+= (Add EQUALS) (Transact-SQL)


THIS TOPIC APPLIES TO: yesSQL Server (starting with 2008)yesAzure SQL DatabaseyesAzure SQL Data Warehouse yesParallel Data Warehouse

Adds two numbers and sets a value to the result of the operation. For example, if a variable @x equals 35, then @x += 2 takes the original value of @x, add 2 and sets @x to that new value (37).

Topic link icon Transact-SQL Syntax Conventions

-- Syntax for SQL Server, Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse  
expression += expression  

Is any valid expression of any data type in the numeric category except the bit data type.

Returns the data type of the argument with the higher precedence. For more information, see Data Type Precedence (Transact-SQL).

For more information, see + (Add) (Transact-SQL).

Compound Operators (Transact-SQL)
Expressions (Transact-SQL)
Operators (Transact-SQL)
+= (String Concatenation) (Transact-SQL)

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