mirror of https://github.com/postgres/postgres
Massimo's SET FSYNC and SHOW PG_OPTIONS changes, without SET QUERY_LIMIT.
This commit is contained in:
Bruce Momjian
parent
5a017b96ad
commit
d62a7ac6d3
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@ -1,119 +0,0 @@
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From owner-pgsql-general@hub.org Fri Oct 9 18:22:09 1998
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Date: Fri, 9 Oct 1998 18:18:00 -0400 (EDT)
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From: Steve Doliov <statsol@statsol.com>
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To: pgsql-general@postgreSQL.org
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Subject: Re: [GENERAL] Making NULLs visible.
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Status: RO
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On Fri, 9 Oct 1998, Bruce Momjian wrote:
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> [Charset iso-8859-1 unsupported, filtering to ASCII...]
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> > > Yes, \ always outputs as \\, excepts someone changed it last week, and I
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> > > am requesting a reversal. Do you like the \N if it is unique?
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> >
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> > Well, it's certainly clear, but could be confused with \n (newline). Can we
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> > have \0 instead?
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>
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> Yes, but it is uppercase. \0 looks like an octal number to me, and I
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> think we even output octals sometimes, don't we?
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>
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my first suggestion may have been hare-brained, but why not just make the
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specifics of the output user-configurable. So if the user chooses \0, so
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be it, if the user chooses \N so be it, if the user likes NULL so be it.
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but the option would only have one value per database at any given point
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in time. so database x could use \N on tuesday and NULL on wednesday, but
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database x could never have two references to the characters(s) used to
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represent a null value.
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steve
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From owner-pgsql-general@hub.org Sun Oct 11 17:31:08 1998
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Date: Sun, 11 Oct 1998 16:28:41 -0400 (EDT)
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From: Thomas Good <tomg@admin.nrnet.org>
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To: pgsql-general@postgreSQL.org
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Subject: Re: [GENERAL] Making NULLs visible.
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In-Reply-To: <Pine.GSO.3.96.981009181716.545B-100000@gecko>
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Status: RO
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Watching all this go by...as a guy who has to move alot of data
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from legacy dbs to postgres, I've gotten used to \N being a null.
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My vote, if I were allowed to cast one, would be to have one null
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and that would be the COPY command null. I have no difficulty
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distinguishing a null from a newline...
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At the pgsql command prompt I would find seeing \N rather reassuring.
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I've seen alot of these little guys.
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---------- Sisters of Charity Medical Center ----------
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Department of Psychiatry
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----
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Thomas Good <tomg@q8.nrnet.org>
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Coordinator, North Richmond C.M.H.C. Information Systems
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75 Vanderbilt Ave, Quarters 8 Phone: 718-354-5528
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Staten Island, NY 10304 Fax: 718-354-5056
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@ -7,7 +7,7 @@
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* Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/bootstrap/bootstrap.c,v 1.67 1999/09/18 19:06:27 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/bootstrap/bootstrap.c,v 1.68 1999/09/27 20:26:58 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -134,7 +134,6 @@ static char *relname; /* current relation name */
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Form_pg_attribute attrtypes[MAXATTR]; /* points to attribute info */
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static char *values[MAXATTR]; /* cooresponding attribute values */
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int numattr; /* number of attributes for cur. rel */
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extern bool disableFsync; /* do not fsync the database */
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int DebugMode;
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static GlobalMemory nogc = (GlobalMemory) NULL; /* special no-gc mem
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@ -2,7 +2,7 @@
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* Routines for handling of 'SET var TO',
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* 'SHOW var' and 'RESET var' statements.
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*
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* $Id: variable.c,v 1.25 1999/07/17 20:16:54 momjian Exp $
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* $Id: variable.c,v 1.26 1999/09/27 20:27:03 momjian Exp $
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*
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*/
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@ -11,11 +11,13 @@
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#include "postgres.h"
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#include "access/xact.h"
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#include "catalog/pg_shadow.h"
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#include "commands/variable.h"
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#include "miscadmin.h"
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#include "optimizer/internal.h"
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#include "utils/builtins.h"
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#include "utils/tqual.h"
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#include "utils/trace.h"
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#ifdef MULTIBYTE
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#include "mb/pg_wchar.h"
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@ -528,6 +530,36 @@ reset_timezone()
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return TRUE;
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} /* reset_timezone() */
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/*
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* Pg_options
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*/
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static bool
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parse_pg_options(const char *value)
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{
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if (!superuser()) {
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elog(ERROR, "Only users with superuser privilege can set pg_options");
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}
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parse_options((char *) value, TRUE);
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return (TRUE);
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}
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static bool
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show_pg_options(void)
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{
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show_options();
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return (TRUE);
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}
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static bool
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reset_pg_options(void)
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{
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if (!superuser()) {
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elog(ERROR, "Only users with superuser privilege can set pg_options");
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}
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read_pg_options(0);
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return (TRUE);
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}
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/*-----------------------------------------------------------------------*/
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struct VariableParsers
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@ -568,6 +600,9 @@ struct VariableParsers
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{
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"XactIsoLevel", parse_XactIsoLevel, show_XactIsoLevel, reset_XactIsoLevel
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},
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{
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"pg_options", parse_pg_options, show_pg_options, reset_pg_options
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},
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{
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NULL, NULL, NULL, NULL
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}
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/utils/init/globals.c,v 1.36 1999/07/17 20:18:08 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/utils/init/globals.c,v 1.37 1999/09/27 20:27:09 momjian Exp $
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*
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* NOTES
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* Globals used all over the place should be declared here and not
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@ -76,7 +76,6 @@ char DateFormat[20] = "%d-%m-%Y"; /* mjl: sizes! or better
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* malloc? XXX */
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char FloatFormat[20] = "%f";
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bool disableFsync = false;
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bool allowSystemTableMods = false;
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int SortMem = 512;
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@ -73,6 +73,7 @@ static char *opt_names[] = {
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"lock_debug_relid",
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"lock_read_priority", /* lock priority, see lock.c */
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"deadlock_timeout", /* deadlock timeout, see proc.c */
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"nofsync", /* turn fsync off */
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"syslog", /* use syslog for error messages */
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"hostlookup", /* enable hostname lookup in ps_status */
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"showportnumber", /* show port number in ps_status */
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@ -405,6 +406,16 @@ read_pg_options(SIGNAL_ARGS)
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close(fd);
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}
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void
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show_options(void)
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{
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int i;
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for (i=0; i<NUM_PG_OPTIONS; i++) {
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elog(NOTICE, "%s=%d", opt_names[i], pg_options[i]);
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}
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}
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/*
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* Local variables:
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* tab-width: 4
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@ -5,7 +5,7 @@
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: psqlHelp.h,v 1.74 1999/09/23 17:11:16 momjian Exp $
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* $Id: psqlHelp.h,v 1.75 1999/09/27 20:27:20 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -296,7 +296,7 @@ static struct _helpStruct QL_HELP[] = {
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{"reset",
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"set run-time environment back to default",
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"\
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\tRESET DATESTYLE|COST_HEAP|COST_INDEX|GEQO|KSQO|\n\
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\tRESET DATESTYLE|COST_HEAP|COST_INDEX|GEQO|KSQO|PG_OPTIONS|\n\
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TIMEZONE|XACTISOLEVEL|CLIENT_ENCODING|SERVER_ENCODING"},
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{"revoke",
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"revoke access control from a user or group",
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@ -329,6 +329,7 @@ TIMEZONE|XACTISOLEVEL|CLIENT_ENCODING|SERVER_ENCODING"},
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\tSET COST_INDEX TO #\n\
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\tSET GEQO TO 'ON[=#]'|'OFF'\n\
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\tSET KSQO TO 'ON'|'OFF'\n\
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\tSET PG_OPTIONS TO 'value'\n\
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\tSET TIMEZONE TO 'value'\n\
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\tSET TRANSACTION ISOLATION LEVEL 'SERIALIZABLE'|'READ COMMITTED'\n\
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\tSET CLIENT_ENCODING|NAMES TO 'EUC_JP'|'SJIS'|'EUC_CN'|'EUC_KR'|'EUC_TW'|\n\
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@ -340,7 +341,7 @@ TIMEZONE|XACTISOLEVEL|CLIENT_ENCODING|SERVER_ENCODING"},
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{"show",
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"show current run-time environment",
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"\
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\tSHOW DATESTYLE|COST_HEAP|COST_INDEX|GEQO|KSQO|\n\
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\tSHOW DATESTYLE|COST_HEAP|COST_INDEX|GEQO|KSQO|PG_OPTIONS|\n\
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TIMEZONE|XACTISOLEVEL|CLIENT_ENCODING|SERVER_ENCODING"},
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{"unlisten",
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"stop listening for notification on a condition name",
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@ -11,7 +11,7 @@
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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* $Id: miscadmin.h,v 1.41 1999/09/24 00:25:16 tgl Exp $
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* $Id: miscadmin.h,v 1.42 1999/09/27 20:27:26 momjian Exp $
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*
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* NOTES
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* some of the information in this file will be moved to
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@ -22,6 +22,8 @@
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#ifndef MISCADMIN_H
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#define MISCADMIN_H
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#include "utils/trace.h"
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/*****************************************************************************
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* globals.h -- *
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*****************************************************************************/
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@ -93,7 +95,7 @@ extern char CTZName[];
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extern char FloatFormat[];
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extern char DateFormat[];
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extern bool disableFsync;
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#define disableFsync pg_options[OPT_NOFSYNC]
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extern bool allowSystemTableMods;
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extern int SortMem;
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@ -26,6 +26,7 @@ char *tprintf_timestamp(void);
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extern int tprintf(int flag, const char *fmt,...);
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extern int eprintf(const char *fmt,...);
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extern void write_syslog(int level, char *line);
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extern void show_options(void);
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extern void parse_options(char *str, bool secure);
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extern void read_pg_options(SIGNAL_ARGS);
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@ -57,6 +58,7 @@ enum pg_option_enum {
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TRACE_LOCKRELATION,
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OPT_LOCKREADPRIORITY, /* lock priority, see lock.c */
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OPT_DEADLOCKTIMEOUT, /* deadlock timeout, see proc.c */
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OPT_NOFSYNC, /* turn fsync off */
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OPT_SYSLOG, /* use syslog for error messages */
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OPT_HOSTLOOKUP, /* enable hostname lookup in ps_status */
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OPT_SHOWPORTNUMBER, /* show port number in ps_status */
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