Enhance a SQL query with update of millions of rows
Hi ,
I have this query developed to updated around 200 million of rows on my production , I did my best but please need your recommendations\concerns to make it more enhanced
DECLARE @ORIGINAL_ID AS BIGINT
SELECT FID001 INTO #Temp001_
FROM INBA004 WHERE RS_DATE>='1999-01-01'
AND RS_DATE<'2014-01-01' AND CLR_f1st='SSLM'
and FID001 >=12345671
WHILE (SELECT COUNT(*) FROM #Temp001_ ) <>0
BEGIN
SELECT TOP 1 @ORIGINAL_ID=FID001 FROM #Temp001_ ORDER BY FID001
PRINT CAST (@ORIGINAL_ID AS VARCHAR(100))+' STARTED'
SELECT DISTINCT FID001
INTO #OUT_FID001
FROM OUTTR009 WHERE TRANSACTION_ID IN (SELECT TRANSACTION_ID FROM
INTR00100 WHERE FID001 = @ORIGINAL_ID)
UPDATE A SET RCV_Date=B.TIME_STAMP
FROM OUTTR009 A INNER JOIN INTR00100 B
ON A.TRANSACTION_ID=B.TRANSACTION_ID
WHERE A.FID001 IN (SELECT FID001 FROM #OUT_FID001)
AND B.FID001=@ORIGINAL_ID
UPDATE A SET Sending_Date=B.TIME_STAMP
FROM INTR00100 A INNER JOIN OUTTR009 B
ON A.TRANSACTION_ID=B.TRANSACTION_ID
WHERE A.FID001=@ORIGINAL_ID
AND B.FID001 IN (SELECT FID001 FROM #OUT_FID001)
DELETE FROM #Temp001_ WHERE FID001=@ORIGINAL_ID
DROP TABLE #OUT_FID001
PRINT CAST (@ORIGINAL_ID AS VARCHAR(100))+' FINISHED'
END
DECLARE @x INT
SET @x = 1
WHILE @x < 44,000,000 -- Set appropriately
BEGIN
UPDATE Table SET a = c+d where ID BETWEEN @x AND @x + 10000
SET @x = @x + 10000
END
Make sure that ID column has a CI on.
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
MS SQL optimization: MS SQL Development and Optimization
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hi1
i have 1000 rows in my table that are not unique. i have added a new column named sno.initially that contains null values. Now i want to update the table with sno contains serial no. from 1 to 1000 in a single SQL query
please help
Thanks
Harinderhi1
i have 1000 rows in my table that are not unique. i
have added a new column named sno.initially that
contains null values. Now i want to update the table
with sno contains serial no. from 1 to 1000 in a
single SQL query
please help
Thanks
HarinderIt will work..
Update <table_name> set <column_name> = ROWNUM
whether the records are duplicate or not... -
Form on SQL query for updating.
Hello again,
Im trying to wirte a form to udapte the information in a table. I have a table with a PK which holds a persons name, and an activity assigned to them (and loads of other fields but they dont matter atm). I would like to have a form which has an SQL query running in one region and then the form underneath to be able to edit (reassign a person to a different activity) an item appearing in the query result. Ive got a form at the moment which is form on an sql query but its not updating when i fill out the form, is it something to do with the regions?
http://img.photobucket.com/albums/v611/Funky_Monk/untitled.jpg
So on the screenie, i have the bottom region for the query (no values in table hence the error (i think!))
The call ID is FK to another table
severity level and status will be usdated here
description is self-explanitory
analyst_id is the main field to be changed here, the call id will be assigned a new analyst via this form.
action_id is actions carried out on this problem.
Any help would be greatly appreciated.
DMhi,
Can you put this example on apex.oracle.com?
Regards,
Kartik Patel
http://patelkartik.blogspot.com/
http://apex.oracle.com/pls/apex/f?p=9904351712:1
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