Waiting for 9.2 – Trigger Depth

On 25th of January, Alvaro Herrera committed patch:

Add pg_trigger_depth() function
 
This reports the depth level of triggers currently in execution, or zero
if not called from inside a trigger.
 
No catversion bump in this patch, but you have to initdb if you want
access to the new function.
 
Author: Kevin Grittner

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