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Adjust innodb_mysql.result
This is a followup to vasil.dimov@oracle.com-20100816142329-yimenbuktd416z1a which improved the sampling algorithm. I have manually checked that the new values are actually the correct ones, for example: -rows 16 +rows 32 the number of rows returned by the query is 32.
This commit is contained in:
Vasil Dimov
parent
7f62ec7b38
commit
393aaa4c51
1 changed files with 19 additions and 19 deletions
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@ -889,13 +889,13 @@ EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
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id 1
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select_type SIMPLE
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table t1
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type range
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type index
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possible_keys bkey
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key bkey
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key_len 5
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key PRIMARY
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key_len 4
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ref NULL
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rows 16
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Extra Using where; Using index; Using filesort
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rows 32
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Extra Using where
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SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
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a b
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1 2
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@ -934,12 +934,12 @@ EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
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id 1
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select_type SIMPLE
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table t1
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type range
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type index
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possible_keys bkey
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key bkey
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key_len 5
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ref NULL
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rows 16
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rows 32
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Extra Using where; Using index
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SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
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a b
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@ -989,7 +989,7 @@ possible_keys bkey
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key bkey
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key_len 5
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ref const
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rows 8
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rows 16
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Extra Using where; Using index; Using filesort
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SELECT * FROM t2 WHERE b=1 ORDER BY a;
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a b c
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@ -1018,7 +1018,7 @@ possible_keys bkey
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key bkey
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key_len 10
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ref const,const
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rows 8
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rows 16
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Extra Using where; Using index
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SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
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a b c
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@ -1047,7 +1047,7 @@ possible_keys bkey
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key bkey
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key_len 10
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ref const,const
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rows 8
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rows 16
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Extra Using where; Using index
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SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
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a b c
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@ -1076,7 +1076,7 @@ possible_keys bkey
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key bkey
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key_len 10
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ref const,const
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rows 8
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rows 16
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Extra Using where; Using index
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SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
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a b c
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@ -1213,7 +1213,7 @@ possible_keys b
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key b
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key_len 5
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ref const
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rows 1
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rows 2
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Extra Using where; Using index
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SELECT * FROM t1 WHERE b=2 ORDER BY a ASC;
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a b
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@ -1228,7 +1228,7 @@ possible_keys b
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key b
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key_len 5
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ref const
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rows 1
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rows 2
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Extra Using where; Using index
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SELECT * FROM t1 WHERE b=2 ORDER BY a DESC;
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a b
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@ -1372,7 +1372,7 @@ INSERT INTO t1 (a,b,c) VALUES (1,1,1), (2,1,1), (3,1,1), (4,1,1);
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INSERT INTO t1 (a,b,c) SELECT a+4,b,c FROM t1;
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EXPLAIN SELECT a, b, c FROM t1 WHERE b = 1 ORDER BY a DESC LIMIT 5;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index t1_b PRIMARY 4 NULL 8 Using where
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1 SIMPLE t1 range t1_b t1_b 5 NULL 8 Using where
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SELECT a, b, c FROM t1 WHERE b = 1 ORDER BY a DESC LIMIT 5;
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a b c
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8 1 1
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@ -1735,7 +1735,7 @@ SELECT 1 FROM (SELECT COUNT(DISTINCT c1)
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FROM t1 WHERE c2 IN (1, 1) AND c3 = 2 GROUP BY c2) x;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY <derived2> system NULL NULL NULL NULL 1
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2 DERIVED t1 index c3,c2 c2 10 NULL 5
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2 DERIVED t1 ALL c3,c2 c3 5 5 Using filesort
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DROP TABLE t1;
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CREATE TABLE t1 (c1 REAL, c2 REAL, c3 REAL, KEY (c3), KEY (c2, c3))
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ENGINE=InnoDB;
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@ -1749,7 +1749,7 @@ SELECT 1 FROM (SELECT COUNT(DISTINCT c1)
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FROM t1 WHERE c2 IN (1, 1) AND c3 = 2 GROUP BY c2) x;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY <derived2> system NULL NULL NULL NULL 1
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2 DERIVED t1 index c3,c2 c2 18 NULL 5
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2 DERIVED t1 ALL c3,c2 c3 9 5 Using filesort
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DROP TABLE t1;
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CREATE TABLE t1 (c1 DECIMAL(12,2), c2 DECIMAL(12,2), c3 DECIMAL(12,2),
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KEY (c3), KEY (c2, c3))
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@ -1764,7 +1764,7 @@ SELECT 1 FROM (SELECT COUNT(DISTINCT c1)
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FROM t1 WHERE c2 IN (1, 1) AND c3 = 2 GROUP BY c2) x;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY <derived2> system NULL NULL NULL NULL 1
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2 DERIVED t1 index c3,c2 c2 14 NULL 5
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2 DERIVED t1 ALL c3,c2 c3 7 5 Using filesort
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DROP TABLE t1;
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End of 5.1 tests
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#
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@ -1871,7 +1871,7 @@ possible_keys b
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key b
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key_len 5
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ref NULL
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rows 3
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rows 5
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Extra Using where; Using index
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EXPLAIN SELECT c FROM bar WHERE c>2;;
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id 1
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@ -2536,7 +2536,7 @@ f1 f2 f3 f4
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EXPLAIN SELECT * FROM t1 WHERE f2 = 1 AND f4 = TRUE
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ORDER BY f1 DESC LIMIT 5;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 range f2,f4 f4 1 NULL 11 Using where
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1 SIMPLE t1 range f2,f4 f4 1 NULL 22 Using where
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DROP TABLE t1;
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#
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# Bug#54117 crash in thr_multi_unlock, temporary table
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