1
0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00

Merge moonbone.local:/work/tmp_merge-5.0-mysql

into  moonbone.local:/work/tmp_merge-5.1-opt-mysql
This commit is contained in:
evgen@moonbone.local
2006-08-29 18:58:50 +04:00
64 changed files with 1217 additions and 538 deletions

View File

@ -838,3 +838,61 @@ select a, hex(filler) from t1 where a not between 'b' and 'b';
a hex(filler)
a 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
drop table t1,t2,t3;
create table t1 (a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2 (a int, key(a));
insert into t2 select 2*(A.a + 10*(B.a + 10*C.a)) from t1 A, t1 B, t1 C;
set @a="select * from t2 force index (a) where a NOT IN(0";
select count(*) from (select @a:=concat(@a, ',', a) from t2 ) Z;
count(*)
1000
set @a=concat(@a, ')');
insert into t2 values (11),(13),(15);
set @b= concat("explain ", @a);
prepare stmt1 from @b;
execute stmt1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 index a a 5 NULL 1003 Using where; Using index
prepare stmt1 from @a;
execute stmt1;
a
11
13
15
drop table t1, t2;
CREATE TABLE t1 (
id int NOT NULL DEFAULT '0',
b int NOT NULL DEFAULT '0',
c int NOT NULL DEFAULT '0',
INDEX idx1(b,c), INDEX idx2(c));
INSERT INTO t1(id) VALUES (1), (2), (3), (4), (5), (6), (7), (8);
INSERT INTO t1(b,c) VALUES (3,4), (3,4);
SELECT * FROM t1 WHERE b<=3 AND 3<=c;
id b c
0 3 4
0 3 4
SELECT * FROM t1 WHERE 3 BETWEEN b AND c;
id b c
0 3 4
0 3 4
EXPLAIN SELECT * FROM t1 WHERE b<=3 AND 3<=c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using where
EXPLAIN SELECT * FROM t1 WHERE 3 BETWEEN b AND c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using where
SELECT * FROM t1 WHERE 0 < b OR 0 > c;
id b c
0 3 4
0 3 4
SELECT * FROM t1 WHERE 0 NOT BETWEEN b AND c;
id b c
0 3 4
0 3 4
EXPLAIN SELECT * FROM t1 WHERE 0 < b OR 0 > c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge idx1,idx2 idx1,idx2 4,4 NULL 4 Using sort_union(idx1,idx2); Using where
EXPLAIN SELECT * FROM t1 WHERE 0 NOT BETWEEN b AND c;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 index_merge idx1,idx2 idx1,idx2 4,4 NULL 4 Using sort_union(idx1,idx2); Using where
DROP TABLE t1;