Re: plpgsql error message

Lists: pgsql-hackers
From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: pgsql-hackers(at)postgresql(dot)org
Subject: plpgsql error message
Date: 2009-06-17 13:40:39
Message-ID: 200906171640.39276.peter_e@gmx.net
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In plpgsql, if you write

OPEN var BLAH

you can an error message like this:

ERROR: syntax error ...
DETAIL: Expected "FOR", to open a reference cursor.

But what is a "reference cursor"? Isn't this rather saying "... to open a
cursor, a reference to which will be stored in your variable"? Anyone got a
better idea for a wording?


From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: plpgsql error message
Date: 2009-06-17 15:25:12
Message-ID: 27153.1245252312@sss.pgh.pa.us
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Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> In plpgsql, if you write
> OPEN var BLAH

> you can an error message like this:

> ERROR: syntax error ...
> DETAIL: Expected "FOR", to open a reference cursor.

> But what is a "reference cursor"? Isn't this rather saying "... to open a
> cursor, a reference to which will be stored in your variable"? Anyone got a
> better idea for a wording?

The documentation uses the phrase "unbound cursor". +1 for changing it
--- I don't see any other uses of "reference cursor", except in
pg_type.h where type "refcursor" is commented that way. And that should
probably read "reference to cursor".

regards, tom lane