From: | Dmitriy Igrishin <dmitigr(at)gmail(dot)com> |
---|---|
To: | Stefan Wild <wilds81(at)yahoo(dot)de> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: INSERT with SELECT not working in pgAdmin |
Date: | 2010-09-21 18:53:17 |
Message-ID: | AANLkTimwT4uie_kqCxQsODY=TCPv+d0+wzd2wtCQeasZ@mail.gmail.com |
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Lists: | pgsql-general |
Hey Stefan,
For surrogate keys there is no reason to calculate values manually.
You should use sequences instead. Please, see
http://www.postgresql.org/docs/8.3/static/sql-createsequence.html
You may also use a SERIAL data type which creates a sequence
for you automatically upon its creation. Please, see
http://www.postgresql.org/docs/8.3/static/datatype-numeric.html#DATATYPE-SERIAL
Since you execute INSERT command without specifying an "id" column,
and there is no default value for it, then the default is NULL. So, you need
to define a default and the best solution to define it as next value of
sequence.
--
Regards,
Dmitriy
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