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Help with my sql server stored procedure

Posted on 2008-10-03
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Last Modified: 2010-03-19
I have a stored procedure to which i wish to pass an additional parameter @ROW_TO_RETURN

How do i change the sql query. ( Instead of the top 50 which i am retrieving in the query below, i wish to use the input parameter to specify the row to returns.

SELECT TOP 50
      QUESTION_ID,
      CORRECT_ANSWER_ID,
      MARK_ALLOCATED,
      NEWID()ID
FROM CERTIFYMAX_QUESTIONBANK_VIEW
WHERE SUBJECT_ID=@SUBJECT_ID AND (TOPIC_ID=@TOPIC_ID or @TOPIC_ID = -2) ORDER BY NEWID()

CREATE PROCEDURE [dbo].[CertifyMax_ExamSetup_GenerateExamQuestions]

(

@SUBJECT_ID int,

@TOPIC_ID int,

@ROW_TO_RETURN int,

@EXAM_REFERENCE_CODE nvarchar(50)

)

AS

SET NOCOUNT ON;

 

INSERT INTO CERTIFYMAX_EXAMINATION_QUESTIONS 

(

	QUESTION_ID,

	CORRECT_ANSWER_ID,

	MARK_ALLOCATED,

	EXAM_REFERENCE_CODE,

	COUNT_NO

)

SELECT 

	QUESTION_ID,

	CORRECT_ANSWER_ID,

	MARK_ALLOCATED,

	@EXAM_REFERENCE_CODE,

	ROW_NUMBER() OVER(ORDER BY ID) 

FROM

(

SELECT TOP 50

	QUESTION_ID,

	CORRECT_ANSWER_ID,

	MARK_ALLOCATED,

	NEWID()ID

FROM CERTIFYMAX_QUESTIONBANK_VIEW 

WHERE SUBJECT_ID=@SUBJECT_ID AND (TOPIC_ID=@TOPIC_ID or @TOPIC_ID = -2) ORDER BY NEWID()

) tmp

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Question by:TECH_NET
3 Comments
 
LVL 37

Accepted Solution

by:
momi_sabag earned 500 total points
ID: 22639832
SELECT TOP (@ROW_TO_RETURN)
      QUESTION_ID,
      CORRECT_ANSWER_ID,
      MARK_ALLOCATED,
      NEWID()ID
FROM CERTIFYMAX_QUESTIONBANK_VIEW
WHERE SUBJECT_ID=@SUBJECT_ID AND (TOPIC_ID=@TOPIC_ID or @TOPIC_ID = -2) ORDER BY NEWID()
0
 
LVL 4

Expert Comment

by:petr_hlucin
ID: 22639833
This one should help.
SELECT 

      QUESTION_ID,

      CORRECT_ANSWER_ID,

      MARK_ALLOCATED,

      NEWID()ID,

      ROW_NUMBER() Over (ORDER BY ID) as RowID

FROM CERTIFYMAX_QUESTIONBANK_VIEW 

WHERE SUBJECT_ID=@SUBJECT_ID AND (TOPIC_ID=@TOPIC_ID or @TOPIC_ID = -2) 

AND RowID <= 50

ORDER BY NEWID()

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0
 
LVL 59

Expert Comment

by:Kevin Cross
ID: 22639926
Additional note to asker.

ORDER BY NEWID()

You are essentially creating new uniqueidentifiers for sake of ordering.  Since you have already created these in the select statement through:

NEWID() AS ID

You can order by the column number, in your case 4.

ORDER BY 4

Just an FYI.
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