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Merge.

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This commit is contained in:
Igor Babaev
2011-11-12 03:57:46 -08:00
parent 7ab789ef33 28b2eaa81a
commit db0aed9348
4 changed files with 119 additions and 12 deletions
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37
mysql-test/r/range_vs_index_merge.result
View File

@ -1377,4 +1377,41 @@ SELECT * FROM t1,t2,t3
WHERE (t2.f3 = 1 OR t3.f1=t2.f1) AND t3.f1 <> t2.f2 AND t3.f2 = t2.f4;
f1 f1 f2 f3 f4 f1 f2
DROP TABLE t1,t2,t3;
CREATE TABLE t1 (
a int, b int, c int, d int,
PRIMARY KEY(b), INDEX idx1(d), INDEX idx2(d,b,c)
);
INSERT INTO t1 VALUES
(0,58,7,7),(0,63,2,0),(0,64,186,8),(0,65,1,-2), (0,71,190,-3),
(0,72,321,-7),(0,73,0,3),(0,74,5,25),(0,75,5,3);
SET SESSION optimizer_switch='index_merge_sort_union=off';
EXPLAIN
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY,idx1,idx2 NULL NULL NULL 9 Using where
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
a b c d
0 58 7 7
0 64 186 8
0 73 0 3
0 74 5 25
0 75 5 3
SET SESSION optimizer_switch='index_merge_sort_union=on';
EXPLAIN
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY,idx1,idx2 NULL NULL NULL 9 Using where
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
a b c d
0 58 7 7
0 64 186 8
0 73 0 3
0 74 5 25
0 75 5 3
SET SESSION optimizer_switch=DEFAULT;
DROP TABLE t1;
set session optimizer_switch='index_merge_sort_intersection=default';

37
mysql-test/r/range_vs_index_merge_innodb.result
View File

@ -1378,5 +1378,42 @@ SELECT * FROM t1,t2,t3
WHERE (t2.f3 = 1 OR t3.f1=t2.f1) AND t3.f1 <> t2.f2 AND t3.f2 = t2.f4;
f1 f1 f2 f3 f4 f1 f2
DROP TABLE t1,t2,t3;
CREATE TABLE t1 (
a int, b int, c int, d int,
PRIMARY KEY(b), INDEX idx1(d), INDEX idx2(d,b,c)
);
INSERT INTO t1 VALUES
(0,58,7,7),(0,63,2,0),(0,64,186,8),(0,65,1,-2), (0,71,190,-3),
(0,72,321,-7),(0,73,0,3),(0,74,5,25),(0,75,5,3);
SET SESSION optimizer_switch='index_merge_sort_union=off';
EXPLAIN
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY,idx1,idx2 NULL NULL NULL 9 Using where
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
a b c d
0 58 7 7
0 64 186 8
0 73 0 3
0 74 5 25
0 75 5 3
SET SESSION optimizer_switch='index_merge_sort_union=on';
EXPLAIN
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL PRIMARY,idx1,idx2 NULL NULL NULL 9 Using where
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
a b c d
0 58 7 7
0 64 186 8
0 73 0 3
0 74 5 25
0 75 5 3
SET SESSION optimizer_switch=DEFAULT;
DROP TABLE t1;
set session optimizer_switch='index_merge_sort_intersection=default';
SET SESSION STORAGE_ENGINE=DEFAULT;

29
mysql-test/t/range_vs_index_merge.test
View File

@ -1029,5 +1029,34 @@ SELECT * FROM t1,t2,t3
DROP TABLE t1,t2,t3;
#
# LP bug #823301: index merge union with prossible index scan
#
#
CREATE TABLE t1 (
a int, b int, c int, d int,
PRIMARY KEY(b), INDEX idx1(d), INDEX idx2(d,b,c)
);
INSERT INTO t1 VALUES
(0,58,7,7),(0,63,2,0),(0,64,186,8),(0,65,1,-2), (0,71,190,-3),
(0,72,321,-7),(0,73,0,3),(0,74,5,25),(0,75,5,3);
SET SESSION optimizer_switch='index_merge_sort_union=off';
EXPLAIN
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
SET SESSION optimizer_switch='index_merge_sort_union=on';
EXPLAIN
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
SELECT * FROM t1
WHERE t1.b>7 AND t1.d>1 AND t1.d<>8 OR t1.d>=7 AND t1.d<8 OR t1.d>7;
SET SESSION optimizer_switch=DEFAULT;
DROP TABLE t1;
#the following command must be the last one in the file
set session optimizer_switch='index_merge_sort_intersection=default';