Re: How to look at the Expression Trees

From: Vaibhav Kaushal <vaibhavkaushal123(at)gmail(dot)com>
To: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: How to look at the Expression Trees
Date: 2011-03-22 03:39:56
Message-ID: AANLkTi=DP0abUQOwr639yr+T2hHjwhK5Z_hdq7YbvUXL@mail.gmail.com
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Hi,

You said:

ExecMakeFunctionResultNoSets is used to evaluate function calls.

What are the 'functions' there? Are they the user supplied pl/PGSQL style
user functions, the functions handled by fmgr or are they just another C
function which make the Expression Evaluator?

Regards,
Vaibhav

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