This document describes various mathematical functions in MySQL including ABS(), ACOS(), ASIN(), ATAN(), AVG(), CEIL(), COS(), COT(), COUNT(), DEGREES(), DIV(), EXP(), FLOOR(), GREATEST(), LEAST(), LN(), LOG(), LOG10(), LOG2(), MAX(), MIN(), MOD(), PI(), POW(), ROUND(), RAND(), SIGN(), SIN(), SQRT(), SUM(), TAN(), TRUNCATE() and RADIANS(). Each function is described, including its use and syntax.