diff options
Diffstat (limited to 'src/test')
| -rw-r--r-- | src/test/regress/expected/stats_ext.out | 18 | ||||
| -rw-r--r-- | src/test/regress/sql/stats_ext.sql | 8 |
2 files changed, 23 insertions, 3 deletions
diff --git a/src/test/regress/expected/stats_ext.out b/src/test/regress/expected/stats_ext.out index bd6d8be4344..f2f4008283f 100644 --- a/src/test/regress/expected/stats_ext.out +++ b/src/test/regress/expected/stats_ext.out @@ -440,6 +440,12 @@ SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE 8 | 200 (1 row) +SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 2, 51, 52) AND b = ''1'''); + estimated | actual +-----------+-------- + 4 | 100 +(1 row) + SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 26, 51, 76) AND b IN (''1'', ''26'') AND c = 1'); estimated | actual -----------+-------- @@ -600,6 +606,12 @@ SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE 200 | 200 (1 row) +SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 2, 51, 52) AND b = ''1'''); + estimated | actual +-----------+-------- + 100 | 100 +(1 row) + SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 26, 51, 76) AND b IN (''1'', ''26'') AND c = 1'); estimated | actual -----------+-------- @@ -719,12 +731,14 @@ SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE 1 | 0 (1 row) --- check change of column type doesn't break it +-- changing the type of column c causes its single-column stats to be dropped, +-- giving a default estimate of 0.005 * 5000 = 25 for (c = 1); check multiple +-- clauses estimated with functional dependencies does not exceed this ALTER TABLE functional_dependencies ALTER COLUMN c TYPE numeric; SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a = 1 AND b = ''1'' AND c = 1'); estimated | actual -----------+-------- - 50 | 50 + 25 | 50 (1 row) ANALYZE functional_dependencies; diff --git a/src/test/regress/sql/stats_ext.sql b/src/test/regress/sql/stats_ext.sql index 897ed3051c8..f3b652dc4af 100644 --- a/src/test/regress/sql/stats_ext.sql +++ b/src/test/regress/sql/stats_ext.sql @@ -280,6 +280,8 @@ SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 2, 51, 52) AND b IN (''1'', ''2'')'); +SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 2, 51, 52) AND b = ''1'''); + SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 26, 51, 76) AND b IN (''1'', ''26'') AND c = 1'); SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 26, 51, 76) AND b IN (''1'', ''26'') AND c IN (1)'); @@ -342,6 +344,8 @@ SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 2, 51, 52) AND b IN (''1'', ''2'')'); +SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 2, 51, 52) AND b = ''1'''); + SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 26, 51, 76) AND b IN (''1'', ''26'') AND c = 1'); SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 26, 51, 76) AND b IN (''1'', ''26'') AND c IN (1)'); @@ -385,7 +389,9 @@ SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a IN (1, 2, 51, 52) AND b = ALL (ARRAY[''1'', ''2''])'); --- check change of column type doesn't break it +-- changing the type of column c causes its single-column stats to be dropped, +-- giving a default estimate of 0.005 * 5000 = 25 for (c = 1); check multiple +-- clauses estimated with functional dependencies does not exceed this ALTER TABLE functional_dependencies ALTER COLUMN c TYPE numeric; SELECT * FROM check_estimated_rows('SELECT * FROM functional_dependencies WHERE a = 1 AND b = ''1'' AND c = 1'); |