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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Alternative way to write delete query
Mark -
you could also do it with 2 deletes something like this:
delete
from (select column1
from table1
, table_a
where column1 = col_a)
delete
from (select column1
from table1
, table_b
where column1 = col_b)
couldn't find a way to avoid the "ORA-01752: cannot delete from view without exactly one key-preserved table" with the or condition. perhaps someone who isn't still clearing the brain cobwebs after a long weekend can see a solution there.
FWIW - i'm pretty sure SQL Server & Sybase will let you get by with this:
delete
from table1
, table_a
, table_b
or column1 = col_b
(don't have a sandbox handy to confirm though) maybe that's what you were thinking of?
-----Original Message-----
Sent: Tuesday, May 27, 2003 12:27 AM
To: Multiple recipients of list ORACLE-L
Hi List,
I'm having a mental blank and looking for suggestions... I'm trying to remember alternative ways to write the below query:
delete from table
where column in (select col_a
from table_b
union all
select col_b
from table_b);
Having said that, I don't mind if you simplify the nested query down to "select col_a from table_b" even. I just have a feeling that I've seen an equivalent query written totally differently but I can't remember how. I have a feeling it effectively allows more than one table to be mentioned in the delete without needing a nested query (like the options available in normal selects).
Any suggestions?
Thanks,
Mark.
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Mark Richard INET: mrichard_at_transurban.com.au Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: STEVE OLLIG INET: sollig_at_lifetouch.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Tue May 27 2003 - 09:34:50 CDT
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