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SQL Server - Table-Valued Parameters
Table-valued parameters are a new parameter type introduced in SQL Server 2008. With the help of table-valued parameters, you can send multiple rows of data to a stored procedure or function, without creating a temporary table or many parameters.
Steps to create Table-Valued Parameters
Create a table type and define the table structure.
Declare a stored procedure or function that has a parameter of the table type.
Declare a variable of the table type, and reference the table type.
Fill the table variable by using an INSERT statement.
Now you can pass the variable to a procedure or function.
Now let ‘s try to understand with example
Create a table as below
USE testdb Go CREATE TABLE Users ( UserID INT, UsertName VARCHAR(255) ) GO
1 Create a table type and define the table structure
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CREATE TYPE UserType AS TABLE ( UserId INT, UserName VARCHAR(255) ) GO
2 Declare a stored procedure or function that has a parameter of the table type
CREATE PROCEDURE InsUser @InsUser UserType READONLY AS INSERT INTO Users(UserID,UsertName) SELECT * FROM @InsUser GO
3 Declare a variable of the table type, and reference the table type
DECLARE @User AS UserType
4 Fill the table variable by using an INSERT statement
INSERT INTO @User(UserId,UserName) VALUES (1,'Varinder'), (2,'Dinesh'), (3,'Vikram'), (4,'Ranjoyt'), (5,'Ram');
5 Now you can pass the variable to a procedure or function
EXEC InsUser @User; GO
Result :
See the values in tables
Note:
We created @InsUser parameter read only because Table-valued parameters must be passed as input READONLY parameters to Transact-SQL routines. You cannot perform DML operations such as UPDATE, DELETE, or INSERT on a table-valued parameter in the body of a routine.
For more detail : http://msdn.microsoft.com/en-us/library/bb510489.aspx