Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] ! (NOT) operator != operator 2nd # (number sign) 2nd $_ variable % (percent sign) 2nd 3rd 4th 5th % operator && (AND) operator 2nd () parenthesis 2nd 3rd * (asterisk) * operator 2nd * wildcard character 2nd 3rd + character + operator 2nd , (comma) - character - operator 2nd / (forward slash) / operator 2nd console option ' (apostrophe) 2nd 3rd 4th 5th ' (quote marks) as escape character 2nd escaping single in queries Magic Quotes strings and 2nd text and " (quotation marks) as escape character 2nd date/time values Magic Quotes numbers and 2nd 3rd stored routines and strings and "" character 1NF (First Normal Form) 2nd 2NF (Second Normal Form) 3NF (Third Normal Form) ; (semicolon) MySQL 2nd 3rd 4th 5th Perl 2nd PHP 2nd SQL commands 2nd 3rd stored routines < character 2nd < operator 2nd 3rd <= operator 2nd = operator 2nd > character 2nd > operator 2nd 3rd >= operator 2nd @ construct 2nd @ARGV array [ ] (brackets) 2nd 3rd \ (backslash) 2nd 3rd 4th 5th \% (percentage) escape character 2nd \_ escape character 2nd \G terminator 2nd 3rd ^ (OR NOT) operator _ (underscore) 2nd 3rd _ wildcard character || (OR) operator 2nd ~ (tilde) ~ character |