Re: Insert based in a select

Apologies – the first statement should have included the column name to
insert to:

INSERT INTO base.ingresso (id_column) (SELECT id FROM base.cartao ORDER BY
id)

That will insert one row in ingresso for each row in cartao – only changing
the id column. All the other columns in each row will be populated with the
default values. That is why you will need to do an UPDATE afterwards.
Something like:

UPDATE base.ingresso

SET col1 = ‘value1’, sol2 = ‘value2’

WHERE id IN (SELECT id FROM base.cartao);

Hope this makes sense,

~p

-----Original Message-----
From: pgsql-sql-owner(at)postgresql(dot)org [mailto:pgsql-sql-owner(at)postgresql(dot)org]
On Behalf Of Ezequias Rodrigues da Rocha
Sent: Monday, 26 February 2007 10:58
To: Phillip Smith
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: [SQL] Insert based in a select

The second statement works but only 1 row was affected. It do not apply to
me.

The first statement i didn't understand. You are adding only the first field
on my base.ingresso table ?

Regards
Ezequias

2007/2/25, Phillip Smith <phillip(dot)smith(at)weatherbeeta(dot)com(dot)au>:

(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(dot)rocha(at)gmail(dot)com]
Sent: Monday, 26 February 2007 00:43
To: phillip(dot)smith(at)weatherbeeta(dot)com(dot)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

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A pior das democracias ainda é melhor do que a melhor das ditaduras
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