Re: Re: Same question about PostgreSql - Mailing list pgsql-sql

From Josh Berkus
Subject Re: Re: Same question about PostgreSql
Date
Msg-id web-41031@davinci.ethosmedia.com
Whole thread Raw
In response to Re: Same question about PostgreSql  (Nils Zonneveld <nils@mbit.nl>)
Responses breakage in schema with foreign keys between 7.0.3 and 7.1  (Stef Telford <stef@chronozon.artofdns.com>)
List pgsql-sql
Nils,

> I always thought that Pl/PgSQL functions where 'stored procedures'.
> Probably I'm wrong, but whats the difference between a Pl/PgSQL
> function
> and a stored procedure? (just curious).

Postgres functions have really expanded the concept of function, to the
point of *almost* being stored procedures.  However, there are still a
few things missing:

1. Stored procedures must be able to return a rowset, possibly mutiple
rowsets.
2. Stored procedures usually accept an indefinite number of parameters.
3. Stored procedures should be capable of logging their activites.
4. Stored procedures should have access to the full range of DB control
language, includign cursors, transactions, and error handling.

Of the 4. I'm only certain that 1. is part of the SQL92 spec.  Any more
authoritative opinions?

-Josh



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