Re: Insert based in a select

(Please reply to the list when replying)

The error is correct – you are telling PG to insert one row (the literal values you've passed to INSERT), but the sub-query is returning multiple rows which won't fit in a single row.

I see 2 options, but someone else I'm sure will have a more elegant way to do it:

1) insert into base.ingresso (select id from base.cartao order by id)

2) insert into base.ingresso values (nextval(' base.ingresso_id'), 4, now(), 12.34, 12.34, 1, 1678, (select id from base.cartao where id not in (SELECT id from base.ingresso) order by id limit 1), 2, 25, 99)

Number 1 will create one row in base.ingresso for each row in base.cartao. You will then need to use UPDATE to adjust the values in each of those rows to the other values you want.

Number 2 would need to be run over and over again – not a practical option I imagine…

~p

-----Original Message-----
From: Ezequias Rodrigues da Rocha [mailto:ezequias.rocha@gmail.com]
Sent: Monday, 26 February 2007 00:43
To: phillip.smith@weatherbeeta.com.au
Subject: Re: [SQL] Insert based in a select

Phillip,

Thank you for the information but the master (id) is only a field of my secondary table.

My sql statement is like this:

insert into base.ingresso values (nextval(' base.ingresso_id'), 4, now(), 12.34, 12.34, 1, 1678, (select id from base.cartao order by id), 2, 25, 99)

And I am getting the following error return message:

ERROR: more than one row returned by a subquery used as an expression
SQL state: 21000

Could you give me another help with this ?

Ezequias