Using UNION in a query with PHP [migrated]

Posted by work on Programmers See other posts from Programmers or by work
Published on 2011-06-25T04:26:13Z Indexed on 2011/06/25 8:30 UTC
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sql

I have an SQL query which links 3 tables using UNION:

$sql ="(SELECT Drive.DriveID,Ram.Memory from Drive,Ram where Drive.DriveID = Ram.RamID) UNION
(SELECT Drive.DriveID,External.Memory from Drive, External where Drive.DriveID = External.ExtID)";

Suppose I want to get Ram.Name as well. How do I do this? If I use Ram.Name in the first SELECT statement it would not produce the correct result.

Any method for tackling this? I want to do it using UNION.

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