SQL Server/T-SQL/Store Procedure Function/EXECUTE

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Example to execute the store procedure

1> create table employee(
2>     ID          int,
3>     name        nvarchar (10),
4>     salary      int,
5>     start_date  datetime,
6>     city        nvarchar (10),
7>     region      char (1))
8> GO
1>
2> insert into employee (ID, name,    salary, start_date, city,       region
3>               values (1,  "Jason", 40420,  "02/01/94", "New York", "W")
4> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region
2>               values (2,  "Robert",14420,  "01/02/95", "Vancouver","N")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region
2>               values (3,  "Celia", 24020,  "12/03/96", "Toronto",  "W")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region
2>               values (4,  "Linda", 40620,  "11/04/97", "New York", "N")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region
2>               values (5,  "David", 80026,  "10/05/98", "Vancouver","W")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region
2>               values (6,  "James", 70060,  "09/06/99", "Toronto",  "N")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region
2>               values (7,  "Alison",90620,  "08/07/00", "New York", "W")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region
2>               values (8,  "Chris", 26020,  "07/08/01", "Vancouver","N")
3> GO
(1 rows affected)
1> insert into employee (ID, name,    salary, start_date, city,       region
2>               values (9,  "Mary",  60020,  "06/09/02", "Toronto",  "W")
3> GO
(1 rows affected)
1>
2> select * from employee
3> GO
ID          name       salary      start_date              city       region
----------- ---------- ----------- ----------------------- ---------- ------
          1 Jason            40420 1994-02-01 00:00:00.000 New York   W
          2 Robert           14420 1995-01-02 00:00:00.000 Vancouver  N
          3 Celia            24020 1996-12-03 00:00:00.000 Toronto    W
          4 Linda            40620 1997-11-04 00:00:00.000 New York   N
          5 David            80026 1998-10-05 00:00:00.000 Vancouver  W
          6 James            70060 1999-09-06 00:00:00.000 Toronto    N
          7 Alison           90620 2000-08-07 00:00:00.000 New York   W
          8 Chris            26020 2001-07-08 00:00:00.000 Vancouver  N
          9 Mary             60020 2002-06-09 00:00:00.000 Toronto    W
(9 rows affected)
1>
2> -- example to execute the store procedure - valid
3>
4> IF EXISTS (SELECT name
5>       FROM   sysobjects
6>       WHERE  name = N"sp_Output_Salary"
7>       AND      type = "P")
8>     DROP PROCEDURE sp_Output_Salary
9> GO
1>
2> CREATE PROCEDURE sp_Output_Salary
3>    @ID int,
4>    @OutSalary money OUTPUT
5> AS
6>    SELECT @OutSalary = salary
7>       FROM employee
8>       WHERE Id = @ID
9>
10>    IF @@ROWCOUNT = 1
11>       RETURN
12>    SET @OutSalary = 0
13>    RETURN 1
14> GO
1>
2>
3> GRANT EXECUTE ON sp_Output_Salary TO PUBLIC
4> GO
1>
2>
3> DECLARE @myMoney money
4> DECLARE @Ret_Status int
5> EXECUTE @Ret_Status = sp_Output_Salary 1, @myMoney OUTPUT
6> SELECT @myMoney
7> SELECT @Ret_Status
8> GO
---------------------
           40420.0000
(1 rows affected)
-----------
          0
(1 rows affected)
1>
2> drop table employee
3> GO
1>



Execute a statement

1>
2>
3> -- Replace the default error message and numbers with my own:
4>
5> CREATE PROCEDURE spRunSQL
6>     @Statement VarChar(2000) -- Input param. accepts any SQL statement.
7> AS
8>     DECLARE   @StartTime DateTime
9>             , @EndTime DateTime
10>             , @ExecutionTime Int
11>             , @ErrNum Int
12>     SET @StartTime = GetDate()
13>     EXECUTE (@Statement)
14>     SET @ErrNum = @@Error
15>     IF @ErrNum = 207      -- Bad column
16>        RAISERROR 50001 "Bad column name"
17>     ELSE IF @ErrNum = 208     -- Bad object
18>        RAISERROR 50002 "Bad object name"
19>     ELSE IF @ErrNum = 0   -- No error. Resume.
20>        BEGIN
21>         SET @EndTime = GetDate()
22>         SET @ExecutionTime = DateDiff(MilliSecond, @StartTime, @EndTime)
23>         RETURN @ExecutionTime -- Return execution time in milliseconds
24>       END
25> GO
1>
2> EXEC spRunSQL "select 1 GO"
3> GO
GO
-----------
          1
1>
2> EXEC spRunSQL "selet 1 GO"
3> GO
Msg 102, Level 15, State 1, Server sqle\SQLEXPRESS, Line 1
Incorrect syntax near "GO".
1>
2>
3> drop procedure spRunSQL
4> GO
1>
2>