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created a new field in sqlserver table but cannot update it.

Posted on 2016-08-09
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Last Modified: 2016-08-09
Ive added a new column to my tblwordtags table and I can see it in the column of the table i would like to update it, it is underlining the column the error message is;
Msg 209, Level 16, State 1, Line 5
Ambiguous column name 'ClientCode'.

this works
select *
from TblWordTags wt
LEFT JOIN tblwords w ON w.clientcodeWordPosition = wt.clientcodeWordPosition;

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this does not
Use Dictionary
update TblWordTags
set wt.clientcode=(      'error here
select ClientCode
from TblWordTags wt
LEFT JOIN tblwords w ON W.clientcodeWordPosition = wt.clientcodeWordPosition);

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its strange if you look at the screenshot the column is not showing the field to choose.
2016-08-09.png
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Question by:PeterBaileyUk
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12 Comments
 
LVL 45

Expert Comment

by:Vitor Montalvão
Comment Utility
Try to add the table name to the column name:

update TblWordTags
set clientcode=(      'error here
select wt.ClientCode
from TblWordTags wt
LEFT JOIN tblwords w ON W.clientcodeWordPosition = wt.clientcodeWordPosition);
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LVL 45

Expert Comment

by:Kdo
Comment Utility
The error's probably on line 3.  Qualify the name there (wt.clientcode or w.clientcode) and you should be fine.


Kent
0
 
LVL 69

Expert Comment

by:Éric Moreau
Comment Utility
an update statement should not contain a select clause:
update wt
set clientcode= whichfielddoyouwanthere
from TblWordTags wt
LEFT JOIN tblwords w ON W.clientcodeWordPosition = wt.clientcodeWordPosition

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Expert Comment

by:Jim Horn
Comment Utility
Couple things wrong with your query:

  • Line 2 : Uses the alias wt., but wt only lives in the subquery in lines 3-5, so line 2 does not know what wt. is.  Remove it.
  • Line 3-5:  Are you certain that that query will return one and only one row?  If not, you'll get a 'Subquery cannot return more than one row' error message, as line 2 attempts to assign a single value to the result of a subquery, which cannot return more than one row.
  • Looks like you're setting tblWordTags.ClientCode to TblWordTags.ClientCode.  Are you sure that is correct?
1
 

Author Comment

by:PeterBaileyUk
Comment Utility
tblwords contains the field clientcode with clientcodewordposition as pk in both tables and i want to get each clientcodewordposition that exists in the tblwordtags and update its clientcode to the same value.

the select works here are the rows attached
ee.JPG
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Author Comment

by:PeterBaileyUk
Comment Utility
I thought this might work but it doesnt

UPDATE TblWords LEFT JOIN TblWordTags ON TblWords.ClientCodeWordPosition = TblWordTags.ClientCodeWordPosition SET TblWordTags.ClientCode = [TblWords].[ClientCode]
WHERE (((TblWordTags.ClientCodeWordPosition) Is Not Null));

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Expert Comment

by:Éric Moreau
Comment Utility
that would be:
update wt
set clientcode= w.clientcode
from TblWordTags wt
LEFT JOIN tblwords w ON W.clientcodeWordPosition = wt.clientcodeWordPosition

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Author Comment

by:PeterBaileyUk
Comment Utility
41748967 updated a similar table in access. obviously very different now in transact sql
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Accepted Solution

by:
Jim Horn earned 500 total points
Comment Utility
Still not abundantly clear what you are trying to pull off here, but taking the above T-SQL and making the syntax correct.  

UPDATE wt
SET wt.ClientCode = w.ClientCode
FROM TblWords w
   LEFT JOIN TblWordTags wt ON w.ClientCodeWordPosition = wt.ClientCodeWordPosition 
WHERE wt.ClientCodeWordPosition Is Not Null

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btw notice the elimination of unnecessary square brackets [] and parentheses marks ().
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Expert Comment

by:Jim Horn
Comment Utility
>updated a similar table in access. obviously very different now in transact sql
For a handy guide in converting Access SQL to T-SQL check out  Migrating your Access Queries to SQL Server Transact-SQL
1
 

Author Comment

by:PeterBaileyUk
Comment Utility
saved everything then closed and opened sql server and the query on ID: 41748976 that i tried earlier now works.
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Author Closing Comment

by:PeterBaileyUk
Comment Utility
thank you
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