Need To Convert Cursor

Dec 11, 2006

I am new to SQL and have created a stored procedure for a .net web
application. Unfortunately I had to use a cursor in the stored
procedure, so it is taking several minutes to execute because it has to
read through about 15,000 records. There must be another way to do
what I'm trying to do without a cursor. I've tried temp tables and
case statements, but I can't seem to get them to work. I've been
trying to figure this out for over a week and I am just running into a
wall. Some expert advise would be much appreciated. My code is below.
Thank you in advance.


--Insert records into first temp table
DECLARE @tempA TABLE
(
lnkey varchar(10),
AuditorIDvarchar(7)
)

INSERT INTO @tempA

SELECT
LNKEY
,AuditorID

FROM
dbo.tblALPSLoans
WHERE AuditDate BETWEEN @BegDate AND @EndDate --parameters from my
application
AND AuditorID IN (SELECT LANID FROM dbo.tblEmployees WHERE ACTIONTYPE =
'ADDED')
AND AuditType = @AuditType --parameter from my application


--Insert percentage value of Pre-Funding completes for each auditor
into temp table B
DECLARE @tempB TABLE
(
LnkeyCount int,
AuditorIDvarchar(7)
)

INSERT INTO @tempB

SELECT
ROUND(COUNT(LNKEY) * @Percent/100, 0) AS 'LnkeyCount'
,AuditorID
FROM dbo.tblALPSLoans
WHERE AuditDate BETWEEN @BegDate AND @EndDate
AND AuditorID IN (SELECT LANID FROM dbo.tblEmployees WHERE ACTIONTYPE =
'ADDED')
GROUP BY AuditorID



/*Create cursor to loop through records and add a loan number to
tblinjectloans if the number of loans in tblinjectloans for each
auditor is less than the percentage value for each auditor from
@tempB*/

DECLARE @lnkey varchar(10)
DECLARE @AuditorID varchar(7)
DECLARE @var1int
DECLARE @var2int
DECLARE @sqlvarchar(4000)


DECLARE c1 CURSOR FOR
SELECT lnkey, auditorid
FROM @TempA

OPEN c1

FETCH NEXT FROM c1
INTO @LNKEY, @AuditorID

WHILE @@FETCH_STATUS = 0
BEGIN

Select @var1 = COUNT(Lnkey) from dbo.tblInjectLoans where
AuditorID=@AuditorID
Select @var2 = LnkeyCount from @tempB where AuditorID=@AuditorID
IF @var1 < @var2
Insert into dbo.tblInjectLoans
(lnkey, AuditorID)
Values (@LNKEY, @AuditorID)


FETCH NEXT FROM c1
INTO @LNKEY, @AuditorID

END

CLOSE c1
DEALLOCATE c1

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Msg 16958, Level 16, State 3, Procedure sp_MSforeach_worker, Line 31

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Msg 16958, Level 16, State 3, Procedure sp_MSforeach_worker, Line 32

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SET @dp2 = 43200
SET @dp3 = 64800
SET @dp4 = 86400

SELECT COUNT(CASE WHEN BreakTime >= 0 AND BreakTime < @dp1 THEN 1 END) AS SC1,
COUNT(CASE WHEN BreakTime >= @dp1 AND BreakTime < @dp2 THEN 1 END) AS SC2,
COUNT(CASE WHEN BreakTime >= @dp2 AND BreakTime < @dp3 THEN 1 END) AS SC3,
COUNT(CASE WHEN BreakTime >= @dp3 AND BreakTime < @dp4 THEN 1 END) AS SC4
FROM DenInt
WHERE BreakType = 'SOFT'
AND BreakDate = @BreakDate
AND ProductID = @ProductID

SET num1 = SC1 * 0.1
SET num2 = SC2 * 0.1
SET num3 = SC3 * 0.1
SET num4 = SC4 * 0.1

DECLARE cCan CURSOR
FOR
SELECT *
FROM DenInt
WHERE BreakDate = @BreakDate
AND ProductID = @ProductID
ORDER BY BreakTime


OPEN cCan

FETCH cCan INTO @event

WHILE @@FETCH_STATUS = 0

BEGIN
IF num1 > 0 AND BreakTime >= 0 AND BreakTime < dp1

UPDATE DenInt
SET BreakType = 'SOMETHING'
WHERE DIGridID = DIGridID

END

CLOSE cCan

DEALLOCATE cCan


however, when i run the code above it returns

Server: Msg 170, Level 15, State 1, Line 4
Line 4: Incorrect syntax near 'num1'.
Server: Msg 170, Level 15, State 1, Line 22
Line 22: Incorrect syntax near '='.
Server: Msg 137, Level 15, State 1, Line 38
Must declare the variable '@event'.


what am i doing wrong? thanks for the help in advance

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Jul 5, 2004

I need to fill a cursor with 3 columns.
A want to use a Select sprocs (for re-use de code), but this sproc return 15 columns and the 3 a need was not the 3 frist. :confused:

Do I need to map the 15 columns with 15 variables locally? Or they have a way easier?


Thanks

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Oct 6, 2004

Hi,

I'm currently converting a VB function to SQL-Server. The function uses a cursor to find the "terms of delivery" (TOD) with the highest priority.

I have a table with articlenumber, tod (and lots of other columns that doesn't matter now)

ABC123 , AFG
ABC123 , AFG
ABC123 , BGH
ABC123 , BGH
ABC123 , CDD

"CDD" has the highest priority and therefore ALL with the same articlenumber should use that tod.

The existing function uses a cursor and loops through a recordset and updates every row with the same articlenumber as the current row with the tod with the highest priority (of the ones read) with the same articlenumber.

One update per row takes "forever" to run...

I figured it would be possible to select the tod with the highest priority for one articlenumber into a temp table and then do ONE update to set the tod on all rows...

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