Question

I have two tables with the same columns

tbl_source (ID, Title)  tbl_dest (ID, Title) 

I want to update tbl_dest titles from the tbl_source where the ids in dest and source match. However, I don’t want to update the dest title if the source title is null (or blank).

I’ve got this:

UPDATE    tbl_dest SET              tbl_dest.Title =       (SELECT     title         FROM          tbl_source         WHERE      tbl_dest.id = tbl_source.ID and tbl_source.title is not null) 

But it keeps inserting the nulls.

How would I construct such a query?

I am using SQL server 2005.

Thanks.

Answer 1

Use an inner join…

Update tbl_dest Set tbl_dest.Title = tbl_source.Title From tbl_dest inner join tbl_source on tbl_dest.ID = tbl_source.ID Where tbl_source.Title is not null and tbl_source.Title <> ''