Transact-SQL Reference
+ (Positive)
A unary operator that returns the positive value of a numeric expression (a unary operator).
Syntax
+ numeric_expression
Arguments
numeric_expression
Is any valid Microsoft® SQL Server™ expression of any of the data types in the numeric data type category except the datetime or smalldatetime data types.
Result Types
Returns the data type of numeric_expression, except that an unsigned tinyint expression is promoted to a smallint result.
Examples
This example sets a variable to a positive value.
DECLARE @MyNumber decimal(10,2)
SET @MyNumber = +123.45