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running a complex sql with begin tran commit tran

Posted on 2011-09-15
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Last Modified: 2012-05-12
I have a complex sql that has several steps to eventually update some records in a table. To identify the records it pulls some records in three temp tables (#Priority, #pi, #he) and then finds distinct common rows by joining those three temp tables into a fourth temp table #cross, then fires an update  and a delete command which looks like the code copied below, and then it uses cursors to update some columns in another table.

UPDATE OMC
		SET SCID = c.PChart,
			SCProductID = 9,
			SCHREID = c.HREID,
			ETypeID = 2,
			ChangeID = System_User,
			ChangeDate = getdate()	
		FROM dbo.OMChart OMC
		JOIN #cross c
		ON   OMC.MCID = c.HDC
		WHERE SCID is null


DELETE FROM OMChart
		WHERE MCID IN (SELECT mc.MCID
									FROM dbo.OMChart mc
									JOIN #cross c
									  ON mc.MCID = c.PChart
									WHERE  mc.SCID IS NULL)

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My question is that will this sql that involves all these temp tables in memory and cursors run with begin tran and commit tran. I want to see how many rows are inserted in the temp tables and how many rows are updated in each step before i commit the tran.

Thanks,


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Question by:patd1
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3 Comments
 
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Expert Comment

by:jogos
ID: 36543168
temp tables can be used within begin/commit tran

How much records are affected in your last statement you can by using the @@ROWCOUNT directly after that statement. cfr http://msdn.microsoft.com/en-us/library/ms187316(v=SQL.110).aspx
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Author Comment

by:patd1
ID: 36543219
Thanks jogos. How about cursors? can cursors be used with begin/commit tran.
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jogos earned 500 total points
ID: 36543424
within  a transaction mus just be vallid sql

but off-topic  try to avoid using a cursor and especialy when nested, it's slow and gets slower the more records gets into your tables
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