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| author | unknown <msvensson@neptunus.(none)> | 2005-04-12 12:04:43 +0200 |
|---|---|---|
| committer | unknown <msvensson@neptunus.(none)> | 2005-04-12 12:04:43 +0200 |
| commit | 5b5a12395ccbb72e8a63235f825b6aa45abab1ba (patch) | |
| tree | 751fb7de42fd3babd6d472d41ae5178840e7c01d /mysql-test/r | |
| parent | e997201180a30f5f5652c2ad2ec51992986248f6 (diff) | |
| download | mariadb-git-5b5a12395ccbb72e8a63235f825b6aa45abab1ba.tar.gz | |
BUG#8924 'Explain' shows different strategy
- If number of records in table is 4, the calculated cost for using "index" and "range" become so close so that any rounding errors becomes visible.
- Added one more record to the tables for heap test and expoect "range" to be selected
- Decrease number of records in t1 for range and expect "index" to be choosen.
mysql-test/r/heap.result:
Add one more record to table t1 and expect explain to use "range"
mysql-test/r/heap_btree.result:
Add one more record to table t1 and expect explain to use "range"
mysql-test/r/heap_hash.result:
Add one more record to table t1 and expect explain to use "range"
mysql-test/r/range.result:
Update results
mysql-test/t/heap.test:
Add one more record to table t1 and expect explain to use "range"
mysql-test/t/heap_btree.test:
Add one more record to table t1 and expect explain to use "range"
mysql-test/t/heap_hash.test:
Add one more record to table t1 in order for optimizer to select use of "range" deterministic
mysql-test/t/range.test:
Remove one record from table t1 to avoid that cost for "index" and "range" are so close that rounding error become visible.
Diffstat (limited to 'mysql-test/r')
| -rw-r--r-- | mysql-test/r/heap.result | 4 | ||||
| -rw-r--r-- | mysql-test/r/heap_btree.result | 4 | ||||
| -rw-r--r-- | mysql-test/r/heap_hash.result | 4 | ||||
| -rw-r--r-- | mysql-test/r/range.result | 6 |
4 files changed, 9 insertions, 9 deletions
diff --git a/mysql-test/r/heap.result b/mysql-test/r/heap.result index 631bd8c713c..37214e12d63 100644 --- a/mysql-test/r/heap.result +++ b/mysql-test/r/heap.result @@ -40,7 +40,7 @@ a b 4 4 drop table t1; create table t1 (a int not null) engine=heap; -insert into t1 values (869751),(736494),(226312),(802616); +insert into t1 values (869751),(736494),(226312),(802616),(728912); select * from t1 where a > 736494; a 869751 @@ -66,7 +66,7 @@ a alter table t1 engine=myisam; explain select * from t1 where a in (869751,736494,226312,802616); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index uniq_id uniq_id 4 NULL 4 Using where; Using index +1 SIMPLE t1 range uniq_id uniq_id 4 NULL 4 Using where; Using index drop table t1; create table t1 (x int not null, y int not null, key x (x), unique y (y)) engine=heap; diff --git a/mysql-test/r/heap_btree.result b/mysql-test/r/heap_btree.result index 8f9349ce316..374d2c63632 100644 --- a/mysql-test/r/heap_btree.result +++ b/mysql-test/r/heap_btree.result @@ -40,7 +40,7 @@ a b 4 4 drop table t1; create table t1 (a int not null) engine=heap; -insert into t1 values (869751),(736494),(226312),(802616); +insert into t1 values (869751),(736494),(226312),(802616),(728912); select * from t1 where a > 736494; a 869751 @@ -66,7 +66,7 @@ a alter table t1 engine=myisam; explain select * from t1 where a in (869751,736494,226312,802616); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index uniq_id uniq_id 4 NULL 4 Using where; Using index +1 SIMPLE t1 range uniq_id uniq_id 4 NULL 4 Using where; Using index drop table t1; create table t1 (x int not null, y int not null, key x using BTREE (x,y), unique y using BTREE (y)) engine=heap; diff --git a/mysql-test/r/heap_hash.result b/mysql-test/r/heap_hash.result index 1e6eb866fd6..9720fe4843a 100644 --- a/mysql-test/r/heap_hash.result +++ b/mysql-test/r/heap_hash.result @@ -40,7 +40,7 @@ a b 4 4 drop table t1; create table t1 (a int not null) engine=heap; -insert into t1 values (869751),(736494),(226312),(802616); +insert into t1 values (869751),(736494),(226312),(802616),(728912); select * from t1 where a > 736494; a 869751 @@ -66,7 +66,7 @@ a alter table t1 engine=myisam; explain select * from t1 where a in (869751,736494,226312,802616); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index uniq_id uniq_id 4 NULL 4 Using where; Using index +1 SIMPLE t1 range uniq_id uniq_id 4 NULL 4 Using where; Using index drop table t1; create table t1 (x int not null, y int not null, key x using HASH (x), unique y using HASH (y)) engine=heap; diff --git a/mysql-test/r/range.result b/mysql-test/r/range.result index 8a1d80e9f79..d98ed90e158 100644 --- a/mysql-test/r/range.result +++ b/mysql-test/r/range.result @@ -250,18 +250,18 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index x x 5 NULL 9 Using where; Using index drop table t1; CREATE TABLE t1 (key1 int(11) NOT NULL default '0', KEY i1 (key1)); -INSERT INTO t1 VALUES (0),(0),(1),(1); +INSERT INTO t1 VALUES (0),(1),(1); CREATE TABLE t2 (keya int(11) NOT NULL default '0', KEY j1 (keya)); INSERT INTO t2 VALUES (0),(0),(1),(1),(2),(2); explain select * from t1, t2 where (t1.key1 <t2.keya + 1) and t2.keya=3; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ref j1 j1 4 const 1 Using index -1 SIMPLE t1 index i1 i1 4 NULL 4 Using where; Using index +1 SIMPLE t1 index i1 i1 4 NULL 3 Using where; Using index explain select * from t1 force index(i1), t2 force index(j1) where (t1.key1 <t2.keya + 1) and t2.keya=3; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ref j1 j1 4 const 1 Using index -1 SIMPLE t1 index i1 i1 4 NULL 4 Using where; Using index +1 SIMPLE t1 index i1 i1 4 NULL 3 Using where; Using index DROP TABLE t1,t2; CREATE TABLE t1 ( a int(11) default NULL, |