Re: getting details about integrity constraint violation

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Markus Bertheau asked:
> how would I find out details about for example what constraint was
> violated by an insert statement? The SQL state tells me, that a unique
> constraint was violated, but it doesn't say which one.

Simply name the table constraints yourself with a descriptive name, so you
always know exactly what is going on:

greg=# create table unitest(a int, b text);
CREATE TABLE
greg=# alter table unitest add constraint "unitest_column_a_is_not_unique" unique(a);
NOTICE: ALTER TABLE / ADD UNIQUE will create implicit index "unitest_column_a_is_not_unique" for table "unitest"
greg=# insert into unitest (a) values (1);
INSERT 0 1
greg=# insert into unitest (a) values (1);
ERROR: duplicate key violates unique constraint "unitest_column_a_is_not_unique"

- --
Greg Sabino Mullane greg(at)turnstep(dot)com
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