Re: [HACKERS] Enhancing PGSQL to be compatible with Informix SQL

Bruce Momjian <pgman@candle.pha.pa.us>

From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Rod Chamberlin <rod@querix.com>, pgsql-hackers@postgresql.org
Date: 2000-01-06T16:11:32Z
Lists: pgsql-hackers
> However, if you need to know what value is being given to the
> inserted tuple, much the cleanest solution is to select nextval
> before inserting:
> 
> 	SELECT nextval('sequenceobject');
> 	INSERT INTO table VALUES(... , value-you-just-got, ...);
> 
> If you are always going to do that, then a trigger is a waste of cycles.

He can do:

 	INSERT INTO table VALUES(... , nextval('sequenceobject'), ...);

and currval() will get him the previous nextval() value.

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