Ralph van Etten wrote:
Hoi,

I searched the archives but couldn't find an answer to this:

I have a table (simplyfied)

CREATE TABLE test (
  id   INT PRIMARY KEY,
  name VARCHAR(250)
);

I insert records with

INSERT INTO test (id, name)
SELECT COALESCE(MAX(id)+1, 1), 'name' FROM test

Ofcourse this gives problems when two clients are inserting a record at
the same time. (duplicate primary keys) But, i can't use a sequence in my
application (the pk consists of more than just a sequence)


It's not clear why you can't use a serial as the primary key or as part of the primary key. From your example it looks like you are trying to do exactly that.


What does your *real* primary key consist of?

Cheers,
Gary.

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