Hello
> -----Original Message-----
> From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] On Behalf Of vod vos
> Sent: Sonntag, 12. März 2017 07:15
> To: pgsql-general <pgsql-general@postgresql.org>
> Subject: [GENERAL] How to define the limit length for numeric type?
>
>
> Hi everyone,
>
> How to define the exact limit length of numeric type? For example,
>
> CREATE TABLE test (id serial, goose numeric(4,1));
>
> 300.2 and 30.2 can be inserted into COLUMN goose, but I want 30.2 or 3.2 can not be inserted, how to do this?
Maybe with a CHECK constraint?
CREATE TABLE test
(
id serial,
goose numeric(4,1),
CHECK (goose > 30.2)
);
INSERT INTO test (goose) VALUES (300.2);
INSERT 0 1
INSERT INTO test (goose) VALUES (30.2);
ERROR: new row for relation "test" violates check constraint "test_goose_check"
DETAIL: Failing row contains (2, 30.2).
Of course you should set the correct value that you want to use in the contraint definition.
Regards
Charles
>
> Thank you.
>
>
>
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