SQL Server SIGN() Function

The SQL Server (Transact-SQL) SIGN() function returns a value indicating the sign of the specified number. It returns the following:

• Returns -1, if the number is less than 0.
• Returns 0, if the number is equal to 0.
• Returns 1, if the number is greater than 0.

Syntax

SIGN(number)

Parameters

Return Value

Returns a value indicating the sign of the given number.

Example 1:

The example below shows the usage of SIGN() function.

SELECT SIGN(25);
Result: 1

SELECT SIGN(-25);
Result: -1

SELECT SIGN(0);
Result: 0

Example 2:

Consider a database table called Sample with the following records:

The statement given below can be used to get the sign of values of column x.

SELECT *, SIGN(x) AS SIGN_Value FROM Sample;

This will produce the result as shown below: