diff options
| author | unknown <kostja@oak.local> | 2003-09-15 22:21:39 +0400 |
|---|---|---|
| committer | unknown <kostja@oak.local> | 2003-09-15 22:21:39 +0400 |
| commit | db03c7e89f6ff78f04bbab2fdc3b136525fdb8e3 (patch) | |
| tree | e525d94eb1ae909e6f88230278d3c4814cbc939d /mysql-test/r/distinct.result | |
| parent | cdbc2fe43a0d9d19bdaec304d841fe45e3e91551 (diff) | |
| download | mariadb-git-db03c7e89f6ff78f04bbab2fdc3b136525fdb8e3.tar.gz | |
Fixed bug in the optimiser for FULL TABLE SCAN case:
to estimate correctly cost of full table scan we should take into
account rows read and skipped on each iteration.
mysql-test/r/distinct.result:
Fixed test suite: now full scan is used
less often
mysql-test/r/join_outer.result:
Fixed test suite: now full scan is used
less often
mysql-test/r/select_safe.result:
Fixed test suite: now full scan is used
less often
Diffstat (limited to 'mysql-test/r/distinct.result')
| -rw-r--r-- | mysql-test/r/distinct.result | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mysql-test/r/distinct.result b/mysql-test/r/distinct.result index 1dbccb65748..da0c6a5eb72 100644 --- a/mysql-test/r/distinct.result +++ b/mysql-test/r/distinct.result @@ -173,9 +173,9 @@ INSERT INTO t2 values (1),(2),(3); INSERT INTO t3 VALUES (1,'1'),(2,'2'),(1,'1'),(2,'2'); explain SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a; table type possible_keys key key_len ref rows Extra -t3 index a a 5 NULL 6 Using index; Using temporary -t2 index a a 4 NULL 5 Using index; Distinct -t1 eq_ref PRIMARY PRIMARY 4 t2.a 1 Using where; Distinct +t2 index a a 4 NULL 5 Using index; Using temporary +t1 eq_ref PRIMARY PRIMARY 4 t2.a 1 +t3 index a a 5 NULL 5 Using where; Using index SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a; a 1 |