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Re: How to detect NULL in VarChar (C function) - Mailing list pgsql-interfaces

From	Tom Lane
Subject	Re: How to detect NULL in VarChar (C function)
Date	January 13, 2005 23:24:09
Msg-id	12839.1105645796@sss.pgh.pa.us Whole thread Raw
In response to	How to detect NULL in VarChar (C function) (Benno Pütz <puetz@mpipsykl.mpg.de>)
List	pgsql-interfaces

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Benno Pütz <puetz@mpipsykl.mpg.de> writes:
> I have not been able to find a description of how to detect NULL values 
> in VarChar variables passed to C-functions to catch those cases.

Use PG_ARGISNULL().  See
33.7.4. Calling Conventions Version 1 for C-Language Functions
at
http://www.postgresql.org/docs/7.4/static/xfunc-c.html
        regards, tom lane

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From: Michael Fuhr
Date: 13 January 2005, 23:23:19
Subject: Re: How to detect NULL in VarChar (C function)

From: "Satheesh Mani"
Date: 15 January 2005, 01:19:30
Subject: PGXML

Re: How to detect NULL in VarChar (C function) - Mailing list pgsql-interfaces

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