INSERT INTO original_table (f2, f3) SELECT DISTINCT f2, f3 FROM new_table;
I did that in the same order as your original message, though I'd have expected original_table and new_table to be swapped, based on their names.
See the manual <http://dev.mysql.com/doc/mysql/en/INSERT_SELECT.html> for the details on INSERT...SELECT.
Michael
leegold wrote:
On Mon, 16 Aug 2004 13:57:13 -0400, "Michael Stassen" <[EMAIL PROTECTED]> said:
You were perfectly clear. We understand that you only want to test f2
and f3 for uniqueness. The question is, which of the possible values
of f1 do you want to get. Do you see? For a particular unique f2, f3
combination, there may be multiple f1 values. How should we choose
which one to put in the new table?
Oh, I understand now, sorry. If I said "it makes no difference" then you'd ask what the heck I have f1 for in the first place...It actually doesn't make a difference. Maybe I should drop f1. f1 is an auto-increment int. so I imagine I'd want f1 re-incremented in numerical order to take the gaps out.
Not exactly normalized (or normal:^), thanks.
That is what Shawn has asked
twice, and you have not answered. Until you answer that, no one can provide a correct solution.
Michael
leegold wrote:
On Mon, 16 Aug 2004 12:39:32 -0400, [EMAIL PROTECTED] said:
Let me see if I can explain it a little better....If you need to move all 3 columns to the new table but you only want *1* row where f2 and f3 have a unique combination of values, how do you want to choose *which* value of f1 to move over with that combination? Do you want the minimum value, the maximum value, or no value at all?
Whoa, it's not that complicated....I want to test only f2 && f3 for uniqueness, not f1 && f2 && f3. That's all. If I'm not making it clear - don't worry...it's not life or death. Thanks. ...snip...
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