Question

Just wondering if someone could help me with a very simple SQL query.

I need to transfer data from table1 to table2 where table1.jobID = table2.jobID

Should I use join ?

I would just like to fill in a NULL column with data from table1, using jobID to match.

Thanks in Advance

AC

Answer 1

With the limited knowledge it sounds like all you need is a simple UPDATE:

UPDATE PreviousJobsTEST
SET dValuationDate = Jobs.dValuationDate
FROM PreviousJobsTEST
    JOIN Jobs
        ON PreviousJobsTEST.iJobID= Jobs.iJobID

If you only want it updated if it is null, then you can do this:

UPDATE PreviousJobsTEST
SET dValuationDate = CASE WHEN PreviousJobsTEST.dValuationDate IS NULL THEN Jobs.dValuationDate ELSE PreviousJobsTEST.dValuationDate END
FROM PreviousJobsTEST
    JOIN Jobs
        ON PreviousJobsTEST.iJobID= Jobs.iJobID

OR, based on your comment, you could do what you have listed, you just need to turn it into a SELECT behind the insert:

INSERT INTO [DocPrep].[dbo].[PreviousJobsTEST] (dValuationDate) 
SELECT [DocPrep].[dbo].[Jobs].[dValuationDate]
FROM [DocPrep].[dbo].[PreviousJobsTEST]
    JOIN [DocPrep].[dbo].[Jobs] 
        ON [DocPrep].[dbo].[Jobs].[iJobID] = [DocPrep].[dbo].[PreviousJobsTEST].[iJobID]