1
0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00

MDEV-15253: Default optimizer setting changes for MariaDB 10.4

use_stat_tables= PREFERABLY
optimizer_use_condition_selectivity= 4
This commit is contained in:
Varun Gupta
2018-05-31 15:51:59 +05:30
committed by Varun Gupta
parent a25ce5ab4b
commit 93c360e3a5
248 changed files with 3685 additions and 1747 deletions

View File

@@ -11,6 +11,7 @@ KEY n1_c1_n2 (n1,c1,n2)
INSERT INTO t1 VALUES (0, 2, 'a'), (1, 3, 'a');
ANALYZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
EXPLAIN SELECT t1.n1 FROM t1, (SELECT n1, n2 FROM t1 WHERE c1 = 'a' GROUP BY n1) as t
WHERE t.n1 = t1.n1 AND t.n2 = t1.n2 AND c1 = 'a' GROUP BY n1;