Re: drop a check

ivan marchesini <marchesini(at)unipg(dot)it> schrieb:

> Dear all...
> I have created a check constraint without giving it a name..
> now I have a check named "$25" in my table that I need to drop or
> modify!!!
> How can I do???

Can you see the name with \d <table> within psql?

An example:

test=# create table bla (id int check (id between 1 and 4));
CREATE TABLE
test=# \d bla
Table "public.bla"
Column | Type | Modifiers
--------+---------+-----------
id | integer |
Check constraints:
"bla_id_check" CHECK (id >= 1 AND id <= 4)

test=# alter table bla drop CONSTRAINT bla_id_check;
ALTER TABLE
test=# \d bla
Table "public.bla"
Column | Type | Modifiers
--------+---------+-----------
id | integer |

HTH, Andreas
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