SIGN (SSIS Expression)
Applies to: 
SQL Server
SSIS Integration Runtime in Azure Data Factory
Returns the positive (+1), negative (-1), or zero (0) sign of a numeric expression.
Syntax
SIGN(numeric_expression)
Arguments
numeric_expression
Is a valid signed numeric expression. For more information, see Integration Services Data Types.
Result Types
DT_I4
Remarks
SIGN returns a null result if the argument is null.
Expression Examples
This example returns the sign of a numeric literal. The return result is -1.
SIGN(-123.45)
This example returns the sign of the result of subtracting the StandardCost column from the DealerPrice column.
SIGN(DealerPrice - StandardCost)