1. Using MyISAM rather than InnoDB MySQL has a number of database engines, but you’re most likely to encounter MyISAM and InnoDB. MyISAM is used by default. However, unless you’re creating a very simple or experimental database, it’s almost certainly the wrong choice! MyISAM doesn’t support foreign key constraints or transactions, which are essential for […]
If you are working on a big mysql query and want to get the mysql query as email when it finishes use the below trick. Go to mysql command:Set pager directive: mysql> pager mail -s “subject” emailme@domain.comPAGER set to ‘mail’ -s “subject” emailme@domain.com The trick uses pager directive to redirect the query output result to […]
To Get Data Base Size in MB and Free Space in MBSELECT table_schema “dbName”, sum( data_length + index_length ) / 1024 / 1024 “Data Base Size in MB”, sum( data_free )/ 1024 / 1024 “Free Space in MB”FROM information_schema.TABLESGROUP BY table_schema ; To Get Size in GB: SELECT sum(round(((data_length + index_length) / 1024 […]
