Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

I need to search about twenty columns for given a string with wildcards. The query essentially looks like this: SELECT * FROM `the_table` WHERE ...

So, you want to iterate through millions of table rows coming as a result of some MySQL select query because you want to do your thingie with them, but alas!, your lovely database admin doesn't like ...

The SELECT _ is often called “select star” or “select all” since it selects data from all columns of the table. In practice, you should use the SELECT _ for the ad-hoc queries only. If you embed the ...