CRISHK Corporation questions

• What's the difference between HAVING and WHERE in MySQL Query?
• HTML Base URL and links
• How to select mysql rows in the order of IN clause
• There is a way to use CLASS_EXISTS and __autoload without CRASH the script?
• How to SHOW COLUMNS from a SELECT query (rather than a table)?
• how to apply css rule to the previous and the next element in HTML?
• What's the difference between : 1. (ajaxStart and ajaxSend) and 2. (ajaxStop and ajaxComplete)?
• Why is the hash part of the URL not available on the server side?
• What's the .apply jQuery function?

CRISHK Corporation answers