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Mathematical Functions (Transact-SQL)

The following scalar functions perform a calculation, usually based on input values that are provided as arguments, and return a numeric value:

ABS

DEGREES

RAND

ACOS

EXP

ROUND

ASIN

FLOOR

SIGN

ATAN

LOG

SIN

ATN2

LOG10

SQRT

CEILING

PI

SQUARE

COS

POWER

TAN

COT

RADIANS

 

Note

Arithmetic functions, such as ABS, CEILING, DEGREES, FLOOR, POWER, RADIANS, and SIGN, return a value having the same data type as the input value. Trigonometric and other functions, including EXP, LOG, LOG10, SQUARE, and SQRT, cast their input values to float and return a float value.

All mathematical functions, except for RAND, are deterministic functions. This means they return the same results each time they are called with a specific set of input values. RAND is deterministic only when a seed parameter is specified. For more information about function determinism, see Deterministic and Nondeterministic Functions.