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/*
* Headers for handling of SET var TO statements
*
* $Id: variable.h,v 1.3 1997/04/23 03:17:52 scrappy Exp $
*
* $Log: variable.h,v $
* Revision 1.3 1997/04/23 03:17:52 scrappy
* To: Thomas Lockhart <Thomas.G.Lockhart@jpl.nasa.gov>
* Subject: Re: [PATCHES] SET DateStyle patches
*
* On Tue, 22 Apr 1997, Thomas Lockhart wrote:
*
* > Some more patches! These (try to) finish implementing SET variable TO value
* > for "DateStyle" (changed the name from simply "date" to be more descriptive).
* > This is based on code from Martin and Bruce (?), which was easy to modify.
* > The syntax is
* >
* > SET DateStyle TO 'iso'
* > SET DateStyle TO 'postgres'
* > SET DateStyle TO 'sql'
* > SET DateStyle TO 'european'
* > SET DateStyle TO 'noneuropean'
* > SET DateStyle TO 'us' (same as "noneuropean")
* > SET DateStyle TO 'default' (current same as "postgres,us")
* >
* > ("european" is just compared for the first 4 characters, and "noneuropean"
* > is compared for the first 7 to allow less typing).
* >
* > Multiple arguments are allowed, so SET datestyle TO 'sql,euro' is valid.
* >
* > My mods also try to implement "SHOW variable" and "RESET variable", but
* > that part just core dumps at the moment. I would guess that my errors
* > are obvious to someone who knows what they are doing with the parser stuff,
* > so if someone (Bruce and/or Martin??) could have it do the right thing
* > we will have a more complete set of what we need.
* >
* > Also, I would like to have a floating point precision global variable to
* > implement "SET precision TO 10" and perhaps "SET precision TO 10,2" for
* > float8 and float4, but I don't know how to do that for integer types rather
* > than strings. If someone is fixing the SHOW and RESET code, perhaps they can
* > add some hooks for me to do the floats while they are at it.
* >
* > I've left some remnants of variable structures in the source code which
* > I did not use in the interests of getting something working for v6.1.
* > We'll have time to clean things up for the next release...
*
* Revision 1.2 1997/04/17 13:50:57 scrappy
* From: "Martin J. Laubach" <mjl@CSlab.tuwien.ac.at>
* Subject: [HACKERS] Patch: set date to euro/us postgres/iso/sql
*
* Here a patch that implements a SET date for use by the datetime
* stuff. The syntax is
*
* SET date TO 'val[,val,...]'
*
* where val is us (us dates), euro (european dates), postgres,
* iso or sql.
*
* Thomas is working on the integration in his datetime module.
* I just needed to get the patch out before it went stale :)
*
* Revision 1.1 1997/04/10 16:53:30 mjl
* Initial revision
*
*/
/*-----------------------------------------------------------------------*/
enum DateFormat { Date_Postgres, Date_SQL, Date_ISO };
/*-----------------------------------------------------------------------*/
struct PGVariables
{
struct
{
bool euro;
enum DateFormat format;
} date;
};
extern struct PGVariables PGVariables;
/*-----------------------------------------------------------------------*/
bool SetPGVariable(const char *, const char *);
bool GetPGVariable(const char *);
bool ResetPGVariable(const char *);
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