# Sign

Sign() returns 1, 0 or -1 depending on whether x is a positive number, 0, or a negative number.

Syntax:

Sign(x)

Return data type: numeric

Limitations:

If no numeric value is found, NULL is returned.

Examples and results:

* Sign( 66 ): returns 1
* Sign( 0 ): returns 0
* Sign( - 234 ): returns -1