[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] [Z] natural joins navigator objects (JavaScript) 2nd nested queries EXISTS clause IN clause in FROM clauses networking PEAR packages newline characters in PHP scripts newUser( ) function (PHP) normalization not (^) operator (regular expressions) NOT BETWEEN operator not equals (!=) operator NOT NULL modifier now( ) function (MySQL) NULL-safe equality comparison operator (<=>) nulls number system conversions |