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When converting DISTINCT to GROUP BY where the columns are from the covering index and they are quoted twice in the SELECT list the optimizer is creating improper processing sequence. This is because of the fact that the columns of the covering index are not recognized as such and treated as non-index columns. Generally speaking duplicate columns can safely be removed from the GROUP BY/DISTINCT list because this will not add or remove new rows in the resulting set. Duplicates can be removed even if they are not consecutive (as is the case for ORDER BY, where the duplicate columns can be removed only if they are consecutive). So we can safely transform "SELECT DISTINCT a,a FROM ... ORDER BY a" to "SELECT a,a FROM ... GROUP BY a ORDER BY a" instead of "SELECT a,a FROM .. GROUP BY a,a ORDER BY a". We can even transform "SELECT DISTINCT a,b,a FROM ... ORDER BY a,b" to "SELECT a,b,a FROM ... GROUP BY a,b ORDER BY a,b". The fix to this bug consists of checking for duplicate columns in the SELECT list when constructing the GROUP BY list in transforming DISTINCT to GROUP BY and skipping the ones that are already in.
800 lines
43 KiB
Text
800 lines
43 KiB
Text
#
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# Test file for WL#1724 (Min/Max Optimization for Queries with Group By Clause).
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# The queries in this file test query execution via QUICK_GROUP_MIN_MAX_SELECT.
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#
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#
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# TODO:
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# Add queries with:
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# - C != const
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# - C IS NOT NULL
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# - HAVING clause
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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create table t1 (
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a1 char(64), a2 char(64), b char(16), c char(16) not null, d char(16), dummy char(64) default ' '
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);
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insert into t1 (a1, a2, b, c, d) values
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('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'),
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('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'),
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('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'),
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('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'),
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('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'),
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('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'),
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('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'),
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('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'),
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('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'),
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('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'),
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('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'),
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('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'),
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('d','a','a','a411','xy1'),('d','a','a','b411','xy2'),('d','a','a','c411','xy3'),('d','a','a','d411','xy4'),
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('d','a','b','e412','xy1'),('d','a','b','f412','xy2'),('d','a','b','g412','xy3'),('d','a','b','h412','xy4'),
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('d','b','a','i421','xy1'),('d','b','a','j421','xy2'),('d','b','a','k421','xy3'),('d','b','a','l421','xy4'),
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('d','b','b','m422','xy1'),('d','b','b','n422','xy2'),('d','b','b','o422','xy3'),('d','b','b','p422','xy4'),
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('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'),
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('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'),
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('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'),
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('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'),
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('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'),
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('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'),
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('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'),
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('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'),
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('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'),
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('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'),
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('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'),
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('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'),
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('d','a','a','a411','xy1'),('d','a','a','b411','xy2'),('d','a','a','c411','xy3'),('d','a','a','d411','xy4'),
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('d','a','b','e412','xy1'),('d','a','b','f412','xy2'),('d','a','b','g412','xy3'),('d','a','b','h412','xy4'),
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('d','b','a','i421','xy1'),('d','b','a','j421','xy2'),('d','b','a','k421','xy3'),('d','b','a','l421','xy4'),
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('d','b','b','m422','xy1'),('d','b','b','n422','xy2'),('d','b','b','o422','xy3'),('d','b','b','p422','xy4');
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create index idx_t1_0 on t1 (a1);
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create index idx_t1_1 on t1 (a1,a2,b,c);
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create index idx_t1_2 on t1 (a1,a2,b);
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analyze table t1;
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-- t2 is the same as t1, but with some NULLs in the MIN/MAX column, and one more
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-- nullable attribute
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--disable_warnings
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drop table if exists t2;
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--enable_warnings
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create table t2 (
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a1 char(64), a2 char(64) not null, b char(16), c char(16), d char(16), dummy char(64) default ' '
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);
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insert into t2 select * from t1;
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-- add few rows with NULL's in the MIN/MAX column
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insert into t2 (a1, a2, b, c, d) values
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('a','a',NULL,'a777','xyz'),('a','a',NULL,'a888','xyz'),('a','a',NULL,'a999','xyz'),
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('a','a','a',NULL,'xyz'),
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('a','a','b',NULL,'xyz'),
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('a','b','a',NULL,'xyz'),
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('c','a',NULL,'c777','xyz'),('c','a',NULL,'c888','xyz'),('c','a',NULL,'c999','xyz'),
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('d','b','b',NULL,'xyz'),
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('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),
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('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),
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('a','a',NULL,'a777','xyz'),('a','a',NULL,'a888','xyz'),('a','a',NULL,'a999','xyz'),
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('a','a','a',NULL,'xyz'),
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('a','a','b',NULL,'xyz'),
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('a','b','a',NULL,'xyz'),
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('c','a',NULL,'c777','xyz'),('c','a',NULL,'c888','xyz'),('c','a',NULL,'c999','xyz'),
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('d','b','b',NULL,'xyz'),
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('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),
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('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz');
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create index idx_t2_0 on t2 (a1);
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create index idx_t2_1 on t2 (a1,a2,b,c);
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create index idx_t2_2 on t2 (a1,a2,b);
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analyze table t2;
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-- Table t3 is the same as t1, but with smaller column lenghts.
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-- This allows to test different branches of the cost computation procedure
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-- when the number of keys per block are less than the number of keys in the
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-- sub-groups formed by predicates over non-group attributes.
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--disable_warnings
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drop table if exists t3;
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--enable_warnings
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create table t3 (
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a1 char(1), a2 char(1), b char(1), c char(4) not null, d char(3), dummy char(1) default ' '
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);
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insert into t3 (a1, a2, b, c, d) values
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('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'),
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('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'),
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('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'),
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('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'),
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('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'),
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('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'),
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('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'),
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('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'),
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('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'),
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('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'),
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('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'),
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('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4');
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insert into t3 (a1, a2, b, c, d) values
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('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'),
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('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'),
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('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'),
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('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'),
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('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'),
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('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'),
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('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'),
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('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'),
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('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'),
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('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'),
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('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'),
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('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4');
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insert into t3 (a1, a2, b, c, d) values
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('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'),
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('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'),
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('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'),
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('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'),
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('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'),
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('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'),
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('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'),
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('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'),
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('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'),
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('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'),
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('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'),
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('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4');
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insert into t3 (a1, a2, b, c, d) values
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('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'),
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('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'),
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('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'),
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('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'),
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('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'),
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('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'),
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('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'),
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('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'),
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('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'),
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('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'),
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('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'),
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('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4');
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create index idx_t3_0 on t3 (a1);
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create index idx_t3_1 on t3 (a1,a2,b,c);
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create index idx_t3_2 on t3 (a1,a2,b);
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analyze table t3;
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--
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-- Queries without a WHERE clause. These queries do not use ranges.
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--
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-- plans
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explain select a1, min(a2) from t1 group by a1;
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explain select a1, max(a2) from t1 group by a1;
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explain select a1, min(a2), max(a2) from t1 group by a1;
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explain select a1, a2, b, min(c), max(c) from t1 group by a1,a2,b;
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explain select a1,a2,b,max(c),min(c) from t1 group by a1,a2,b;
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--replace_column 7 # 9 #
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explain select a1,a2,b,max(c),min(c) from t2 group by a1,a2,b;
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-- Select fields in different order
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explain select min(a2), a1, max(a2), min(a2), a1 from t1 group by a1;
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explain select a1, b, min(c), a1, max(c), b, a2, max(c), max(c) from t1 group by a1, a2, b;
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explain select min(a2) from t1 group by a1;
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explain select a2, min(c), max(c) from t1 group by a1,a2,b;
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-- queries
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select a1, min(a2) from t1 group by a1;
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select a1, max(a2) from t1 group by a1;
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select a1, min(a2), max(a2) from t1 group by a1;
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select a1, a2, b, min(c), max(c) from t1 group by a1,a2,b;
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select a1,a2,b,max(c),min(c) from t1 group by a1,a2,b;
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select a1,a2,b,max(c),min(c) from t2 group by a1,a2,b;
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-- Select fields in different order
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select min(a2), a1, max(a2), min(a2), a1 from t1 group by a1;
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select a1, b, min(c), a1, max(c), b, a2, max(c), max(c) from t1 group by a1, a2, b;
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select min(a2) from t1 group by a1;
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select a2, min(c), max(c) from t1 group by a1,a2,b;
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--
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-- Queries with a where clause
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--
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-- A) Preds only over the group 'A' attributes
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-- plans
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explain select a1,a2,b,min(c),max(c) from t1 where a1 < 'd' group by a1,a2,b;
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explain select a1,a2,b,min(c),max(c) from t1 where a1 >= 'b' group by a1,a2,b;
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explain select a1,a2,b, max(c) from t1 where a1 >= 'c' or a1 < 'b' group by a1,a2,b;
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explain select a1, max(c) from t1 where a1 >= 'c' or a1 < 'b' group by a1,a2,b;
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explain select a1,a2,b,min(c),max(c) from t1 where a1 >= 'c' or a2 < 'b' group by a1,a2,b;
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explain select a1,a2,b, max(c) from t1 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b;
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explain select a1,a2,b,min(c),max(c) from t1 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b;
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explain select a1,a2,b, max(c) from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b;
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explain select a1,a2,b,min(c),max(c) from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b;
|
|
explain select a1,min(c),max(c) from t1 where a1 >= 'b' group by a1,a2,b;
|
|
explain select a1, max(c) from t1 where a1 in ('a','b','d') group by a1,a2,b;
|
|
|
|
--replace_column 9 #
|
|
explain select a1,a2,b, max(c) from t2 where a1 < 'd' group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where a1 < 'd' group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where a1 >= 'b' group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b, max(c) from t2 where a1 >= 'c' or a1 < 'b' group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1, max(c) from t2 where a1 >= 'c' or a1 < 'b' group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where a1 >= 'c' or a2 < 'b' group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b, max(c) from t2 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b, max(c) from t2 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,min(c),max(c) from t2 where a1 >= 'b' group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1, max(c) from t2 where a1 in ('a','b','d') group by a1,a2,b;
|
|
|
|
-- queries
|
|
select a1,a2,b,min(c),max(c) from t1 where a1 < 'd' group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where a1 >= 'b' group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t1 where a1 >= 'c' or a1 < 'b' group by a1,a2,b;
|
|
select a1, max(c) from t1 where a1 >= 'c' or a1 < 'b' group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where a1 >= 'c' or a2 < 'b' group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t1 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b;
|
|
select a1,min(c),max(c) from t1 where a1 >= 'b' group by a1,a2,b;
|
|
select a1, max(c) from t1 where a1 in ('a','b','d') group by a1,a2,b;
|
|
|
|
select a1,a2,b, max(c) from t2 where a1 < 'd' group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where a1 < 'd' group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where a1 >= 'b' group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t2 where a1 >= 'c' or a1 < 'b' group by a1,a2,b;
|
|
select a1, max(c) from t2 where a1 >= 'c' or a1 < 'b' group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where a1 >= 'c' or a2 < 'b' group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t2 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t2 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b;
|
|
select a1,min(c),max(c) from t2 where a1 >= 'b' group by a1,a2,b;
|
|
select a1, max(c) from t2 where a1 in ('a','b','d') group by a1,a2,b;
|
|
|
|
-- B) Equalities only over the non-group 'B' attributes
|
|
-- plans
|
|
explain select a1,a2,b,max(c),min(c) from t1 where (a2 = 'a') and (b = 'b') group by a1;
|
|
explain select a1,max(c),min(c) from t1 where (a2 = 'a') and (b = 'b') group by a1;
|
|
explain select a1,a2,b, max(c) from t1 where (b = 'b') group by a1,a2;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (b = 'b') group by a1,a2;
|
|
explain select a1,a2, max(c) from t1 where (b = 'b') group by a1,a2;
|
|
|
|
explain select a1,a2,b,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') group by a1;
|
|
explain select a1,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') group by a1;
|
|
explain select a1,a2,b, max(c) from t2 where (b = 'b') group by a1,a2;
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (b = 'b') group by a1,a2;
|
|
explain select a1,a2, max(c) from t2 where (b = 'b') group by a1,a2;
|
|
|
|
-- these queries test case 2) in TRP_GROUP_MIN_MAX::update_cost()
|
|
explain select a1,a2,b,max(c),min(c) from t3 where (a2 = 'a') and (b = 'b') group by a1;
|
|
explain select a1,max(c),min(c) from t3 where (a2 = 'a') and (b = 'b') group by a1;
|
|
|
|
-- queries
|
|
select a1,a2,b,max(c),min(c) from t1 where (a2 = 'a') and (b = 'b') group by a1;
|
|
select a1,max(c),min(c) from t1 where (a2 = 'a') and (b = 'b') group by a1;
|
|
select a1,a2,b, max(c) from t1 where (b = 'b') group by a1,a2;
|
|
select a1,a2,b,min(c),max(c) from t1 where (b = 'b') group by a1,a2;
|
|
select a1,a2, max(c) from t1 where (b = 'b') group by a1,a2;
|
|
|
|
select a1,a2,b,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') group by a1;
|
|
select a1,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') group by a1;
|
|
select a1,a2,b, max(c) from t2 where (b = 'b') group by a1,a2;
|
|
select a1,a2,b,min(c),max(c) from t2 where (b = 'b') group by a1,a2;
|
|
select a1,a2, max(c) from t2 where (b = 'b') group by a1,a2;
|
|
|
|
-- these queries test case 2) in TRP_GROUP_MIN_MAX::update_cost()
|
|
select a1,a2,b,max(c),min(c) from t3 where (a2 = 'a') and (b = 'b') group by a1;
|
|
select a1,max(c),min(c) from t3 where (a2 = 'a') and (b = 'b') group by a1;
|
|
|
|
|
|
-- IS NULL (makes sense for t2 only)
|
|
-- plans
|
|
explain select a1,a2,b,min(c) from t2 where (a2 = 'a') and b is NULL group by a1;
|
|
explain select a1,a2,b,max(c) from t2 where (a2 = 'a') and b is NULL group by a1;
|
|
explain select a1,a2,b,min(c) from t2 where b is NULL group by a1,a2;
|
|
explain select a1,a2,b,max(c) from t2 where b is NULL group by a1,a2;
|
|
explain select a1,a2,b,min(c),max(c) from t2 where b is NULL group by a1,a2;
|
|
explain select a1,a2,b,min(c),max(c) from t2 where b is NULL group by a1,a2;
|
|
-- queries
|
|
select a1,a2,b,min(c) from t2 where (a2 = 'a') and b is NULL group by a1;
|
|
select a1,a2,b,max(c) from t2 where (a2 = 'a') and b is NULL group by a1;
|
|
select a1,a2,b,min(c) from t2 where b is NULL group by a1,a2;
|
|
select a1,a2,b,max(c) from t2 where b is NULL group by a1,a2;
|
|
select a1,a2,b,min(c),max(c) from t2 where b is NULL group by a1,a2;
|
|
select a1,a2,b,min(c),max(c) from t2 where b is NULL group by a1,a2;
|
|
|
|
-- C) Range predicates for the MIN/MAX attribute
|
|
-- plans
|
|
--replace_column 9 #
|
|
explain select a1,a2,b, max(c) from t1 where (c > 'b1') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (c > 'b1') group by a1,a2,b;
|
|
explain select a1,a2,b, max(c) from t1 where (c > 'f123') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (c > 'f123') group by a1,a2,b;
|
|
explain select a1,a2,b, max(c) from t1 where (c < 'a0') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (c < 'a0') group by a1,a2,b;
|
|
explain select a1,a2,b, max(c) from t1 where (c < 'k321') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (c < 'k321') group by a1,a2,b;
|
|
explain select a1,a2,b, max(c) from t1 where (c < 'a0') or (c > 'b1') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (c < 'a0') or (c > 'b1') group by a1,a2,b;
|
|
explain select a1,a2,b, max(c) from t1 where (c > 'b1') or (c <= 'g1') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (c > 'b1') or (c <= 'g1') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (c > 'b111') and (c <= 'g112') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (c < 'c5') or (c = 'g412') or (c = 'k421') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where ((c > 'b111') and (c <= 'g112')) or ((c > 'd000') and (c <= 'i110')) group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (c between 'b111' and 'g112') or (c between 'd000' and 'i110') group by a1,a2,b;
|
|
|
|
--replace_column 9 #
|
|
explain select a1,a2,b, max(c) from t2 where (c > 'b1') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (c > 'b1') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b, max(c) from t2 where (c > 'f123') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (c > 'f123') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b, max(c) from t2 where (c < 'a0') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (c < 'a0') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b, max(c) from t2 where (c < 'k321') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (c < 'k321') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b, max(c) from t2 where (c < 'a0') or (c > 'b1') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (c < 'a0') or (c > 'b1') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b, max(c) from t2 where (c > 'b1') or (c <= 'g1') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (c > 'b1') or (c <= 'g1') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (c > 'b111') and (c <= 'g112') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (c < 'c5') or (c = 'g412') or (c = 'k421') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where ((c > 'b111') and (c <= 'g112')) or ((c > 'd000') and (c <= 'i110')) group by a1,a2,b;
|
|
|
|
-- queries
|
|
select a1,a2,b, max(c) from t1 where (c > 'b1') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (c > 'b1') group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t1 where (c > 'f123') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (c > 'f123') group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t1 where (c < 'a0') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (c < 'a0') group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t1 where (c < 'k321') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (c < 'k321') group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t1 where (c < 'a0') or (c > 'b1') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (c < 'a0') or (c > 'b1') group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t1 where (c > 'b1') or (c <= 'g1') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (c > 'b1') or (c <= 'g1') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (c > 'b111') and (c <= 'g112') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (c < 'c5') or (c = 'g412') or (c = 'k421') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where ((c > 'b111') and (c <= 'g112')) or ((c > 'd000') and (c <= 'i110')) group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (c between 'b111' and 'g112') or (c between 'd000' and 'i110') group by a1,a2,b;
|
|
|
|
select a1,a2,b, max(c) from t2 where (c > 'b1') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where (c > 'b1') group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t2 where (c > 'f123') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where (c > 'f123') group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t2 where (c < 'a0') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where (c < 'a0') group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t2 where (c < 'k321') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where (c < 'k321') group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t2 where (c < 'a0') or (c > 'b1') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where (c < 'a0') or (c > 'b1') group by a1,a2,b;
|
|
select a1,a2,b, max(c) from t2 where (c > 'b1') or (c <= 'g1') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where (c > 'b1') or (c <= 'g1') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where (c > 'b111') and (c <= 'g112') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where (c < 'c5') or (c = 'g412') or (c = 'k421') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where ((c > 'b111') and (c <= 'g112')) or ((c > 'd000') and (c <= 'i110')) group by a1,a2,b;
|
|
|
|
-- analyze the sub-select
|
|
explain select a1,a2,b,min(c),max(c) from t1
|
|
where exists ( select * from t2 where t2.c = t1.c )
|
|
group by a1,a2,b;
|
|
|
|
-- the sub-select is unrelated to MIN/MAX
|
|
explain select a1,a2,b,min(c),max(c) from t1
|
|
where exists ( select * from t2 where t2.c > 'b1' )
|
|
group by a1,a2,b;
|
|
|
|
|
|
-- A,B,C) Predicates referencing mixed classes of attributes
|
|
-- plans
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (a1 >= 'c' or a2 < 'b') and (c > 'b111') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c),max(c) from t1 where (a2 >= 'b') and (b = 'a') and (c > 'b111') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c) from t1 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c < 'h112') or (c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122')) group by a1,a2,b;
|
|
explain select a1,a2,b,min(c) from t1 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122') or (c < 'h112') or (c = 'c111')) group by a1,a2,b;
|
|
explain select a1,a2,b,min(c) from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
explain select a1,a2,b,min(c) from t1 where (ord(a1) > 97) and (ord(a2) + ord(a1) > 194) and (b = 'c') group by a1,a2,b;
|
|
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (a1 >= 'c' or a2 < 'b') and (c > 'b111') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c),max(c) from t2 where (a2 >= 'b') and (b = 'a') and (c > 'b111') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c) from t2 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c < 'h112') or (c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122')) group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c) from t2 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122') or (c < 'h112') or (c = 'c111')) group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,min(c) from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
|
|
-- queries
|
|
select a1,a2,b,min(c),max(c) from t1 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (a1 >= 'c' or a2 < 'b') and (c > 'b111') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t1 where (a2 >= 'b') and (b = 'a') and (c > 'b111') group by a1,a2,b;
|
|
select a1,a2,b,min(c) from t1 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c < 'h112') or (c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122')) group by a1,a2,b;
|
|
select a1,a2,b,min(c) from t1 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122') or (c < 'h112') or (c = 'c111')) group by a1,a2,b;
|
|
select a1,a2,b,min(c) from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
select a1,a2,b,min(c) from t1 where (ord(a1) > 97) and (ord(a2) + ord(a1) > 194) and (b = 'c') group by a1,a2,b;
|
|
|
|
select a1,a2,b,min(c),max(c) from t2 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where (a1 >= 'c' or a2 < 'b') and (c > 'b111') group by a1,a2,b;
|
|
select a1,a2,b,min(c),max(c) from t2 where (a2 >= 'b') and (b = 'a') and (c > 'b111') group by a1,a2,b;
|
|
select a1,a2,b,min(c) from t2 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c < 'h112') or (c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122')) group by a1,a2,b;
|
|
select a1,a2,b,min(c) from t2 where ((a1 > 'a') or (a1 < '9')) and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122') or (c < 'h112') or (c = 'c111')) group by a1,a2,b;
|
|
select a1,a2,b,min(c) from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
|
|
|
|
--
|
|
-- GROUP BY queries without MIN/MAX
|
|
--
|
|
|
|
-- plans
|
|
explain select a1,a2,b from t1 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;
|
|
explain select a1,a2,b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
explain select a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;
|
|
explain select a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
|
|
--replace_column 9 #
|
|
explain select a1,a2,b from t2 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
|
|
-- queries
|
|
select a1,a2,b from t1 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;
|
|
select a1,a2,b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
select a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;
|
|
select a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
|
|
select a1,a2,b from t2 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;
|
|
select a1,a2,b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
select a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;
|
|
select a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
|
|
--
|
|
-- DISTINCT queries
|
|
--
|
|
|
|
-- plans
|
|
explain select distinct a1,a2,b from t1;
|
|
explain select distinct a1,a2,b from t1 where (a2 >= 'b') and (b = 'a');
|
|
explain select distinct a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
|
|
explain select distinct a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c');
|
|
explain select distinct b from t1 where (a2 >= 'b') and (b = 'a');
|
|
|
|
--replace_column 9 #
|
|
explain select distinct a1,a2,b from t2;
|
|
--replace_column 9 #
|
|
explain select distinct a1,a2,b from t2 where (a2 >= 'b') and (b = 'a');
|
|
explain select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
|
|
--replace_column 9 #
|
|
explain select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c');
|
|
explain select distinct b from t2 where (a2 >= 'b') and (b = 'a');
|
|
|
|
-- queries
|
|
select distinct a1,a2,b from t1;
|
|
select distinct a1,a2,b from t1 where (a2 >= 'b') and (b = 'a');
|
|
select distinct a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
|
|
select distinct a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c');
|
|
select distinct b from t1 where (a2 >= 'b') and (b = 'a');
|
|
|
|
select distinct a1,a2,b from t2;
|
|
select distinct a1,a2,b from t2 where (a2 >= 'b') and (b = 'a');
|
|
select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
|
|
select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c');
|
|
select distinct b from t2 where (a2 >= 'b') and (b = 'a');
|
|
|
|
-- BUG #6303
|
|
select distinct t_00.a1
|
|
from t1 t_00
|
|
where exists ( select * from t2 where a1 = t_00.a1 );
|
|
|
|
-- BUG #8532 - SELECT DISTINCT a, a causes server to crash
|
|
select distinct a1,a1 from t1;
|
|
select distinct a2,a1,a2,a1 from t1;
|
|
select distinct t1.a1,t2.a1 from t1,t2;
|
|
|
|
|
|
--
|
|
-- DISTINCT queries with GROUP-BY
|
|
--
|
|
|
|
-- plans
|
|
explain select distinct a1,a2,b from t1;
|
|
explain select distinct a1,a2,b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
explain select distinct a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;
|
|
explain select distinct a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
explain select distinct b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
|
|
--replace_column 9 #
|
|
explain select distinct a1,a2,b from t2;
|
|
--replace_column 9 #
|
|
explain select distinct a1,a2,b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
--replace_column 9 #
|
|
explain select distinct b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
|
|
-- queries
|
|
select distinct a1,a2,b from t1;
|
|
select distinct a1,a2,b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
select distinct a1,a2,b,c from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;
|
|
select distinct a1,a2,b from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
select distinct b from t1 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
|
|
select distinct a1,a2,b from t2;
|
|
select distinct a1,a2,b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;
|
|
select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;
|
|
select distinct b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;
|
|
|
|
|
|
--
|
|
-- COUNT (DISTINCT cols) queries
|
|
--
|
|
|
|
explain select count(distinct a1,a2,b) from t1 where (a2 >= 'b') and (b = 'a');
|
|
explain select count(distinct a1,a2,b,c) from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
|
|
explain select count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c');
|
|
explain select count(distinct b) from t1 where (a2 >= 'b') and (b = 'a');
|
|
explain select ord(a1) + count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a');
|
|
|
|
select count(distinct a1,a2,b) from t1 where (a2 >= 'b') and (b = 'a');
|
|
select count(distinct a1,a2,b,c) from t1 where (a2 >= 'b') and (b = 'a') and (c = 'i121');
|
|
select count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a') and (b = 'c');
|
|
select count(distinct b) from t1 where (a2 >= 'b') and (b = 'a');
|
|
select ord(a1) + count(distinct a1,a2,b) from t1 where (a1 > 'a') and (a2 > 'a');
|
|
|
|
--
|
|
-- Queries with expressions in the select clause
|
|
--
|
|
|
|
explain select a1,a2,b, concat(min(c), max(c)) from t1 where a1 < 'd' group by a1,a2,b;
|
|
explain select concat(a1,min(c)),b from t1 where a1 < 'd' group by a1,a2,b;
|
|
explain select concat(a1,min(c)),b,max(c) from t1 where a1 < 'd' group by a1,a2,b;
|
|
explain select concat(a1,a2),b,min(c),max(c) from t1 where a1 < 'd' group by a1,a2,b;
|
|
explain select concat(ord(min(b)),ord(max(b))),min(b),max(b) from t1 group by a1,a2;
|
|
|
|
select a1,a2,b, concat(min(c), max(c)) from t1 where a1 < 'd' group by a1,a2,b;
|
|
select concat(a1,min(c)),b from t1 where a1 < 'd' group by a1,a2,b;
|
|
select concat(a1,min(c)),b,max(c) from t1 where a1 < 'd' group by a1,a2,b;
|
|
select concat(a1,a2),b,min(c),max(c) from t1 where a1 < 'd' group by a1,a2,b;
|
|
select concat(ord(min(b)),ord(max(b))),min(b),max(b) from t1 group by a1,a2;
|
|
|
|
|
|
--
|
|
-- Negative examples: queries that should NOT be treated as optimizable by
|
|
-- QUICK_GROUP_MIN_MAX_SELECT
|
|
--
|
|
|
|
-- select a non-indexed attribute
|
|
explain select a1,a2,b,d,min(c),max(c) from t1 group by a1,a2,b;
|
|
|
|
explain select a1,a2,b,d from t1 group by a1,a2,b;
|
|
|
|
-- predicate that references an attribute that is after the MIN/MAX argument
|
|
-- in the index
|
|
explain select a1,a2,min(b),max(b) from t1
|
|
where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (c > 'a111') group by a1,a2;
|
|
|
|
-- predicate that references a non-indexed attribute
|
|
explain select a1,a2,b,min(c),max(c) from t1
|
|
where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (d > 'xy2') group by a1,a2,b;
|
|
|
|
explain select a1,a2,b,c from t1
|
|
where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (d > 'xy2') group by a1,a2,b,c;
|
|
|
|
-- non-equality predicate for a non-group select attribute
|
|
explain select a1,a2,b,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') or (b < 'b') group by a1;
|
|
explain select a1,a2,b from t1 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') and (c > 'a111') group by a1,a2,b;
|
|
|
|
-- non-group field with an equality predicate that references a keypart after the
|
|
-- MIN/MAX argument
|
|
explain select a1,a2,min(b),c from t2 where (a2 = 'a') and (c = 'a111') group by a1;
|
|
select a1,a2,min(b),c from t2 where (a2 = 'a') and (c = 'a111') group by a1;
|
|
|
|
-- disjunction for a non-group select attribute
|
|
explain select a1,a2,b,max(c),min(c) from t2 where (a2 = 'a') and (b = 'b') or (b = 'a') group by a1;
|
|
|
|
-- non-range predicate for the MIN/MAX attribute
|
|
explain select a1,a2,b,min(c),max(c) from t2
|
|
where (c > 'a000') and (c <= 'd999') and (c like '_8__') group by a1,a2,b;
|
|
|
|
-- not all attributes are indexed by one index
|
|
explain select a1, a2, b, c, min(d), max(d) from t1 group by a1,a2,b,c;
|
|
|
|
-- other aggregate functions than MIN/MAX
|
|
explain select a1,a2,count(a2) from t1 group by a1,a2,b;
|
|
explain select a1,a2,count(a2) from t1 where (a1 > 'a') group by a1,a2,b;
|
|
explain select sum(ord(a1)) from t1 where (a1 > 'a') group by a1,a2,b;
|
|
|
|
|
|
#
|
|
# Bug #16710: select distinct doesn't return all it should
|
|
#
|
|
|
|
explain select distinct(a1) from t1 where ord(a2) = 98;
|
|
select distinct(a1) from t1 where ord(a2) = 98;
|
|
|
|
#
|
|
# BUG#11044: DISTINCT or GROUP BY queries with equality predicates instead of MIN/MAX.
|
|
#
|
|
|
|
explain select a1 from t1 where a2 = 'b' group by a1;
|
|
select a1 from t1 where a2 = 'b' group by a1;
|
|
|
|
explain select distinct a1 from t1 where a2 = 'b';
|
|
select distinct a1 from t1 where a2 = 'b';
|
|
|
|
#
|
|
# Bug #12672: primary key implcitly included in every innodb index
|
|
#
|
|
|
|
--disable_warnings
|
|
create table t4 (
|
|
pk_col int auto_increment primary key, a1 char(64), a2 char(64), b char(16), c char(16) not null, d char(16), dummy char(64) default ' '
|
|
) engine=innodb;
|
|
--enable_warnings
|
|
insert into t4 (a1, a2, b, c, d, dummy) select * from t1;
|
|
|
|
create index idx12672_0 on t4 (a1);
|
|
create index idx12672_1 on t4 (a1,a2,b,c);
|
|
create index idx12672_2 on t4 (a1,a2,b);
|
|
analyze table t1;
|
|
|
|
select distinct a1 from t4 where pk_col not in (1,2,3,4);
|
|
|
|
drop table t1,t2,t3,t4;
|
|
|
|
#
|
|
# Bug #6142: a problem with the empty innodb table
|
|
#
|
|
|
|
--disable_warnings
|
|
create table t1 (
|
|
a varchar(30), b varchar(30), primary key(a), key(b)
|
|
) engine=innodb;
|
|
--enable_warnings
|
|
select distinct a from t1;
|
|
drop table t1;
|
|
|
|
#
|
|
# Bug #9798: group by with rollup
|
|
#
|
|
|
|
--disable_warnings
|
|
create table t1(a int, key(a)) engine=innodb;
|
|
--enable_warnings
|
|
insert into t1 values(1);
|
|
select a, count(a) from t1 group by a with rollup;
|
|
drop table t1;
|
|
|
|
#
|
|
# Bug #13293 Wrongly used index results in endless loop.
|
|
#
|
|
create table t1 (f1 int, f2 char(1), primary key(f1,f2)) engine=innodb;
|
|
insert into t1 values ( 1,"e"),(2,"a"),( 3,"c"),(4,"d");
|
|
alter table t1 drop primary key, add primary key (f2, f1);
|
|
explain select distinct f1 a, f1 b from t1;
|
|
explain select distinct f1, f2 from t1;
|
|
drop table t1;
|
|
|
|
#
|
|
# Bug #14920 Ordering aggregated result sets with composite primary keys
|
|
# corrupts resultset
|
|
#
|
|
create table t1 (c1 int not null,c2 int not null, primary key(c1,c2));
|
|
insert into t1 (c1,c2) values
|
|
(10,1),(10,2),(10,3),(20,4),(20,5),(20,6),(30,7),(30,8),(30,9);
|
|
select distinct c1, c2 from t1 order by c2;
|
|
select c1,min(c2) as c2 from t1 group by c1 order by c2;
|
|
select c1,c2 from t1 group by c1,c2 order by c2;
|
|
drop table t1;
|
|
|
|
#
|
|
# Bug #16203: Analysis for possible min/max optimization erroneously
|
|
# returns impossible range
|
|
#
|
|
|
|
CREATE TABLE t1 (a varchar(5), b int(11), PRIMARY KEY (a,b));
|
|
INSERT INTO t1 VALUES ('AA',1), ('AA',2), ('AA',3), ('BB',1), ('AA',4);
|
|
OPTIMIZE TABLE t1;
|
|
|
|
SELECT a FROM t1 WHERE a='AA' GROUP BY a;
|
|
SELECT a FROM t1 WHERE a='BB' GROUP BY a;
|
|
|
|
EXPLAIN SELECT a FROM t1 WHERE a='AA' GROUP BY a;
|
|
EXPLAIN SELECT a FROM t1 WHERE a='BB' GROUP BY a;
|
|
|
|
SELECT DISTINCT a FROM t1 WHERE a='BB';
|
|
SELECT DISTINCT a FROM t1 WHERE a LIKE 'B%';
|
|
SELECT a FROM t1 WHERE a LIKE 'B%' GROUP BY a;
|
|
|
|
DROP TABLE t1;
|
|
|
|
|
|
#
|
|
# Bug #15102: select distinct returns empty result, select count
|
|
# distinct > 0 (correct)
|
|
#
|
|
|
|
CREATE TABLE t1 (
|
|
a int(11) NOT NULL DEFAULT '0',
|
|
b varchar(16) COLLATE latin1_general_ci NOT NULL DEFAULT '',
|
|
PRIMARY KEY (a,b)
|
|
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci;
|
|
|
|
delimiter |;
|
|
|
|
CREATE PROCEDURE a(x INT)
|
|
BEGIN
|
|
DECLARE rnd INT;
|
|
DECLARE cnt INT;
|
|
|
|
WHILE x > 0 DO
|
|
SET rnd= x % 100;
|
|
SET cnt = (SELECT COUNT(*) FROM t1 WHERE a = rnd);
|
|
INSERT INTO t1(a,b) VALUES (rnd, CAST(cnt AS CHAR));
|
|
SET x= x - 1;
|
|
END WHILE;
|
|
END|
|
|
|
|
DELIMITER ;|
|
|
|
|
CALL a(1000);
|
|
|
|
SELECT a FROM t1 WHERE a=0;
|
|
SELECT DISTINCT a FROM t1 WHERE a=0;
|
|
SELECT COUNT(DISTINCT a) FROM t1 WHERE a=0;
|
|
|
|
DROP TABLE t1;
|
|
DROP PROCEDURE a;
|
|
|
|
#
|
|
# Bug #18068: SELECT DISTINCT
|
|
#
|
|
|
|
CREATE TABLE t1 (a varchar(64) NOT NULL default '', PRIMARY KEY(a));
|
|
|
|
INSERT INTO t1 (a) VALUES
|
|
(''), ('CENTRAL'), ('EASTERN'), ('GREATER LONDON'),
|
|
('NORTH CENTRAL'), ('NORTH EAST'), ('NORTH WEST'), ('SCOTLAND'),
|
|
('SOUTH EAST'), ('SOUTH WEST'), ('WESTERN');
|
|
|
|
EXPLAIN SELECT DISTINCT a,a FROM t1 ORDER BY a;
|
|
SELECT DISTINCT a,a FROM t1 ORDER BY a;
|
|
|
|
DROP TABLE t1;
|