Re: Need special sequence generator - Mailing list pgsql-general

am  Mon, dem 18.09.2006, um 15:13:10 +0800 mailte CN folgendes:
> SELECT * FROM t2 WHERE a='const_id'
>
> , then 3 records will be inserted to table t1:
>
> const_id, 1
> const_id, 2
> const_id, 3
>
> I know a PL/PGSQL function like this does the job:

You can use this:

test=# select * from t2;
 id
-----
 aaa
 bbb
 aaa
 ccc
 aaa
 ddd
(6 rows)

test=*# create sequence t2_seq;
CREATE SEQUENCE
test=*# select *, nextval('t2_seq') as foo from t2 where id = 'aaa';
 id  | foo
-----+-----
 aaa |   1
 aaa |   2
 aaa |   3
(3 rows)


(You should use a temp. sequence instead...)


Andreas
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Andreas Kretschmer
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