Re: default parameters for built-in functions

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От Peter Eisentraut
Тема Re: default parameters for built-in functions
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Msg-id 200904090213.55161.peter_e@gmx.net
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Ответ на Re: default parameters for built-in functions  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: default parameters for built-in functions  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Tuesday 07 April 2009 03:36:43 Tom Lane wrote:
> You won't get far with doing it to pg_proc: internal functions *have to*
> have entries in there, else the fmgrtab infrastructure for them doesn't
> get created.  (Yeah, I suppose there are other ways to drive that, but
> the fact remains that they need more than just a SQL command.)

What is the purpose of fmgrtab anyway?  Is it speed (how much) or some 
bootstrapping issue (in which case converting "most" as proposed by Greg would 
still work)?


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