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Update Query

Posted on 2013-01-20
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Last Modified: 2013-01-21
Experts,

I need to confirm what this update query says.
The where condition is saying: dont update if ([import-CSM2].LCID) IS NOT IN [tblLetterOfCredit].[LetterOfCreditID]  but it will update if ([import-CSM2].LCID) IS IN [tblLetterOfCredit].[LetterOfCreditID]

I hope that makes sense.  


UPDATE [import-CSM2] INNER JOIN tblLetterOfCredit ON [import-CSM2].[Reference Number] = tblLetterOfCredit.LCNo SET [import-CSM2].LCID = [tblLetterOfCredit].[LetterOfCreditID]
WHERE ((([import-CSM2].LCID) Not In (SELECT [tblLetterOfCredit].[LetterOfCreditID] From [tblLetterOfCredit])) AND (([import-CSM2].[Actual Status])<>"GEC"));
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Question by:pdvsa
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9 Comments
 
LVL 61

Expert Comment

by:mbizup
ID: 38799643
I believe you've got things backwards.

Your query as is WILL update if

[import-CSM2].LCID Is Not found In [tblLetterOfCredit].[LetterOfCreditID]
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LVL 29

Expert Comment

by:becraig
ID: 38799644
It is saying update ONLY if the following two conditions are met:
1. import-CSM2].[Actual Status])<>"GEC"
2. import-CSM2].LCID is not present in SELECT [tblLetterOfCredit].[LetterOfCreditID] From [tblLetterOfCredit]
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LVL 61

Expert Comment

by:mbizup
ID: 38799648
Try this instead:

UPDATE [import-CSM2] INNER JOIN tblLetterOfCredit ON [import-CSM2].[Reference Number] = tblLetterOfCredit.LCNo
AND [import-CSM2].LCID  = SELECT [tblLetterOfCredit].[LetterOfCreditID]
 SET [import-CSM2].LCID = [tblLetterOfCredit].[LetterOfCreditID]

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LVL 61

Expert Comment

by:mbizup
ID: 38799652
Correction to include the <> GEC:

UPDATE [import-CSM2] INNER JOIN tblLetterOfCredit ON [import-CSM2].[Reference Number] = tblLetterOfCredit.LCNo
AND [import-CSM2].LCID  = SELECT [tblLetterOfCredit].[LetterOfCreditID]
SET [import-CSM2].LCID = [tblLetterOfCredit].[LetterOfCreditID]
WHERE [import-CSM2].[Actual Status] <>"GEC"

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Author Comment

by:pdvsa
ID: 38799660
mbizup:  

Do you see a syntax in the response right above?  It says there is one.  It highlights [import-CSM2].[Reference Number]  on the first line.  

thanks...
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LVL 61

Accepted Solution

by:
mbizup earned 2000 total points
ID: 38799693
Yup -- copy/paste issues.  I got the SELECT in there by mistake.

Try this:

UPDATE [import-CSM2] INNER JOIN tblLetterOfCredit 
ON [import-CSM2].[Reference Number] = tblLetterOfCredit.LCNo
AND [import-CSM2].LCID  = [tblLetterOfCredit].[LetterOfCreditID]
 SET [import-CSM2].LCID = [tblLetterOfCredit].[LetterOfCreditID]
WHERE [import-CSM2].[Actual Status] <>"GEC"

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0
 
LVL 61

Expert Comment

by:mbizup
ID: 38799703
Or try this:

UPDATE [import-CSM2] INNER JOIN tblLetterOfCredit ON [import-CSM2].[Reference Number] = tblLetterOfCredit.LCNo SET [import-CSM2].LCID = [tblLetterOfCredit].[LetterOfCreditID]
WHERE [import-CSM2].LCID IN (SELECT [tblLetterOfCredit].[LetterOfCreditID] From [tblLetterOfCredit]) AND [import-CSM2].[Actual Status] <>"GEC";

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Author Comment

by:pdvsa
ID: 38799727
perfect.   These queries are difficult.  Both SQL's returned same number of records.

thank you!
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LVL 61

Expert Comment

by:mbizup
ID: 38799759
If they both worked okay, I would opt for the first... I believe it would be better performance-wise.
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