Update help requested

[billr]

SQL newby in deep water thats way over my head. Any help appreciated.
I am trying to retrieve data from field in one table and append it to on field in a second table. Each the fields had a Field ID that is different for each. The rows also have no way to relate to each other without linking through a third table. And just for fun I need to restrict the update to only a subset of the rows in TableB

So it looks like this:
TableA TableB TableC
Field1 (ID=20) Field2 (ID=22) TempID
TempID IssueID IssueID

And I tried to do this
Update TA
Set TA.F1=TA.F1 + TB.F2
Where (TA.ID=20) AND (TB.ID=22) AND (TB.IssueID=TC.IssueID) AND (TC.TempID=TA.TempID) AND (TB.IssueID>2200)

[vssp]

hai friend
I give you quick idea. I think may be this idea help for you.
Fisrt writ ethe select statement an reterive the two table values and stored new variables .
And append the variable simple use this variable to update query.

This is for ru using any application for used the update query .

Not use in commend prompt

[ronverdonk]

Don't know about standard SQL, but in MySql i would do something like this:

UPDATE TA, TB, TC
SET    TA.F1=TA.F1 + TB.F2
WHERE (TA.ID=20) 
  AND (TB.ID=22) 
  AND (TB.IssueID=TC.IssueID) 
  AND (TC.TempID=TA.TempID) 
  AND (TB.IssueID>2200)

Ronald :cool: