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Re: Get current query in a trigger function

From: Vlad Arkhipov <arhipov(at)dc(dot)baikal(dot)ru>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Get current query in a trigger function
Date: 2013-01-15 02:38:11
Message-ID: 50F4C113.80600@dc.baikal.ru (view raw or flat)
Thread:
Lists: pgsql-hackers
On 01/15/2013 01:45 AM, Robert Haas wrote:
> On Fri, Jan 11, 2013 at 4:47 AM, Vlad Arkhipov <arhipov(at)dc(dot)baikal(dot)ru> wrote:
>> Is there any simple way of getting a query for which a trigger was executed?
>> debug_query_string and ActivePortal->sourceText return the top query when
>> there are nested triggers.
> I believe - only if the trigger is written in C.
>
Yes, the trigger is written in C. But I didn't find any way to get 
access to the current EState or QueryDesc from a trigger function. The 
only common place of a trigger and the corresponding EState/QueryDesc 
structs seems to be CurrentMemoryContext in a trigger function, which 
ancestor has to be (?) EState->es_query_cxt. It's an ugly solution of 
course.

P.S. Is it a mistype EState->es_query_cxt? Should it be es_query_ctx?


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