Trying to update only certain selected records

Question

I crated a query to select certain records as follows:
SELECT     TOP (100) PERCENT BUDGETDB_VENDR_1.VENDOR, MAX(dbo.MMDDYY(BUDGETDB_APCHK.CHECK_DATE)) AS CHKDATE, BUDGETDB_VENDR_1.VNSTATUS
FROM          BUDGETDB_VENDR AS BUDGETDB_VENDR_1 LEFT OUTER JOIN BUDGETDB_APCHK ON BUDGETDB_VENDR_1.VENDOR = BUDGETDB_APCHK.VENDOR
GROUP BY BUDGETDB_VENDR_1.VENDOR, BUDGETDB_VENDR_1.VNSTATUS
HAVING  (BUDGETDB_VENDR_1.VNSTATUS = 'A') AND (MAX(dbo.MMDDYY(BUDGETDB_APCHK.CHECK_DATE)) < CONVERT(DATETIME, '2012-10-01 00:00:00', 102)) OR (BUDGETDB_VENDR_1.VNSTATUS = 'A') AND (MAX(dbo.MMDDYY(BUDGETDB_APCHK.CHECK_DATE))
IS NULL)
The query runs and only returns 7400 out of 9300 records.  I need to update the status of these 7400 records to inactive.  However, when I use the following to update, it updates all 9300 records not the 7400 selected.  Please advise.
UPDATE    BUDGETDB_VENDR
SET             
VNSTATUS = 'I'
WHERE     EXISTS
(SELECT     TOP (100) PERCENT BUDGETDB_VENDR_1.VENDOR, MAX(dbo.MMDDYY(BUDGETDB_APCHK.CHECK_DATE)) AS CHKDATE,
     BUDGETDB_VENDR_1.VNSTATUS
FROM          BUDGETDB_VENDR AS BUDGETDB_VENDR_1 LEFT OUTER JOIN
BUDGETDB_APCHK ON BUDGETDB_VENDR_1.VENDOR = BUDGETDB_APCHK.VENDOR
             GROUP BY BUDGETDB_VENDR_1.VENDOR, BUDGETDB_VENDR_1.VNSTATUS
HAVING      (BUDGETDB_VENDR_1.VNSTATUS = 'A') AND (MAX(dbo.MMDDYY(BUDGETDB_APCHK.CHECK_DATE)) < CONVERT(DATETIME,
           '2012-10-01 00:00:00', 102)) OR
(BUDGETDB_VENDR_1.VNSTATUS = 'A') AND (MAX(dbo.MMDDYY(BUDGETDB_APCHK.CHECK_DATE)) IS NULL))

Answer 1

Hi,
Try with this query.
UPDATE   
BUDGETDB_VENDR
SET             
VNSTATUS = 'I'
FROM         
BUDGETDB_VENDR AS BUDGETDB_VENDR_1
LEFT OUTER JOIN BUDGETDB_APCHK
ON BUDGETDB_VENDR_1.VENDOR
= BUDGETDB_APCHK.VENDOR
GROUP
BY BUDGETDB_VENDR_1.VENDOR, BUDGETDB_VENDR_1.VNSTATUS
HAVING 
(BUDGETDB_VENDR_1.VNSTATUS
= 'A')
AND (MAX(dbo.MMDDYY(BUDGETDB_APCHK.CHECK_DATE))
< CONVERT(DATETIME,
'2012-10-01 00:00:00', 102))
 OR
(BUDGETDB_VENDR_1.VNSTATUS
= 'A')
AND (MAX(dbo.MMDDYY(BUDGETDB_APCHK.CHECK_DATE))
IS NULL)
Thanks, RajaSekhara Reddy . K