Re: [BUGS] issue about information_schema REFERENTIAL_CONSTRAINTS

bruce wrote:
>
> I have moved the text about duplicate constraints to the top of the
> information schema section because it affects several tables (applied
> patch attached). I could not figure out how to get the actual error
> concept to the front of the paragraph.

I found a way to reword the paragraph to be clearer about its purpose:

When querying the database for constraint information, it is possible
for a standard-compliant query that expects to return one row to
return several. This is because the SQL standard requires constraint
names to be unique within a schema, but
<productname>PostgreSQL</productname> does not enforce this
restriction. <productname>PostgreSQL</productname>
automatically-generated constraint names avoid duplicates in the
same schema, but users can specify such duplicate names.

Applied.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ It's impossible for everything to be true. +