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8.2: select from an INSERT returning?

From: Jeff Davis <pgsql(at)j-davis(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: 8.2: select from an INSERT returning?
Date: 2006-09-20 16:42:51
Message-ID: 1158770571.30652.125.camel@dogma.v10.wvs (view raw or flat)
Thread:
Lists: pgsql-general
I was trying to use an INSERT ... RETURNING as a subselect in 8.2. Is
that possible?

jdavis=# create table foo(i int);
CREATE TABLE
jdavis=# insert into foo(i) values(1) returning i;
 i
---
 1
(1 row)

INSERT 0 1
jdavis=# select * from (insert into foo(i) values(1) returning i) t;
ERROR:  syntax error at or near "into"
LINE 1: select * from (insert into foo(i) values(1) returning i) t;
                              ^

If not, is there a reason it shouldn't be allowed, or is that a possible
feature for 8.3?

Also, why no GROUP BY or aggregate functions?

I was interested in using the RETURNING clause in place of using
PQcmdTuples() to get information about what was inserted. I don't think
there's any way for a function to modify what is returned by
PQcmdTuples, right?

Regards,
	Jeff Davis



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