|= (Bitwise OR EQUALS) (Transact-SQL)
SQL Server 2012
Performs a bitwise logical OR operation between two specified integer values as translated to binary expressions within Transact-SQL statements, and sets a value to the result of the operation.
Returns the data type of the argument with the higher precedence. For more information, see Data Type Precedence (Transact-SQL).
For more information, see | (Bitwise OR) (Transact-SQL).