', 'stats_import.test'::regclass, 'version', 150000::integer, @@ -168,17 +175,118 @@ SELECT relpages, reltuples, relallvisible FROM pg_class WHERE oid = 'stats_import.test'::regclass; +-- unrecognized argument name, rest ok +SELECT pg_restore_relation_stats( + 'relation', 'stats_import.test'::regclass, + 'version', 150000::integer, + 'relpages', '171'::integer, + 'nope', 10::integer); + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + +-- ok: clear stats +SELECT pg_catalog.pg_clear_relation_stats( + relation => 'stats_import.test'::regclass); + +SELECT relpages, reltuples, relallvisible +FROM pg_class +WHERE oid = 'stats_import.test'::regclass; + -- invalid relkinds for statistics CREATE SEQUENCE stats_import.testseq; -CREATE VIEW stats_import.testview AS SELECT * FROM stats_import.test; -SELECT - pg_catalog.pg_clear_relation_stats( + +SELECT pg_catalog.pg_restore_relation_stats( + 'relation', 'stats_import.testseq'::regclass); + +SELECT pg_catalog.pg_clear_relation_stats( 'stats_import.testseq'::regclass); -SELECT - pg_catalog.pg_clear_relation_stats( + +CREATE VIEW stats_import.testview AS SELECT * FROM stats_import.test; + +SELECT pg_catalog.pg_restore_relation_stats( + 'relation', 'stats_import.testview'::regclass); + +SELECT pg_catalog.pg_clear_relation_stats( 'stats_import.testview'::regclass); --- ok: no stakinds +-- +-- attribute stats +-- + +-- error: object does not exist +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', '0'::oid::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); + +-- error: relation null +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', NULL::oid::regclass, + 'attname', 'id'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); + +-- error: NULL attname +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', NULL::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); + +-- error: attname doesn't exist +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'nope'::name, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real, + 'avg_width', 2::integer, + 'n_distinct', 0.3::real); + +-- error: both attname and attnum +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'attnum', 1::smallint, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); + +-- error: neither attname nor attnum +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'inherited', false::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); + +-- error: attribute is system column +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'xmin'::name, + 'inherited', false::boolean, + 'null_frac', 0.1::real); + +-- error: inherited null +SELECT pg_catalog.pg_restore_attribute_stats( + 'relation', 'stats_import.test'::regclass, + 'attname', 'id'::name, + 'inherited', NULL::boolean, + 'version', 150000::integer, + 'null_frac', 0.1::real); + +-- error: attribute is system column +SELECT pg_catalog.pg_clear_attribute_stats( + relation => 'stats_import.test'::regclass, + attname => 'ctid'::name, + inherited => false::boolean); + +-- ok: just the fixed values, no stakinds SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, @@ -195,15 +303,17 @@ AND tablename = 'test' AND inherited = false AND attname = 'id'; --- ok: restore by attnum +-- +-- ok: restore by attnum, we normally reserve this for +-- indexes, but there is no reason it shouldn't work +-- for any stat-having relation. +-- SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attnum', 1::smallint, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.4::real, - 'avg_width', 5::integer, - 'n_distinct', 0.6::real); + 'null_frac', 0.4::real); SELECT * FROM pg_stats @@ -212,14 +322,13 @@ AND tablename = 'test' AND inherited = false AND attname = 'id'; --- warn: unrecognized argument name +-- warn: unrecognized argument name, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, 'null_frac', 0.2::real, - 'avg_width', NULL::integer, 'nope', 0.5::real); SELECT * @@ -229,15 +338,13 @@ AND tablename = 'test' AND inherited = false AND attname = 'id'; --- warn: mcv / mcf null mismatch part 1 +-- warn: mcv / mcf null mismatch part 1, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.6::real, - 'avg_width', 7::integer, - 'n_distinct', -0.7::real, + 'null_frac', 0.21::real, 'most_common_freqs', '{0.1,0.2,0.3}'::real[] ); @@ -248,15 +355,13 @@ AND tablename = 'test' AND inherited = false AND attname = 'id'; --- warn: mcv / mcf null mismatch part 2 +-- warn: mcv / mcf null mismatch part 2, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.7::real, - 'avg_width', 8::integer, - 'n_distinct', -0.8::real, + 'null_frac', 0.21::real, 'most_common_vals', '{1,2,3}'::text ); @@ -267,15 +372,13 @@ AND tablename = 'test' AND inherited = false AND attname = 'id'; --- warn: mcv / mcf type mismatch +-- warn: mcf type mismatch, mcv-pair fails, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.8::real, - 'avg_width', 9::integer, - 'n_distinct', -0.9::real, + 'null_frac', 0.22::real, 'most_common_vals', '{2,1,3}'::text, 'most_common_freqs', '{0.2,0.1}'::double precision[] ); @@ -287,15 +390,13 @@ AND tablename = 'test' AND inherited = false AND attname = 'id'; --- warn: mcv cast failure +-- warn: mcv cast failure, mcv-pair fails, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.9::real, - 'avg_width', 10::integer, - 'n_distinct', -0.4::real, + 'null_frac', 0.23::real, 'most_common_vals', '{2,four,3}'::text, 'most_common_freqs', '{0.3,0.25,0.05}'::real[] ); @@ -313,9 +414,6 @@ SELECT pg_catalog.pg_restore_attribute_stats( 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 1::integer, - 'n_distinct', -0.1::real, 'most_common_vals', '{2,1,3}'::text, 'most_common_freqs', '{0.3,0.25,0.05}'::real[] ); @@ -327,15 +425,13 @@ AND tablename = 'test' AND inherited = false AND attname = 'id'; --- warn: NULL in histogram array +-- warn: NULL in histogram array, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.2::real, - 'avg_width', 2::integer, - 'n_distinct', -0.2::real, + 'null_frac', 0.24::real, 'histogram_bounds', '{1,NULL,3,4}'::text ); @@ -352,10 +448,8 @@ SELECT pg_catalog.pg_restore_attribute_stats( 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.3::real, - 'avg_width', 3::integer, - 'n_distinct', -0.3::real, - 'histogram_bounds', '{1,2,3,4}'::text ); + 'histogram_bounds', '{1,2,3,4}'::text + ); SELECT * FROM pg_stats @@ -364,16 +458,14 @@ AND tablename = 'test' AND inherited = false AND attname = 'id'; --- warn: elem_count_histogram null element +-- warn: elem_count_histogram null element, rest get set SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'tags'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.4::real, - 'avg_width', 5::integer, - 'n_distinct', -0.4::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[] + 'null_frac', 0.25::real, + 'elem_count_histogram', '{1,1,NULL,1,1,1,1,1}'::real[] ); SELECT * @@ -389,9 +481,7 @@ SELECT pg_catalog.pg_restore_attribute_stats( 'attname', 'tags'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.5::real, - 'avg_width', 6::integer, - 'n_distinct', -0.55::real, + 'null_frac', 0.26::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[] ); @@ -402,15 +492,13 @@ AND tablename = 'test' AND inherited = false AND attname = 'tags'; --- range stats on a scalar type +-- warn: range stats on a scalar type, rest ok SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.6::real, - 'avg_width', 7::integer, - 'n_distinct', -0.15::real, + 'null_frac', 0.27::real, 'range_empty_frac', 0.5::real, 'range_length_histogram', '{399,499,Infinity}'::text ); @@ -422,15 +510,13 @@ AND tablename = 'test' AND inherited = false AND attname = 'id'; --- warn: range_empty_frac range_length_hist null mismatch +-- warn: range_empty_frac range_length_hist null mismatch, rest ok SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'arange'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.7::real, - 'avg_width', 8::integer, - 'n_distinct', -0.25::real, + 'null_frac', 0.28::real, 'range_length_histogram', '{399,499,Infinity}'::text ); @@ -441,15 +527,13 @@ AND tablename = 'test' AND inherited = false AND attname = 'arange'; --- warn: range_empty_frac range_length_hist null mismatch part 2 +-- warn: range_empty_frac range_length_hist null mismatch part 2, rest ok SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'arange'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.8::real, - 'avg_width', 9::integer, - 'n_distinct', -0.35::real, + 'null_frac', 0.29::real, 'range_empty_frac', 0.5::real ); @@ -466,9 +550,6 @@ SELECT pg_catalog.pg_restore_attribute_stats( 'attname', 'arange'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.9::real, - 'avg_width', 1::integer, - 'n_distinct', -0.19::real, 'range_empty_frac', 0.5::real, 'range_length_histogram', '{399,499,Infinity}'::text ); @@ -480,15 +561,13 @@ AND tablename = 'test' AND inherited = false AND attname = 'arange'; --- warn: range bounds histogram on scalar +-- warn: range bounds histogram on scalar, rest ok SELECT pg_catalog.pg_restore_attribute_stats( 'relation', 'stats_import.test'::regclass, 'attname', 'id'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', -0.29::real, + 'null_frac', 0.31::real, 'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text ); @@ -505,9 +584,6 @@ SELECT pg_catalog.pg_restore_attribute_stats( 'attname', 'arange'::name, 'inherited', false::boolean, 'version', 150000::integer, - 'null_frac', 0.2::real, - 'avg_width', 3::integer, - 'n_distinct', -0.39::real, 'range_bounds_histogram', '{"[-1,1)","[0,4)","[1,4)","[1,100)"}'::text ); @@ -518,23 +594,14 @@ AND tablename = 'test' AND inherited = false AND attname = 'arange'; --- warn: cannot set most_common_elems for range type +-- warn: cannot set most_common_elems for range type, rest ok SELECT pg_catalog.pg_restore_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, + 'null_frac', 0.32::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 + 'most_common_elem_freqs', '{0.3,0.2,0.2,0.3,0.0}'::real[] ); SELECT * @@ -544,14 +611,12 @@ AND tablename = 'test' AND inherited = false AND attname = 'arange'; --- warn: scalars can't have mcelem +-- warn: scalars can't have mcelem, rest ok SELECT pg_catalog.pg_restore_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, + 'null_frac', 0.33::real, 'most_common_elems', '{1,3}'::text, 'most_common_elem_freqs', '{0.3,0.2,0.2,0.3,0.0}'::real[] ); @@ -563,14 +628,12 @@ AND tablename = 'test' AND inherited = false AND attname = 'id'; --- warn: mcelem / mcelem mismatch +-- warn: mcelem / mcelem mismatch, rest ok SELECT pg_catalog.pg_restore_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, + 'null_frac', 0.34::real, 'most_common_elems', '{one,two}'::text ); @@ -581,25 +644,27 @@ AND tablename = 'test' AND inherited = false AND attname = 'tags'; --- warn: mcelem / mcelem null mismatch part 2 +-- warn: mcelem / mcelem null mismatch part 2, rest ok SELECT pg_catalog.pg_restore_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, + 'null_frac', 0.35::real, 'most_common_elem_freqs', '{0.3,0.2,0.2,0.3}'::real[] ); +SELECT * +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'tags'; + -- ok: mcelem SELECT pg_catalog.pg_restore_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[] ); @@ -611,15 +676,13 @@ AND tablename = 'test' AND inherited = false AND attname = 'tags'; --- warn: scalars can't have elem_count_histogram +-- warn: scalars can't have elem_count_histogram, rest ok SELECT pg_catalog.pg_restore_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[] + 'null_frac', 0.36::real, + 'elem_count_histogram', '{1,1,1,1,1,1,1,1,1,1}'::real[] ); SELECT * @@ -629,32 +692,6 @@ AND tablename = 'test' AND inherited = false AND attname = 'id'; --- warn: too many stat kinds -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', 'arange'::name, - 'inherited', false::boolean, - 'version', 150000::integer, - 'null_frac', 0.5::real, - 'avg_width', 2::integer, - 'n_distinct', -0.1::real, - 'most_common_vals', '{"[2,3)","[1,3)","[3,9)"}'::text, - 'most_common_freqs', '{0.3,0.25,0.05}'::real[], - 'histogram_bounds', '{"[1,2)","[2,3)","[3,4)","[4,)"}'::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); - -SELECT * -FROM pg_stats -WHERE schemaname = 'stats_import' -AND tablename = 'test' -AND inherited = false -AND attname = 'arange'; - -- -- 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 @@ -674,15 +711,6 @@ SELECT 4, 'four', NULL, int4range(0,100), NULL; CREATE INDEX is_odd ON stats_import.test(((comp).a % 2 = 1)); --- restoring stats on index -SELECT * FROM pg_catalog.pg_restore_relation_stats( - 'relation', 'stats_import.is_odd'::regclass, - 'version', '180000'::integer, - 'relpages', '11'::integer, - 'reltuples', '10000'::real, - 'relallvisible', '0'::integer -); - -- Generate statistics on table with data ANALYZE stats_import.test; @@ -835,154 +863,24 @@ 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; --- ok +-- attribute stats exist before a clear, but not after +SELECT COUNT(*) +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; + SELECT pg_catalog.pg_clear_attribute_stats( relation => 'stats_import.test'::regclass, attname => 'arange'::name, inherited => false::boolean); --- --- Negative tests --- - ---- error: relation is wrong type -SELECT pg_catalog.pg_restore_relation_stats( - 'relation', 0::oid, - 'relpages', 17::integer, - 'reltuples', 400.0::real, - 'relallvisible', 4::integer); - ---- error: relation not found -SELECT pg_catalog.pg_restore_relation_stats( - 'relation', 0::regclass, - 'relpages', 17::integer, - 'reltuples', 400.0::real, - 'relallvisible', 4::integer); - --- warn and error: unrecognized argument name -SELECT pg_restore_relation_stats( - 'relation', '0'::oid::regclass, - 'version', 150000::integer, - 'relpages', '17'::integer, - 'reltuples', 400::real, - 'nope', 4::integer); - --- error: argument name is NULL -SELECT pg_restore_relation_stats( - 'relation', '0'::oid::regclass, - 'version', 150000::integer, - NULL, '17'::integer, - 'reltuples', 400::real, - 'relallvisible', 4::integer); - --- error: argument name is an integer -SELECT pg_restore_relation_stats( - 'relation', '0'::oid::regclass, - 'version', 150000::integer, - 17, '17'::integer, - 'reltuples', 400::real, - 'relallvisible', 4::integer); - --- error: odd number of variadic arguments cannot be pairs -SELECT pg_restore_relation_stats( - 'relation', '0'::oid::regclass, - 'version', 150000::integer, - 'relpages', '17'::integer, - 'reltuples', 400::real, - 'relallvisible'); - --- error: object doesn't exist -SELECT pg_restore_relation_stats( - 'relation', '0'::oid::regclass, - 'version', 150000::integer, - 'relpages', '17'::integer, - 'reltuples', 400::real, - 'relallvisible', 4::integer); - --- error: object does not exist -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', '0'::oid::regclass, - 'attname', 'id'::name, - 'inherited', false::boolean, - 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); - --- error: relation null -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', NULL::oid, - 'attname', 'id'::name, - 'inherited', false::boolean, - 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); - --- error: missing attname -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', NULL::name, - 'inherited', false::boolean, - 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); - --- error: both attname and attnum -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', 'id'::name, - 'attnum', 1::smallint, - 'inherited', false::boolean, - 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); - --- error: attname doesn't exist -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', 'nope'::name, - 'inherited', false::boolean, - 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); - --- error: attribute is system column -SELECT pg_catalog.pg_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', 'xmin'::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_restore_attribute_stats( - 'relation', 'stats_import.test'::regclass, - 'attname', 'id'::name, - 'inherited', NULL::boolean, - 'version', 150000::integer, - 'null_frac', 0.1::real, - 'avg_width', 2::integer, - 'n_distinct', 0.3::real); - --- error: relation not found -SELECT pg_catalog.pg_clear_relation_stats( - relation => 'stats_import.nope'::regclass); - --- error: attribute is system column -SELECT pg_catalog.pg_clear_attribute_stats( - relation => 'stats_import.test'::regclass, - attname => 'ctid'::name, - inherited => false::boolean); - --- error: attname doesn't exist -SELECT pg_catalog.pg_clear_attribute_stats( - relation => 'stats_import.test'::regclass, - attname => 'nope'::name, - inherited => false::boolean); +SELECT COUNT(*) +FROM pg_stats +WHERE schemaname = 'stats_import' +AND tablename = 'test' +AND inherited = false +AND attname = 'arange'; DROP SCHEMA stats_import CASCADE; base-commit: 62ec3e1f6786181431210643a2d427b9a98b8af8 -- 2.48.1