SIGN function [Numeric]

Returns the sign of a number.

Syntax 
SIGN( numeric-expression )
Parameters

  • numeric-expression   The number for which the sign is to be returned.

Remarks

For negative numbers, the SIGN function returns -1.

For zero, the SIGN function returns 0.

For positive numbers, the SIGN function returns 1.

Standards and compatibility

  • SQL/2003   Vendor extension.

Example

The following statement returns the value -1

SELECT SIGN( -550 );
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