| From: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
|---|---|
| To: | Vaibhav Kaushal <vaibhavkaushal123(at)gmail(dot)com> |
| Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: How to look at the Expression Trees |
| Date: | 2011-03-22 08:06:53 |
| Message-ID: | 4D88589D.6030505@enterprisedb.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On 22.03.2011 05:39, Vaibhav Kaushal wrote:
> 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?
Functions you can use in queries, written in PL/pgSQL or other PL
languages. Including user-defined and built-in functions, and functions
implementing operators.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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