…CHECKS=0 to disable enforcement of RI when the overhead is too high.  But if you later restore enforcement, MySQL does not…null.  From that information, we can generate an exclusion-join query for each foreign key relationship: mysql> SELECT CONCAT( ‘SELECT…

…check that it parses by running the SELECT portion, adding LIMIT 0 to the SELECT part of the query…, as stored in the data dictionary: mysql> select * from flexviews…not take long to refresh: mysql> call flexviews.refresh( -> flexviews.get_id(‘demo’, -> ‘dashboard_customer_sales’),’BOTH’,NULL); Query…

…In Percona Server you can do better as you can query temporary tables too: mysql> select…in set (0.00 sec) You can even go deeper to check which sessions have created which temporary tables (both in memory and not): mysql> select… CREATE_TIME: NULL UPDATE_TIME: NULL *************************** 2. row …

…SELECT * FROM TBL WHERE hash=crc32(‘string’) AND string=’string’ The other thing you need to consider is string comparison in MySQL…not null, PRIMARY KEY(id1,id2), KEY K(id2)) engine=INNODB; when table has to be traversed in both directions for different queries…