问题
What are IN and OUT parameter in SQL Server?
回答1:
IN Parameters - parameters that pass data TO a stored Procedure
OUT Parameters - parameters that are used to RETURN data FROM a stored procedure
Refer MSDN for more details on procedures with IN and OUT params and how to use them
Examples of how IN/OUT are used with TSQL can be found here: SQL Server Stored Procedure Basics
来源：https://stackoverflow.com/questions/4116912/what-are-in-and-out-parameter-in-sql-server