diff options
Diffstat (limited to 'mysql-test/t/group_min_max.test')
-rw-r--r-- | mysql-test/t/group_min_max.test | 1613 |
1 files changed, 0 insertions, 1613 deletions
diff --git a/mysql-test/t/group_min_max.test b/mysql-test/t/group_min_max.test deleted file mode 100644 index b0bc42d7f8c..00000000000 --- a/mysql-test/t/group_min_max.test +++ /dev/null @@ -1,1613 +0,0 @@ -# -# Test file for WL#1724 (Min/Max Optimization for Queries with Group By Clause). -# The queries in this file test query execution via QUICK_GROUP_MIN_MAX_SELECT. -# - -# -# TODO: -# Add queries with: -# - C != const -# - C IS NOT NULL -# - HAVING clause - ---disable_warnings -drop table if exists t1; ---enable_warnings - -create table t1 ( - a1 char(64), a2 char(64), b char(16), c char(16) not null, d char(16), dummy char(248) default ' ' -); - -insert into t1 (a1, a2, b, c, d) values -('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), -('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), -('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), -('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), -('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), -('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), -('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), -('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), -('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), -('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), -('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), -('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'), -('d','a','a','a411','xy1'),('d','a','a','b411','xy2'),('d','a','a','c411','xy3'),('d','a','a','d411','xy4'), -('d','a','b','e412','xy1'),('d','a','b','f412','xy2'),('d','a','b','g412','xy3'),('d','a','b','h412','xy4'), -('d','b','a','i421','xy1'),('d','b','a','j421','xy2'),('d','b','a','k421','xy3'),('d','b','a','l421','xy4'), -('d','b','b','m422','xy1'),('d','b','b','n422','xy2'),('d','b','b','o422','xy3'),('d','b','b','p422','xy4'), -('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), -('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), -('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), -('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), -('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), -('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), -('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), -('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), -('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), -('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), -('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), -('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'), -('d','a','a','a411','xy1'),('d','a','a','b411','xy2'),('d','a','a','c411','xy3'),('d','a','a','d411','xy4'), -('d','a','b','e412','xy1'),('d','a','b','f412','xy2'),('d','a','b','g412','xy3'),('d','a','b','h412','xy4'), -('d','b','a','i421','xy1'),('d','b','a','j421','xy2'),('d','b','a','k421','xy3'),('d','b','a','l421','xy4'), -('d','b','b','m422','xy1'),('d','b','b','n422','xy2'),('d','b','b','o422','xy3'),('d','b','b','p422','xy4'); - -create index idx_t1_0 on t1 (a1); -create index idx_t1_1 on t1 (a1,a2,b,c); -create index idx_t1_2 on t1 (a1,a2,b); -analyze table t1; - -# t2 is the same as t1, but with some NULLs in the MIN/MAX column, and -# one more nullable attribute - ---disable_warnings -drop table if exists t2; ---enable_warnings - -create table t2 ( - a1 char(64), a2 char(64) not null, b char(16), c char(16), d char(16), dummy char(248) default ' ' -); -insert into t2 select * from t1; -# add few rows with NULL's in the MIN/MAX column -insert into t2 (a1, a2, b, c, d) values -('a','a',NULL,'a777','xyz'),('a','a',NULL,'a888','xyz'),('a','a',NULL,'a999','xyz'), -('a','a','a',NULL,'xyz'), -('a','a','b',NULL,'xyz'), -('a','b','a',NULL,'xyz'), -('c','a',NULL,'c777','xyz'),('c','a',NULL,'c888','xyz'),('c','a',NULL,'c999','xyz'), -('d','b','b',NULL,'xyz'), -('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'), -('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'), -('a','a',NULL,'a777','xyz'),('a','a',NULL,'a888','xyz'),('a','a',NULL,'a999','xyz'), -('a','a','a',NULL,'xyz'), -('a','a','b',NULL,'xyz'), -('a','b','a',NULL,'xyz'), -('c','a',NULL,'c777','xyz'),('c','a',NULL,'c888','xyz'),('c','a',NULL,'c999','xyz'), -('d','b','b',NULL,'xyz'), -('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'),('e','a','a',NULL,'xyz'), -('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'),('e','a','b',NULL,'xyz'); - -create index idx_t2_0 on t2 (a1); -create index idx_t2_1 on t2 (a1,a2,b,c); -create index idx_t2_2 on t2 (a1,a2,b); -analyze table t2; - -# Table t3 is the same as t1, but with smaller column lenghts. -# This allows to test different branches of the cost computation procedure -# when the number of keys per block are less than the number of keys in the -# sub-groups formed by predicates over non-group attributes. - ---disable_warnings -drop table if exists t3; ---enable_warnings - -create table t3 ( - a1 char(1), a2 char(1), b char(1), c char(4) not null, d char(3), dummy char(1) default ' ' -); - -insert into t3 (a1, a2, b, c, d) values -('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), -('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), -('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), -('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), -('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), -('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), -('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), -('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), -('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), -('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), -('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), -('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'); -insert into t3 (a1, a2, b, c, d) values -('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), -('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), -('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), -('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), -('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), -('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), -('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), -('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), -('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), -('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), -('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), -('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'); -insert into t3 (a1, a2, b, c, d) values -('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), -('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), -('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), -('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), -('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), -('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), -('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), -('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), -('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), -('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), -('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), -('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'); -insert into t3 (a1, a2, b, c, d) values -('a','a','a','a111','xy1'),('a','a','a','b111','xy2'),('a','a','a','c111','xy3'),('a','a','a','d111','xy4'), -('a','a','b','e112','xy1'),('a','a','b','f112','xy2'),('a','a','b','g112','xy3'),('a','a','b','h112','xy4'), -('a','b','a','i121','xy1'),('a','b','a','j121','xy2'),('a','b','a','k121','xy3'),('a','b','a','l121','xy4'), -('a','b','b','m122','xy1'),('a','b','b','n122','xy2'),('a','b','b','o122','xy3'),('a','b','b','p122','xy4'), -('b','a','a','a211','xy1'),('b','a','a','b211','xy2'),('b','a','a','c211','xy3'),('b','a','a','d211','xy4'), -('b','a','b','e212','xy1'),('b','a','b','f212','xy2'),('b','a','b','g212','xy3'),('b','a','b','h212','xy4'), -('b','b','a','i221','xy1'),('b','b','a','j221','xy2'),('b','b','a','k221','xy3'),('b','b','a','l221','xy4'), -('b','b','b','m222','xy1'),('b','b','b','n222','xy2'),('b','b','b','o222','xy3'),('b','b','b','p222','xy4'), -('c','a','a','a311','xy1'),('c','a','a','b311','xy2'),('c','a','a','c311','xy3'),('c','a','a','d311','xy4'), -('c','a','b','e312','xy1'),('c','a','b','f312','xy2'),('c','a','b','g312','xy3'),('c','a','b','h312','xy4'), -('c','b','a','i321','xy1'),('c','b','a','j321','xy2'),('c','b','a','k321','xy3'),('c','b','a','l321','xy4'), -('c','b','b','m322','xy1'),('c','b','b','n322','xy2'),('c','b','b','o322','xy3'),('c','b','b','p322','xy4'); - -create index idx_t3_0 on t3 (a1); -create index idx_t3_1 on t3 (a1,a2,b,c); -create index idx_t3_2 on t3 (a1,a2,b); -analyze table t3; - - -# -# Queries without a WHERE clause. These queries do not use ranges. -# - -# plans -explain select a1, min(a2) from t1 group by a1; -explain select a1, max(a2) from t1 group by a1; -explain select a1, min(a2), max(a2) from t1 group by a1; -explain select a1, a2, b, min(c), max(c) from t1 group by a1,a2,b; -explain select a1,a2,b,max(c),min(c) from t1 group by a1,a2,b; ---replace_column 7 # 9 # -explain select a1,a2,b,max(c),min(c) from t2 group by a1,a2,b; -# Select fields in different order -explain select min(a2), a1, max(a2), min(a2), a1 from t1 group by a1; -explain select a1, b, min(c), a1, max(c), b, a2, max(c), max(c) from t1 group by a1, a2, b; -explain select min(a2) from t1 group by a1; -explain select a2, min(c), max(c) from t1 group by a1,a2,b; - -# queries -select a1, min(a2) from t1 group by a1; -select a1, max(a2) from t1 group by a1; -select a1, min(a2), max(a2) from t1 group by a1; -select a1, a2, b, min(c), max(c) from t1 group by a1,a2,b; -select a1,a2,b,max(c),min(c) from t1 group by a1,a2,b; -select a1,a2,b,max(c),min(c) from t2 group by a1,a2,b; -# Select fields in different order -select min(a2), a1, max(a2), min(a2), a1 from t1 group by a1; -select a1, b, min(c), a1, max(c), b, a2, max(c), max(c) from t1 group by a1, a2, b; -select min(a2) from t1 group by a1; -select a2, min(c), max(c) from t1 group by a1,a2,b; - -# -# Queries with a where clause -# - -# A) Preds only over the group 'A' attributes -# plans -explain select a1,a2,b,min(c),max(c) from t1 where a1 < 'd' group by a1,a2,b; -explain select a1,a2,b,min(c),max(c) from t1 where a1 >= 'b' group by a1,a2,b; -explain select a1,a2,b, max(c) from t1 where a1 >= 'c' or a1 < 'b' group by a1,a2,b; -explain select a1, max(c) from t1 where a1 >= 'c' or a1 < 'b' group by a1,a2,b; -explain select a1,a2,b,min(c),max(c) from t1 where a1 >= 'c' or a2 < 'b' group by a1,a2,b; -explain select a1,a2,b, max(c) from t1 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b; -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; -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; -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; - -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; - -select a1,a2,b,min(c),max(c) from t1 -where exists ( select * from t2 where t2.c > 'b1' ) -group by a1,a2,b; - -# correlated subselect that doesn't reference the min/max argument -explain select a1,a2,b,c,min(c), max(c) from t1 -where exists ( select * from t2 where t1.b > 'a' and t2.c > 'b1' ) -group by a1,a2,b; - -select a1,a2,b,c,min(c), max(c) from t1 -where exists ( select * from t2 where t1.b > 'a' and t2.c > 'b1' ) -group by a1,a2,b; - -SET @save_optimizer_switch=@@optimizer_switch; -SET optimizer_switch='semijoin_with_cache=off'; -explain select a1,a2,b,c,min(c), max(c) from t1 -where exists ( select * from t2 - where t2.c in (select c from t3 where t3.c > t1.b) and - t2.c > 'b1' ) -group by a1,a2,b; - -select a1,a2,b,c,min(c), max(c) from t1 -where exists ( select * from t2 - where t2.c in (select c from t3 where t3.c > t1.b) and - t2.c > 'b1' ) -group by a1,a2,b; -SET optimizer_switch=@save_optimizer_switch; - -# correlated subselect that references the min/max argument -explain select a1,a2,b,c,min(c), max(c) from t1 -where exists ( select * from t2 where t1.c > 'a' and t2.c > 'b1' ) -group by a1,a2,b; - -select a1,a2,b,c,min(c), max(c) from t1 -where exists ( select * from t2 where t1.c > 'a' and t2.c > 'b1' ) -group by a1,a2,b; - -SET @save_optimizer_switch=@@optimizer_switch; -SET optimizer_switch='semijoin_with_cache=off'; -explain select a1,a2,b,c,min(c), max(c) from t1 -where exists ( select * from t2 - where t2.c in (select c from t3 where t3.c > t1.c) and - t2.c > 'b1' ) -group by a1,a2,b; - -select a1,a2,b,c,min(c), max(c) from t1 -where exists ( select * from t2 - where t2.c in (select c from t3 where t3.c > t1.c) and - t2.c > 'b1' ) -group by a1,a2,b; -SET optimizer_switch=@save_optimizer_switch; - - -# 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 extended 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 extended 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 extended 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 extended select 98 + 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 98 + 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 extended 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 extended 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 extended 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 extended 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 extended select a1,a2,count(a2) from t1 where (a1 > 'a') group by a1,a2,b; -explain extended select sum(ord(a1)) from t1 where (a1 > 'a') group by a1,a2,b; - -# -# MDEV-4120 UNIQUE indexes should not be considered for loose index scan -# - -create table t4 as select distinct a1, a2, b, c from t1; -alter table t4 add unique index idxt4 (a1, a2, b, c); - ---echo # This is "superceded" by MDEV-7118, and Loose Index Scan is again an option: -explain -select a1, a2, b, min(c) from t4 group by a1, a2, b; -select a1, a2, b, min(c) from t4 group by a1, a2, b; - -drop table t4; - -# -# 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 -# -# Test case moved to group_min_max_innodb - - -# -# Bug #6142: a problem with the empty innodb table -# -# Test case moved to group_min_max_innodb - - -# -# Bug #9798: group by with rollup -# -# Test case moved to group_min_max_innodb - - -# -# Bug #13293 Wrongly used index results in endless loop. -# -# Test case moved to group_min_max_innodb - - -drop table t1,t2,t3; - -# -# 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 '', 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; - -# -# Bug #21007: NATURAL JOIN (any JOIN (2 x NATURAL JOIN)) crashes the server -# - -CREATE TABLE t1 (id1 INT, id2 INT); -CREATE TABLE t2 (id2 INT, id3 INT, id5 INT); -CREATE TABLE t3 (id3 INT, id4 INT); -CREATE TABLE t4 (id4 INT); -CREATE TABLE t5 (id5 INT, id6 INT); -CREATE TABLE t6 (id6 INT); - -INSERT INTO t1 VALUES(1,1); -INSERT INTO t2 VALUES(1,1,1); -INSERT INTO t3 VALUES(1,1); -INSERT INTO t4 VALUES(1); -INSERT INTO t5 VALUES(1,1); -INSERT INTO t6 VALUES(1); - -# original bug query -SELECT * FROM -t1 - NATURAL JOIN -(t2 JOIN (t3 NATURAL JOIN t4, t5 NATURAL JOIN t6) - ON (t3.id3 = t2.id3 AND t5.id5 = t2.id5)); - -# inner join swapped -SELECT * FROM -t1 - NATURAL JOIN -(((t3 NATURAL JOIN t4) join (t5 NATURAL JOIN t6) on t3.id4 = t5.id5) JOIN t2 - ON (t3.id3 = t2.id3 AND t5.id5 = t2.id5)); - -# one join less, no ON cond -SELECT * FROM t1 NATURAL JOIN ((t3 join (t5 NATURAL JOIN t6)) JOIN t2); - -# wrong error message: 'id2' - ambiguous column -SELECT * FROM -(t2 JOIN (t3 NATURAL JOIN t4, t5 NATURAL JOIN t6) - ON (t3.id3 = t2.id3 AND t5.id5 = t2.id5)) - NATURAL JOIN -t1; -SELECT * FROM -(t2 JOIN ((t3 NATURAL JOIN t4) join (t5 NATURAL JOIN t6))) - NATURAL JOIN -t1; - -DROP TABLE t1,t2,t3,t4,t5,t6; - -# -# Bug#22342: No results returned for query using max and group by -# -CREATE TABLE t1 (a int, b int, KEY (a,b), KEY b (b)); -INSERT INTO t1 VALUES (1,1),(1,2),(1,0),(1,3); - -explain SELECT MAX(b), a FROM t1 WHERE b < 2 AND a = 1 GROUP BY a; -SELECT MAX(b), a FROM t1 WHERE b < 2 AND a = 1 GROUP BY a; -SELECT MIN(b), a FROM t1 WHERE b > 1 AND a = 1 GROUP BY a; -CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a,b,c)); -INSERT INTO t2 SELECT a,b,b FROM t1; -explain SELECT MIN(c) FROM t2 WHERE b = 2 and a = 1 and c > 1 GROUP BY a; -SELECT MIN(c) FROM t2 WHERE b = 2 and a = 1 and c > 1 GROUP BY a; - -DROP TABLE t1,t2; - -# -# Bug#24156: Loose index scan not used with CREATE TABLE ...SELECT and similar statements -# - -CREATE TABLE t1 (a INT, b INT, INDEX (a,b)); -INSERT INTO t1 (a, b) VALUES (1,1), (1,2), (1,3), (1,4), (1,5), - (2,2), (2,3), (2,1), (3,1), (4,1), (4,2), (4,3), (4,4), (4,5), (4,6); -EXPLAIN SELECT max(b), a FROM t1 GROUP BY a; -FLUSH STATUS; -SELECT max(b), a FROM t1 GROUP BY a; -SHOW STATUS LIKE 'handler_read__e%'; -EXPLAIN SELECT max(b), a FROM t1 GROUP BY a; -FLUSH STATUS; -CREATE TABLE t2 SELECT max(b), a FROM t1 GROUP BY a; -SHOW STATUS LIKE 'handler_read__e%'; -FLUSH STATUS; -SELECT * FROM (SELECT max(b), a FROM t1 GROUP BY a) b; -SHOW STATUS LIKE 'handler_read__e%'; -FLUSH STATUS; -(SELECT max(b), a FROM t1 GROUP BY a) UNION - (SELECT max(b), a FROM t1 GROUP BY a); -SHOW STATUS LIKE 'handler_read__e%'; -EXPLAIN (SELECT max(b), a FROM t1 GROUP BY a) UNION - (SELECT max(b), a FROM t1 GROUP BY a); - -EXPLAIN SELECT (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2) x - FROM t1 AS t1_outer; -EXPLAIN SELECT 1 FROM t1 AS t1_outer WHERE EXISTS - (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2); -EXPLAIN SELECT 1 FROM t1 AS t1_outer WHERE - (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2) > 12; -EXPLAIN SELECT 1 FROM t1 AS t1_outer WHERE - a IN (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2); -EXPLAIN SELECT 1 FROM t1 AS t1_outer GROUP BY a HAVING - a > (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2); -EXPLAIN SELECT 1 FROM t1 AS t1_outer1 JOIN t1 AS t1_outer2 - ON t1_outer1.a = (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2) - AND t1_outer1.b = t1_outer2.b; -EXPLAIN SELECT (SELECT (SELECT max(b) FROM t1 GROUP BY a HAVING a < 2) x - FROM t1 AS t1_outer) x2 FROM t1 AS t1_outer2; - -CREATE TABLE t3 LIKE t1; -FLUSH STATUS; -INSERT INTO t3 SELECT a,MAX(b) FROM t1 GROUP BY a; -SHOW STATUS LIKE 'handler_read__e%'; -DELETE FROM t3; -FLUSH STATUS; -INSERT INTO t3 SELECT 1, (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) - FROM t1 LIMIT 1; -SHOW STATUS LIKE 'handler_read__e%'; -FLUSH STATUS; -DELETE FROM t3 WHERE (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) > 10000; -SHOW STATUS LIKE 'handler_read__e%'; -FLUSH STATUS; ---error ER_SUBQUERY_NO_1_ROW -DELETE FROM t3 WHERE (SELECT (SELECT MAX(b) FROM t1 GROUP BY a HAVING a < 2) x - FROM t1) > 10000; -SHOW STATUS LIKE 'handler_read__e%'; - -DROP TABLE t1,t2,t3; - -# -# Bug#25602: queries with DISTINCT and SQL_BIG_RESULT hint -# for which loose scan optimization is applied -# - -CREATE TABLE t1 (a int, INDEX idx(a)); -INSERT INTO t1 VALUES - (4), (2), (1), (2), (4), (2), (1), (4), - (4), (2), (1), (2), (2), (4), (1), (4); - -EXPLAIN SELECT DISTINCT(a) FROM t1; -SELECT DISTINCT(a) FROM t1; -EXPLAIN SELECT SQL_BIG_RESULT DISTINCT(a) FROM t1; -SELECT SQL_BIG_RESULT DISTINCT(a) FROM t1; - -DROP TABLE t1; - -# -# Bug #32268: Indexed queries give bogus MIN and MAX results -# - -CREATE TABLE t1 (a INT, b INT); -INSERT INTO t1 (a, b) VALUES (1,1), (1,2), (1,3); -INSERT INTO t1 SELECT a + 1, b FROM t1; -INSERT INTO t1 SELECT a + 2, b FROM t1; - -EXPLAIN -SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a DESC; -SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a DESC; - -CREATE INDEX break_it ON t1 (a, b); - -EXPLAIN -SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a; -SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a; - -EXPLAIN -SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a DESC; -SELECT a, MIN(b), MAX(b) FROM t1 GROUP BY a ORDER BY a DESC; - -EXPLAIN -SELECT a, MIN(b), MAX(b), AVG(b) FROM t1 GROUP BY a ORDER BY a DESC; -SELECT a, MIN(b), MAX(b), AVG(b) FROM t1 GROUP BY a ORDER BY a DESC; - -DROP TABLE t1; - -# -# Bug#38195: Incorrect handling of aggregate functions when loose index scan is -# used causes server crash. -# -create table t1 (a int, b int, key (a,b), key `index` (a,b)) engine=MyISAM; -insert into t1 (a,b) values -(0,0),(0,1),(0,2),(0,3),(0,4),(0,5),(0,6), - (0,7),(0,8),(0,9),(0,10),(0,11),(0,12),(0,13), -(1,0),(1,1),(1,2),(1,3),(1,4),(1,5),(1,6), - (1,7),(1,8),(1,9),(1,10),(1,11),(1,12),(1,13), -(2,0),(2,1),(2,2),(2,3),(2,4),(2,5),(2,6), - (2,7),(2,8),(2,9),(2,10),(2,11),(2,12),(2,13), -(3,0),(3,1),(3,2),(3,3),(3,4),(3,5),(3,6), - (3,7),(3,8),(3,9),(3,10),(3,11),(3,12),(3,13); -insert into t1 (a,b) select a, max(b)+1 from t1 where a = 0 group by a; -select * from t1; -explain extended select sql_buffer_result a, max(b)+1 from t1 where a = 0 group by a; -drop table t1; - - -# -# Bug #41610: key_infix_len can be overwritten causing some group by queries -# to return no rows -# - -CREATE TABLE t1 (a int, b int, c int, d int, - KEY foo (c,d,a,b), KEY bar (c,a,b,d)); - -INSERT INTO t1 VALUES (1, 1, 1, 1), (1, 1, 1, 2), (1, 1, 1, 3), (1, 1, 1, 4); -INSERT INTO t1 SELECT * FROM t1; -INSERT INTO t1 SELECT * FROM t1; -INSERT INTO t1 SELECT a,b,c+1,d FROM t1; - -#Should be non-empty -EXPLAIN SELECT DISTINCT c FROM t1 WHERE d=4; -SELECT DISTINCT c FROM t1 WHERE d=4; - -DROP TABLE t1; - ---echo # ---echo # Bug #45386: Wrong query result with MIN function in field list, ---echo # WHERE and GROUP BY clause ---echo # - -CREATE TABLE t (a INT, b INT, INDEX (a,b)); -INSERT INTO t VALUES (2,0), (2,0), (2,1), (2,1); -INSERT INTO t SELECT * FROM t; -INSERT INTO t SELECT * FROM t; - ---echo # test MIN ---echo #should use range with index for group by -EXPLAIN -SELECT a, MIN(b) FROM t WHERE b <> 0 GROUP BY a; ---echo #should return 1 row -SELECT a, MIN(b) FROM t WHERE b <> 0 GROUP BY a; - ---echo # test MAX ---echo #should use range with index for group by -EXPLAIN -SELECT a, MAX(b) FROM t WHERE b <> 1 GROUP BY a; ---echo #should return 1 row -SELECT a, MAX(b) FROM t WHERE b <> 1 GROUP BY a; - ---echo # test 3 ranges and use the middle one -INSERT INTO t SELECT a, 2 FROM t; - ---echo #should use range with index for group by -EXPLAIN -SELECT a, MAX(b) FROM t WHERE b > 0 AND b < 2 GROUP BY a; ---echo #should return 1 row -SELECT a, MAX(b) FROM t WHERE b > 0 AND b < 2 GROUP BY a; - -DROP TABLE t; - ---echo # ---echo # Bug #48472: Loose index scan inappropriately chosen for some WHERE ---echo # conditions ---echo # - -CREATE TABLE t (a INT, b INT, INDEX (a,b)); -INSERT INTO t VALUES (2,0), (2,0), (2,1), (2,1); -INSERT INTO t SELECT * FROM t; - -SELECT a, MAX(b) FROM t WHERE 0=b+0 GROUP BY a; - -DROP TABLE t; - ---echo End of 5.0 tests - ---echo # ---echo # Bug #46607: Assertion failed: (cond_type == Item::FUNC_ITEM) results in ---echo # server crash ---echo # - -CREATE TABLE t (a INT, b INT, INDEX (a,b)); -INSERT INTO t VALUES (2,0), (2,0), (2,1), (2,1); -INSERT INTO t SELECT * FROM t; - -SELECT a, MAX(b) FROM t WHERE b GROUP BY a; - -DROP TABLE t; - -# -# BUG#49902 - SELECT returns incorrect results -# -CREATE TABLE t1(a INT NOT NULL, b INT NOT NULL, KEY (b)); -INSERT INTO t1 VALUES(1,1),(2,1); -ANALYZE TABLE t1; -SELECT 1 AS c, b FROM t1 WHERE b IN (1,2) GROUP BY c, b; -SELECT a FROM t1 WHERE b=1; -DROP TABLE t1; - ---echo # ---echo # Bug#47762: Incorrect result from MIN() when WHERE tests NOT NULL column ---echo # for NULL ---echo # - ---echo ## Test for NULLs allowed -CREATE TABLE t1 ( a INT, KEY (a) ); -INSERT INTO t1 VALUES (1), (2), (3); ---source include/min_null_cond.inc -INSERT INTO t1 VALUES (NULL), (NULL); ---source include/min_null_cond.inc -DROP TABLE t1; - ---echo ## Test for NOT NULLs -CREATE TABLE t1 ( a INT NOT NULL PRIMARY KEY); -INSERT INTO t1 VALUES (1), (2), (3); ---echo # ---echo # NULL-safe operator test disabled for non-NULL indexed columns. ---echo # ---echo # See bugs ---echo # ---echo # - Bug#52173: Reading NULL value from non-NULL index gives ---echo # wrong result in embedded server ---echo # ---echo # - Bug#52174: Sometimes wrong plan when reading a MAX value from ---echo # non-NULL index ---echo # ---let $skip_null_safe_test= 1 ---source include/min_null_cond.inc -DROP TABLE t1; - ---echo # ---echo # Bug#53859: Valgrind: opt_sum_query(TABLE_LIST*, List<Item>&, Item*) at ---echo # opt_sum.cc:305 ---echo # -CREATE TABLE t1 ( a INT, KEY (a) ); -INSERT INTO t1 VALUES (1), (2), (3); - -SELECT MIN( a ) AS min_a -FROM t1 -WHERE a > 1 AND a IS NULL -ORDER BY min_a; - -DROP TABLE t1; - -# -# MDEV-729 lp:998028 - Server crashes on normal shutdown in closefrm after executing a query from MyISAM table -# -create table t1 (a int, b varchar(1), key(b,a)) engine=myisam; -insert t1 values (1,'a'),(2,'b'),(3,'c'),(4,'d'),(5,'e'),(6,'f'),(7,'g'),(8,'h'),(null,'i'); -select min(a), b from t1 where a=7 or b='z' group by b; -flush tables; -drop table t1; - ---echo # ---echo # LP BUG#888456 Wrong result with DISTINCT , ANY , subquery_cache=off , NOT NULL ---echo # - -CREATE TABLE t1 ( a int NOT NULL) ; -INSERT INTO t1 VALUES (28),(29),(9); - -CREATE TABLE t2 ( a int, KEY (a)) ; -INSERT INTO t2 VALUES (1),(1),(1),(4),(4),(5),(5),(8),(8),(9); - -explain select (select t2.a from t2 where t2.a >= t1.a group by t2.a) from t1; -select (select t2.a from t2 where t2.a >= t1.a group by t2.a) from t1; - -drop table t1, t2; - ---echo # ---echo # LP BUG#900375 Wrong result with derived_merge=ON, DISTINCT or GROUP BY, EXISTS ---echo # - -CREATE TABLE t1 ( a INT, b INT, KEY (b) ); -INSERT INTO t1 VALUES -(100,10),(101,11),(102,12),(103,13),(104,14), -(105,15),(106,16),(107,17),(108,18),(109,19); - -EXPLAIN -SELECT alias1.* FROM t1, (SELECT * FROM t1) AS alias1 -WHERE EXISTS ( SELECT DISTINCT b FROM t1 WHERE b <= alias1.a ) ; -SELECT alias1.* FROM t1, (SELECT * FROM t1) AS alias1 -WHERE EXISTS ( SELECT DISTINCT b FROM t1 WHERE b <= alias1.a ) ; - -EXPLAIN -SELECT alias1.* FROM t1, t1 AS alias1 -WHERE EXISTS ( SELECT DISTINCT b FROM t1 WHERE b <= alias1.a ) ; -SELECT alias1.* FROM t1, t1 AS alias1 -WHERE EXISTS ( SELECT DISTINCT b FROM t1 WHERE b <= alias1.a ) ; - -drop table t1; - ---echo End of 5.1 tests - ---echo # ---echo # MDEV-765 lp:825075 - Wrong result with GROUP BY + multipart key + MIN/MAX loose scan ---echo # - -CREATE TABLE t1 (a varchar(1), b varchar(1), KEY (b,a)); -INSERT INTO t1 VALUES -('0',NULL),('9',NULL),('8','c'),('4','d'),('7','d'),(NULL,'f'), -('7','f'),('8','g'),(NULL,'j'); - -explain -SELECT max(a) , b FROM t1 WHERE a IS NULL OR b = 'z' GROUP BY b; -SELECT max(a) , b FROM t1 WHERE a IS NULL OR b = 'z' GROUP BY b; - -explain -SELECT b, min(a) FROM t1 WHERE a = '7' OR b = 'z' GROUP BY b; -SELECT b, min(a) FROM t1 WHERE a = '7' OR b = 'z' GROUP BY b; - -explain -SELECT b, min(a) FROM t1 WHERE (a = b OR b = 'd' OR b is NULL) GROUP BY b; -SELECT b, min(a) FROM t1 WHERE (a = b OR b = 'd' OR b is NULL) GROUP BY b; - -explain -SELECT b, min(a) FROM t1 WHERE a > ('0' = b) AND b = 'z' GROUP BY b; -SELECT b, min(a) FROM t1 WHERE a > ('0' = b) AND b = 'z' GROUP BY b; - -explain -SELECT b, min(a) FROM t1 WHERE a > '0' AND (b < (a = '7')) GROUP BY b; -SELECT b, min(a) FROM t1 WHERE a > '0' AND (b < (a = '7')) GROUP BY b; - -explain -SELECT b, min(a) FROM t1 WHERE (a > '0' AND (a > '1' OR b = 'd')) GROUP BY b; -SELECT b, min(a) FROM t1 WHERE (a > '0' AND (a > '1' OR b = 'd')) GROUP BY b; - -drop table t1; - ---echo # ---echo # MDEV-4140 Wrong result with GROUP BY + multipart key + MIN/MAX loose scan and a subquery ---echo # - -CREATE TABLE t1 (a int, b int, KEY (b, a)) ; -INSERT INTO t1 VALUES (0,99),(9,99),(4,0),(7,0),(99,0),(7,0),(8,0),(99,0),(1,0); -INSERT INTO t1 VALUES (0,99),(9,99),(4,0),(7,0),(99,0),(7,0),(8,0),(99,0),(1,0); -CREATE TABLE t2 (c int) ; -INSERT INTO t2 VALUES (0),(1); - -EXPLAIN -SELECT MIN(a), b FROM t1 WHERE a > 0 GROUP BY b; -SELECT MIN(a), b FROM t1 WHERE a > 0 GROUP BY b; -EXPLAIN -SELECT MIN(a), b FROM t1 WHERE a > ( SELECT c FROM t2 WHERE c = 0 ) GROUP BY b; -SELECT MIN(a), b FROM t1 WHERE a > ( SELECT c FROM t2 WHERE c = 0 ) GROUP BY b; -# this test is for 5.5 to ensure that the subquery is expensive -EXPLAIN -SELECT MIN(a), b FROM t1 WHERE a > ( SELECT min(c) FROM t2, t1 t1a, t1 t1b WHERE c = 0 ) GROUP BY b; -SELECT MIN(a), b FROM t1 WHERE a > ( SELECT min(c) FROM t2, t1 t1a, t1 t1b WHERE c = 0 ) GROUP BY b; - -drop table t1, t2; - ---echo End of 5.3 tests - ---echo # ---echo # WL#3220 (Loose index scan for COUNT DISTINCT) ---echo # - -CREATE TABLE t1 (a INT, b INT, c INT, KEY (a,b)); -INSERT INTO t1 VALUES (1,1,1), (1,2,1), (1,3,1), (1,4,1); -INSERT INTO t1 SELECT a, b + 4, 1 FROM t1; -INSERT INTO t1 SELECT a + 1, b, 1 FROM t1; -CREATE TABLE t2 (a INT, b INT, c INT, d INT, e INT, f INT, KEY (a,b,c)); -INSERT INTO t2 VALUES (1,1,1,1,1,1), (1,2,1,1,1,1), (1,3,1,1,1,1), - (1,4,1,1,1,1); -INSERT INTO t2 SELECT a, b + 4, c,d,e,f FROM t2; -INSERT INTO t2 SELECT a + 1, b, c,d,e,f FROM t2; - -EXPLAIN SELECT COUNT(DISTINCT a) FROM t1; -SELECT COUNT(DISTINCT a) FROM t1; - -EXPLAIN SELECT COUNT(DISTINCT a,b) FROM t1; -SELECT COUNT(DISTINCT a,b) FROM t1; - -EXPLAIN SELECT COUNT(DISTINCT b,a) FROM t1; -SELECT COUNT(DISTINCT b,a) FROM t1; - -EXPLAIN SELECT COUNT(DISTINCT b) FROM t1; -SELECT COUNT(DISTINCT b) FROM t1; - -EXPLAIN SELECT COUNT(DISTINCT a) FROM t1 GROUP BY a; -SELECT COUNT(DISTINCT a) FROM t1 GROUP BY a; - -EXPLAIN SELECT COUNT(DISTINCT b) FROM t1 GROUP BY a; -SELECT COUNT(DISTINCT b) FROM t1 GROUP BY a; - -EXPLAIN SELECT COUNT(DISTINCT a) FROM t1 GROUP BY b; -SELECT COUNT(DISTINCT a) FROM t1 GROUP BY b; - -EXPLAIN SELECT DISTINCT COUNT(DISTINCT a) FROM t1; -SELECT DISTINCT COUNT(DISTINCT a) FROM t1; - -EXPLAIN SELECT COUNT(DISTINCT a, b + 0) FROM t1; -SELECT COUNT(DISTINCT a, b + 0) FROM t1; - -EXPLAIN SELECT COUNT(DISTINCT a) FROM t1 HAVING COUNT(DISTINCT b) < 10; -SELECT COUNT(DISTINCT a) FROM t1 HAVING COUNT(DISTINCT b) < 10; - -EXPLAIN SELECT COUNT(DISTINCT a) FROM t1 HAVING COUNT(DISTINCT c) < 10; -SELECT COUNT(DISTINCT a) FROM t1 HAVING COUNT(DISTINCT c) < 10; - -EXPLAIN SELECT 1 FROM t1 HAVING COUNT(DISTINCT a) < 10; -SELECT 1 FROM t1 HAVING COUNT(DISTINCT a) < 10; - -EXPLAIN SELECT 1 FROM t1 GROUP BY a HAVING COUNT(DISTINCT b) > 1; -SELECT 1 FROM t1 GROUP BY a HAVING COUNT(DISTINCT b) > 1; - -EXPLAIN SELECT COUNT(DISTINCT t1_1.a) FROM t1 t1_1, t1 t1_2 GROUP BY t1_1.a; -SELECT COUNT(DISTINCT t1_1.a) FROM t1 t1_1, t1 t1_2 GROUP BY t1_1.a; - -EXPLAIN SELECT COUNT(DISTINCT a), 12 FROM t1; -SELECT COUNT(DISTINCT a), 12 FROM t1; - -EXPLAIN SELECT COUNT(DISTINCT a, b, c) FROM t2; -SELECT COUNT(DISTINCT a, b, c) FROM t2; - -EXPLAIN SELECT COUNT(DISTINCT a), SUM(DISTINCT a), AVG(DISTINCT a) FROM t2; -SELECT COUNT(DISTINCT a), SUM(DISTINCT a), AVG(DISTINCT a) FROM t2; - -EXPLAIN SELECT COUNT(DISTINCT a), SUM(DISTINCT a), AVG(DISTINCT f) FROM t2; -SELECT COUNT(DISTINCT a), SUM(DISTINCT a), AVG(DISTINCT f) FROM t2; - -EXPLAIN SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, a) FROM t2; -SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, a) FROM t2; - -EXPLAIN SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, f) FROM t2; -SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, f) FROM t2; - -EXPLAIN SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, d) FROM t2; -SELECT COUNT(DISTINCT a, b), COUNT(DISTINCT b, d) FROM t2; - -EXPLAIN SELECT a, c, COUNT(DISTINCT c, a, b) FROM t2 GROUP BY a, b, c; -SELECT a, c, COUNT(DISTINCT c, a, b) FROM t2 GROUP BY a, b, c; - -EXPLAIN SELECT COUNT(DISTINCT c, a, b) FROM t2 - WHERE a > 5 AND b BETWEEN 10 AND 20 GROUP BY a, b, c; -SELECT COUNT(DISTINCT c, a, b) FROM t2 - WHERE a > 5 AND b BETWEEN 10 AND 20 GROUP BY a, b, c; - -EXPLAIN SELECT COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 WHERE a = 5 - GROUP BY b; -SELECT COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 WHERE a = 5 - GROUP BY b; - -EXPLAIN SELECT a, COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 GROUP BY a; -SELECT a, COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 GROUP BY a; - -EXPLAIN SELECT COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 GROUP BY a; -SELECT COUNT(DISTINCT b), SUM(DISTINCT b) FROM t2 GROUP BY a; - -EXPLAIN SELECT COUNT(DISTINCT a, b) FROM t2 WHERE c = 13 AND d = 42; -SELECT COUNT(DISTINCT a, b) FROM t2 WHERE c = 13 AND d = 42; - -EXPLAIN SELECT a, COUNT(DISTINCT a), SUM(DISTINCT a) FROM t2 - WHERE b = 13 AND c = 42 GROUP BY a; -SELECT a, COUNT(DISTINCT a), SUM(DISTINCT a) FROM t2 - WHERE b = 13 AND c = 42 GROUP BY a; - -# This query could have been resolved using loose index scan since the second -# part of count(..) is defined by a constant predicate -EXPLAIN SELECT COUNT(DISTINCT a, b), SUM(DISTINCT a) FROM t2 WHERE b = 42; -SELECT COUNT(DISTINCT a, b), SUM(DISTINCT a) FROM t2 WHERE b = 42; - -EXPLAIN SELECT SUM(DISTINCT a), MAX(b) FROM t2 GROUP BY a; -SELECT SUM(DISTINCT a), MAX(b) FROM t2 GROUP BY a; - -EXPLAIN SELECT 42 * (a + c + COUNT(DISTINCT c, a, b)) FROM t2 GROUP BY a, b, c; -SELECT 42 * (a + c + COUNT(DISTINCT c, a, b)) FROM t2 GROUP BY a, b, c; - -EXPLAIN SELECT (SUM(DISTINCT a) + MAX(b)) FROM t2 GROUP BY a; -SELECT (SUM(DISTINCT a) + MAX(b)) FROM t2 GROUP BY a; - -DROP TABLE t1,t2; - ---echo # end of WL#3220 tests - ---echo # ---echo # Bug#50539: Wrong result when loose index scan is used for an aggregate ---echo # function with distinct ---echo # -CREATE TABLE t1 ( - f1 int(11) NOT NULL DEFAULT '0', - f2 char(1) NOT NULL DEFAULT '', - KEY (f1,f2) -) ; -insert into t1 values(1,'A'),(1 , 'B'), (1, 'C'), (2, 'A'), -(3, 'A'), (3, 'B'), (3, 'C'), (3, 'D'); - -SELECT f1, COUNT(DISTINCT f2) FROM t1 GROUP BY f1; -explain SELECT f1, COUNT(DISTINCT f2) FROM t1 GROUP BY f1; - -drop table t1; ---echo # End of test#50539. - ---echo # ---echo # Bug#17217128 - BAD INTERACTION BETWEEN MIN/MAX AND ---echo # "HAVING SUM(DISTINCT)": WRONG RESULTS. ---echo # - -CREATE TABLE t (a INT, b INT, KEY(a,b)); -INSERT INTO t VALUES (1,1), (2,2), (3,3), (4,4), (1,0), (3,2), (4,5); -ANALYZE TABLE t; - -SELECT a, SUM(DISTINCT a), MIN(b) FROM t GROUP BY a; -EXPLAIN SELECT a, SUM(DISTINCT a), MIN(b) FROM t GROUP BY a; - -SELECT a, SUM(DISTINCT a), MAX(b) FROM t GROUP BY a; -EXPLAIN SELECT a, SUM(DISTINCT a), MAX(b) FROM t GROUP BY a; - -SELECT a, MAX(b) FROM t GROUP BY a HAVING SUM(DISTINCT a); -EXPLAIN SELECT a, MAX(b) FROM t GROUP BY a HAVING SUM(DISTINCT a); - -SELECT SUM(DISTINCT a), MIN(b), MAX(b) FROM t; -EXPLAIN SELECT SUM(DISTINCT a), MIN(b), MAX(b) FROM t; - -SELECT a, SUM(DISTINCT a), MIN(b), MAX(b) FROM t GROUP BY a; -EXPLAIN SELECT a, SUM(DISTINCT a), MIN(b), MAX(b) FROM t GROUP BY a; -DROP TABLE t; - ---echo # ---echo # MDEV-4219 A simple select query returns random data (upstream bug#68473) ---echo # - ---disable_warnings -drop table if exists faulty; ---enable_warnings - -# MySQL's test case - -CREATE TABLE faulty ( -a int(11) unsigned NOT NULL AUTO_INCREMENT, -b int(11) unsigned NOT NULL, -c datetime NOT NULL, -PRIMARY KEY (a), -UNIQUE KEY b_and_c (b,c) -); - -INSERT INTO faulty (b, c) VALUES -(1801, '2013-02-15 09:00:00'), -(1802, '2013-02-28 09:00:00'), -(1802, '2013-03-01 09:00:00'), -(5, '1990-02-15 09:00:00'), -(5, '2013-02-15 09:00:00'), -(5, '2009-02-15 17:00:00'); - -EXPLAIN -SELECT DISTINCT b, c FROM faulty WHERE b='1802' ORDER BY c; -SELECT DISTINCT b, c FROM faulty WHERE b='1802' ORDER BY c; - -drop table faulty; - -# MariaDB test case - -CREATE TABLE t1 (a INT, b INT); -INSERT INTO t1 (a, b) VALUES (1,1), (1,2), (1,3); -INSERT INTO t1 SELECT a + 1, b FROM t1; -INSERT INTO t1 SELECT a + 2, b FROM t1; - -CREATE INDEX break_it ON t1 (a, b); - -EXPLAIN -SELECT distinct a, b FROM t1 where a = '3' ORDER BY b; -SELECT distinct a, b FROM t1 where a = '3' ORDER BY b; - -drop table t1; - ---echo # ---echo # Start of 10.0 tests ---echo # - ---echo # ---echo # MDEV-6991 GROUP_MIN_MAX optimization is erroneously applied in some cases ---echo # -CREATE TABLE t1 (id INT NOT NULL, a VARCHAR(20)) ENGINE=MyISAM; -INSERT INTO t1 VALUES (1,'2001-01-01'); -INSERT INTO t1 VALUES (1,'2001-01-02'); -INSERT INTO t1 VALUES (1,'2001-01-03'); -INSERT INTO t1 VALUES (1,' 2001-01-04'); -INSERT INTO t1 VALUES (2,'2001-01-01'); -INSERT INTO t1 VALUES (2,'2001-01-02'); -INSERT INTO t1 VALUES (2,'2001-01-03'); -INSERT INTO t1 VALUES (2,' 2001-01-04'); -INSERT INTO t1 VALUES (3,'2001-01-01'); -INSERT INTO t1 VALUES (3,'2001-01-02'); -INSERT INTO t1 VALUES (3,'2001-01-03'); -INSERT INTO t1 VALUES (3,' 2001-01-04'); -INSERT INTO t1 VALUES (4,'2001-01-01'); -INSERT INTO t1 VALUES (4,'2001-01-02'); -INSERT INTO t1 VALUES (4,'2001-01-03'); -INSERT INTO t1 VALUES (4,' 2001-01-04'); -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=DATE'2001-01-04' GROUP BY id; -ALTER TABLE t1 ADD KEY(id,a); -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=DATE'2001-01-04' GROUP BY id; -DROP TABLE t1; - - ---echo # ---echo # End of 10.0 tests ---echo # - - ---echo # ---echo # Start of 10.1 tests ---echo # - ---echo # ---echo # MDEV-6990 GROUP_MIN_MAX optimization is not applied in some cases when it could ---echo # -CREATE TABLE t1 (id INT NOT NULL, a DATE, KEY(id,a)) ENGINE=MyISAM; -INSERT INTO t1 VALUES (1,'2001-01-01'); -INSERT INTO t1 VALUES (1,'2001-01-02'); -INSERT INTO t1 VALUES (1,'2001-01-03'); -INSERT INTO t1 VALUES (1,'2001-01-04'); -INSERT INTO t1 VALUES (2,'2001-01-01'); -INSERT INTO t1 VALUES (2,'2001-01-02'); -INSERT INTO t1 VALUES (2,'2001-01-03'); -INSERT INTO t1 VALUES (2,'2001-01-04'); -INSERT INTO t1 VALUES (3,'2001-01-01'); -INSERT INTO t1 VALUES (3,'2001-01-02'); -INSERT INTO t1 VALUES (3,'2001-01-03'); -INSERT INTO t1 VALUES (3,'2001-01-04'); -INSERT INTO t1 VALUES (4,'2001-01-01'); -INSERT INTO t1 VALUES (4,'2001-01-02'); -INSERT INTO t1 VALUES (4,'2001-01-03'); -INSERT INTO t1 VALUES (4,'2001-01-04'); -EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>='2001-01-04' GROUP BY id; -EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=20010104.0 GROUP BY id; -EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=20010104e0 GROUP BY id; -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>='2001-01-04' GROUP BY id; -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=20010104.0 GROUP BY id; -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=20010104e0 GROUP BY id; -DROP TABLE t1; - ---echo # ---echo # MDEV-8229 GROUP_MIN_MAX is erroneously applied for BETWEEN in some cases ---echo # -SET NAMES latin1; -CREATE TABLE t1 (id INT NOT NULL, a VARCHAR(20)) ENGINE=MyISAM; -INSERT INTO t1 VALUES (1,'2001-01-01'); -INSERT INTO t1 VALUES (1,'2001-01-02'); -INSERT INTO t1 VALUES (1,'2001-01-03'); -INSERT INTO t1 VALUES (1,' 2001-01-04'); -INSERT INTO t1 VALUES (2,'2001-01-01'); -INSERT INTO t1 VALUES (2,'2001-01-02'); -INSERT INTO t1 VALUES (2,'2001-01-03'); -INSERT INTO t1 VALUES (2,' 2001-01-04'); -INSERT INTO t1 VALUES (3,'2001-01-01'); -INSERT INTO t1 VALUES (3,'2001-01-02'); -INSERT INTO t1 VALUES (3,'2001-01-03'); -INSERT INTO t1 VALUES (3,' 2001-01-04'); -INSERT INTO t1 VALUES (4,'2001-01-01'); -INSERT INTO t1 VALUES (4,'2001-01-02'); -INSERT INTO t1 VALUES (4,'2001-01-03'); -INSERT INTO t1 VALUES (4,' 2001-01-04'); -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN ' 2001-01-04' AND '2001-01-05' GROUP BY id; -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND '2001-01-05' GROUP BY id; -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND DATE'2001-01-05' GROUP BY id; -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND '2001-01-05' GROUP BY id; -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND DATE'2001-01-05' GROUP BY id; -ALTER TABLE t1 ADD KEY(id,a); -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN ' 2001-01-04' AND '2001-01-05' GROUP BY id; -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND '2001-01-05' GROUP BY id; -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND DATE'2001-01-05' GROUP BY id; -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND '2001-01-05' GROUP BY id; -SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND DATE'2001-01-05' GROUP BY id; -EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN ' 2001-01-04' AND '2001-01-05' GROUP BY id; -EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND '2001-01-05' GROUP BY id; -EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND DATE'2001-01-05' GROUP BY id; -EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN DATE'2001-01-04' AND '2001-01-05' GROUP BY id; -EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a BETWEEN '2001-01-04' AND DATE'2001-01-05' GROUP BY id; -DROP TABLE t1; - ---echo # ---echo # MIN() optimization didn't work correctly with BETWEEN when using too ---echo # long strings. ---echo # - -create table t1 (a varchar(10), key (a)) engine=myisam; -insert into t1 values("bar"),("Cafe"); -explain select min(a) from t1 where a between "a" and "Cafe2"; -explain select min(a) from t1 where a between "a" and "Cafeeeeeeeeeeeeeeeeeeeeeeeeee"; -explain select min(a) from t1 where a between "abbbbbbbbbbbbbbbbbbbb" and "Cafe2"; -drop table t1; - ---echo # ---echo # End of 10.1 tests ---echo # |