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] names, tables NATURAL JOIN keyword, SELECT statement natural joins negating, conditions in queries normalization, database relationships NOT IN operators NOT NULL constraint, tables NOT operator, WHERE clause NOW( ) function NULL constraint, tables NULL values numeric operators strings null values, columns NULLIF( ) function numbers, conversion from string values numeric functions complete listing of (MySQL.com) mathematical random numbers rounding numbers CEILING( ) FLOOR( ) ROUND( ) TRUNCATE( ) trigonometric ACOS( ) ASIN( ) ATAN( ) COS( ) DEGREES( ) RADIANS( ) SIN( ) TAN( ) numeric operators arithmetic calculated columns NULL values |