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MDEV-17255: New optimizer defaults and ANALYZE TABLE

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Added to new values to the server variable use_stat_tables.
The values are COMPLEMENTARY_FOR_QUERIES and PREFERABLY_FOR_QUERIES.
Both these values don't allow to collect EITS for queries like
    analyze table t1;
To collect EITS we would need to use the syntax with persistent like
   analyze table t1 persistent for columns (col1,col2...) index (idx1, idx2...) / ALL

Changing the default value from NEVER to PREFERABLY_FOR_QUERIES.
This commit is contained in:
Varun Gupta
2018-12-09 13:25:27 +05:30
parent 93c360e3a5
commit 9207a838ed
12 changed files with 199 additions and 16 deletions
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2
mysql-test/suite/sys_vars/r/use_stat_tables_basic.result
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@ -10,7 +10,7 @@ SET @@global.use_stat_tables = 2;
SET @@global.use_stat_tables = DEFAULT;
SELECT @@global.use_stat_tables;
@@global.use_stat_tables
PREFERABLY
PREFERABLY_FOR_QUERIES
SET @@global.use_stat_tables = 0;
SELECT @@global.use_stat_tables;
@@global.use_stat_tables