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Implement function-local GUC parameter settings, as per recent discussion.

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There are still some loose ends: I didn't do anything about the SET FROM
CURRENT idea yet, and it's not real clear whether we are happy with the
interaction of SET LOCAL with function-local settings.  The documentation
is a bit spartan, too.
This commit is contained in:
Tom Lane
2007-09-03 00:39:26 +00:00
parent fcfe801ab8
commit 2abae34a2e
23 changed files with 2583 additions and 2151 deletions
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9
src/include/utils/guc.h
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@ -7,7 +7,7 @@
* Copyright (c) 2000-2007, PostgreSQL Global Development Group
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* $PostgreSQL: pgsql/src/include/utils/guc.h,v 1.83 2007/07/25 12:22:54 mha Exp $
* $PostgreSQL: pgsql/src/include/utils/guc.h,v 1.84 2007/09/03 00:39:25 tgl Exp $
*--------------------------------------------------------------------
*/
#ifndef GUC_H
@ -188,7 +188,9 @@ extern void ProcessConfigFile(GucContext context);
extern void InitializeGUCOptions(void);
extern bool SelectConfigFiles(const char *userDoption, const char *progname);
extern void ResetAllOptions(void);
extern void AtEOXact_GUC(bool isCommit, bool isSubXact);
extern void AtStart_GUC(void);
extern int NewGUCNestLevel(void);
extern void AtEOXact_GUC(bool isCommit, int nestLevel);
extern void BeginReportingGUCOptions(void);
extern void ParseLongOption(const char *string, char **name, char **value);
extern bool set_config_option(const char *name, const char *value,
@ -205,7 +207,8 @@ extern void ResetPGVariable(const char *name, bool isTopLevel);
extern char *flatten_set_variable_args(const char *name, List *args);
extern void ProcessGUCArray(ArrayType *array, GucSource source);
extern void ProcessGUCArray(ArrayType *array,
GucContext context, GucSource source, bool isLocal);
extern ArrayType *GUCArrayAdd(ArrayType *array, const char *name, const char *value);
extern ArrayType *GUCArrayDelete(ArrayType *array, const char *name);