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Remove Duplicate Rows without a Primary Key

Is there a way to remove duplicate rows from a table that does not
have a primary key leaving one copy of the row without comparing each
column to each other as suggested by the code example below:

delete from foo x
where x.rowid <> (
select min(rowid) from foo y
where y.primary key = x.primary key
)

Any ideas?
Jul 19 '05 #1
2 13250
delete from foo x
where x.rowid <> (
select min(rowid) from foo y
where y.field1||y.fie ld2 etc = x.field1||x.fie ld2 etc

"Damien Cobbs" <da**********@g d-ais.com> wrote in message
news:4c******** *************** **@posting.goog le.com...
Is there a way to remove duplicate rows from a table that does not
have a primary key leaving one copy of the row without comparing each
column to each other as suggested by the code example below:

delete from foo x
where x.rowid <> (
select min(rowid) from foo y
where y.primary key = x.primary key
)

Any ideas?

Jul 19 '05 #2

You can do this:

RENAME FOO TO FOO_BKP;

CREATE TABLE FOO AS

SELECT DISTINCT * FROM FOO_BKP;
--
Posted via http://dbforums.com
Jul 19 '05 #3

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