Eljakim questions

Eljakim answers

• mySQL delete w/ join or subquery
• MySQL counting performance
• turn mysql select to delete statement - How do I? [duplicate]
• Check if a column is indexed - MySql
• Do I need to protect login?
• mysqltuner.pl on a windows 2008 server r2
• How do I select noncontiguous characters from a string of text in MySQL?
• Why CONCAT() does not default to default charset in MySQL?
• mysql forgets who is logged in: command denied to user ''@'%'
• How do I enable error reporting in PHP? [duplicate]