Question

Please help me understand this sql statement?

Asked by: melissa0901

By using this table:

CREATE TABLE Part (
Partid int IDENTITY PRIMARY KEY,
Supplierid int NOT NULL
REFERENCES Part (PartID),
Description VARCHAR (25) NOT NULL,
Count int NOT NULL,
Class VARCHAR (5) NOT NULL,
Inspection smalldatetime NOT NULL);

Write a SQL statement that creates a stored procedure that adds a new record to the Part table, and returns the value of

the newly created PartID PK in an out parameter. The field values of the record to be added should be passed into the

stored proc as input parameters. The assumption here is that the Part table has its PartID PK field as an idendity field,

or surrogate PK, meaning a numeric field that is auto-generated by the db system.

This is what I have come up with:
CREATE PROCEDURE spSuppliers
@Partid int PRIMARY KEY OUTPUT
However after that I am lost. Is there tutorials or web sites that may help me on completing this sql statement?

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Asked On
2009-11-01 at 22:59:35ID24862932
Tags

MS Server 2008

Topics

SQL Server 2008

,

SQL Server 2005

,

MS SQL DTS

Participating Experts
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Answers

 

by: pratima_mcsPosted on 2009-11-01 at 23:10:54ID: 25717498

   SELECT @@IDENTITY

will return Part id

CREATE PROCEDURE spSuppliers
	@Supplierid int,
	@Description VARCHAR (25),
	@Count  INT,
	@Class VARCHAR (5),
	@Inspection smalldatetime
AS
BEGIN
	SET NOCOUNT ON;
	INSERT INTO Part  (Supplierid,Description,[Count],Class,Inspection)
	VALUES (@Supplierid,@Description,@Count,@Class,@Inspection)
 
    SELECT @@IDENTITY
 
END
                                              
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by: CGLuttrellPosted on 2009-11-01 at 23:13:13ID: 25717505

one possible source
http://searchsqlserver.techtarget.com/generic/0,295582,sid87_gci1247499_mem1,00.html
or google for "SQL Server 2008 T-SQL Stored Procedures Tutorial"
Good Luck in your learning

 

by: mwvisa1Posted on 2009-11-02 at 05:53:58ID: 25719241

melissa0901,

Given this is homework as was established in the other question, it is always good to advise the Experts.  Apart from abiding by the academic honesty portion of the MA, hopefully it will indicate to the Experts involved to guide you to understanding of the solution versus just giving it to you since the more you learn the better off you are than us just doing your homework for you.

With that being said, again I would break the pieces of the question up in numbered bullets to ensure you hit every part like a checklist for yourself.


  1. Write a SQL statement that creates a stored procedure that adds a new record to the Part table,
     
  2. returns the value of the newly created PartID PK in an out parameter.
     
  3. The field values of the record to be added should be passed into the stored proc as input parameters.
     
  4. The assumption here is that the Part table has its PartID PK field as an idendity field or surrogate PK, meaning a numeric field that is auto-generated by the db system. 

The above solution (first post) covers most of this.  To insert record you use INSERT INTO statement.  The values are from the input parameters and you do NOT set PartID as it will auto-generate per item #4.  In fact, item #2 is wanting the generated PartID returned.


You need to re-read the CREATE PROCEDURE BOL and see how to specify and output parameter named say "partID" and then you would use SCOPE_IDENTITY() which would be better suited than @@IDENTITY to get you the recently inserted primary key.

You would set your output parameter like this  :

SET @partID = SCOPE_IDENTITY() ;

OR

SELECT @partID = SCOPE_IDENTITY() ;

http://msdn.microsoft.com/en-us/library/ms190315.aspx


Regards,

M-1

20120131-EE-VQP-002

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