Sequence Help

On Wednesday 17 January 2001 14:53, Brian C. Doyle wrote:

Hello all,

How would I setup a sequence that would reflect, for example, abc-0001?

reaster=# create sequence bb;
CREATE

reaster=# select 'abc-' || lpad(nextval('bb'), 4, '0');
?column?
----------
abc-0001
(1 row)

lpad truncates on the right if the string number gets longer than 4 digits.

You'll have to create the sequence, then do something like:

reaster=# create table ttt ( id text default ('abc-' || lpad(nextval('bb'),
4, '0')) );
CREATE
reaster=# insert into ttt default values;
INSERT 2836131 1
reaster=# insert into ttt default values;
INSERT 2836132 1
reaster=# insert into ttt default values;
INSERT 2836133 1
reaster=# insert into ttt default values;
INSERT 2836134 1
reaster=# insert into ttt default values;
INSERT 2836135 1
reaster=# insert into ttt default values;
INSERT 2836136 1
reaster=# insert into ttt default values;
INSERT 2836137 1
reaster=# select * from ttt;
id
----------
abc-0013
abc-0014
abc-0015
abc-0016
abc-0017
abc-0018
abc-0019
(7 rows)

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