Cause SHOW DATESTYLE to produce a string that will be accepted by SET

DATESTYLE, for instance 'SQL, European' instead of
'SQL with European conventions'.  Per gripe a month or two back from
Barry Lind.

doc/src/sgml/func.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/func.sgml,v 1.158 2003/06/29 00:33:42 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/func.sgml,v 1.159 2003/07/15 19:19:55 tgl Exp $
 PostgreSQL documentation
 -->
 
@@ -6501,9 +6501,9 @@ SET search_path TO <replaceable>schema</> <optional>, <replaceable>schema</>, ..
 <programlisting>
 SELECT current_setting('datestyle');
 
-            current_setting
----------------------------------------
- ISO with US (NonEuropean) conventions
+ current_setting
+-----------------
+ ISO, US
 (1 row)
 </programlisting>
    </para>

doc/src/sgml/ref/set.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.77 2003/06/21 19:33:36 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.78 2003/07/15 19:19:56 tgl Exp $
 PostgreSQL documentation
 -->
 
@@ -154,7 +154,7 @@ SELECT setseed(<replaceable>value</replaceable>);
        for <literal>SET timezone TO <replaceable>value</></>.  The
        syntax <literal>SET TIME ZONE</literal> allows special syntax
        for the time zone specification.  Here are examples of valid
-       values:
+       values (but note some are accepted only on some platforms):
 
        <variablelist>
         <varlistentry>

doc/src/sgml/ref/show.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/show.sgml,v 1.28 2003/06/27 19:08:37 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/show.sgml,v 1.29 2003/07/15 19:19:56 tgl Exp $
 PostgreSQL documentation
 -->
 
@@ -156,9 +156,9 @@ SHOW ALL
 
 <programlisting>
 SHOW DateStyle;
-               DateStyle
----------------------------------------
- ISO with US (NonEuropean) conventions
+ DateStyle
+-----------
+ ISO, US
 (1 row)
 </programlisting>
   </para>

doc/src/sgml/release.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.196 2003/06/30 18:31:41 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.197 2003/07/15 19:19:55 tgl Exp $
 -->
 
 <appendix id="release">
@@ -24,6 +24,7 @@ CDATA means the content is "SGML-free", so you can write without
 worries about funny characters.
 -->
 <literallayout><![CDATA[
+Output of SHOW DATESTYLE is now in the same format accepted by SET DATESTYLE
 PL/Python is now an untrusted language, and is renamed to 'plpythonu'
 Dollar sign ($) is no longer allowed in operator names
 Dollar sign ($) can be a non-first character in identifiers

src/backend/commands/variable.c

@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/variable.c,v 1.79 2003/06/27 19:08:37 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/variable.c,v 1.80 2003/07/15 19:19:56 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -90,7 +90,7 @@ assign_datestyle(const char *value, bool doit, bool interactive)
 			newDateStyle = USE_SQL_DATES;
 			dcnt++;
 		}
-		else if (strncasecmp(tok, "POSTGRESQL", 8) == 0)
+		else if (strncasecmp(tok, "POSTGRES", 8) == 0)
 		{
 			newDateStyle = USE_POSTGRES_DATES;
 			dcnt++;
@@ -190,13 +190,13 @@ assign_datestyle(const char *value, bool doit, bool interactive)
 			strcpy(result, "SQL");
 			break;
 		case USE_GERMAN_DATES:
-			strcpy(result, "GERMAN");
+			strcpy(result, "German");
 			break;
 		default:
-			strcpy(result, "POSTGRESQL");
+			strcpy(result, "Postgres");
 			break;
 	}
-	strcat(result, newEuroDates ? ", EURO" : ", US");
+	strcat(result, newEuroDates ? ", European" : ", US");
 
 	/*
 	 * Finally, it's safe to assign to the global variables; the
@@ -208,36 +208,6 @@ assign_datestyle(const char *value, bool doit, bool interactive)
 	return result;
 }
 
-/*
- * show_datestyle: GUC show_hook for datestyle
- */
-const char *
-show_datestyle(void)
-{
-	static char buf[64];
-
-	switch (DateStyle)
-	{
-		case USE_ISO_DATES:
-			strcpy(buf, "ISO");
-			break;
-		case USE_SQL_DATES:
-			strcpy(buf, "SQL");
-			break;
-		case USE_GERMAN_DATES:
-			strcpy(buf, "German");
-			break;
-		default:
-			strcpy(buf, "Postgres");
-			break;
-	};
-	strcat(buf, " with ");
-	strcat(buf, ((EuroDates) ? "European" : "US (NonEuropean)"));
-	strcat(buf, " conventions");
-
-	return buf;
-}
-
 
 /*
  * TIMEZONE

src/backend/utils/misc/guc.c

@@ -10,7 +10,7 @@
  * Written by Peter Eisentraut <peter_e@gmx.net>.
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.136 2003/07/09 08:51:19 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/misc/guc.c,v 1.137 2003/07/15 19:19:56 tgl Exp $
  *
  *--------------------------------------------------------------------
  */
@@ -1265,7 +1265,7 @@ static struct config_string ConfigureNamesString[] =
 			GUC_LIST_INPUT | GUC_REPORT
 		},
 		&datestyle_string,
-		"ISO, US", assign_datestyle, show_datestyle
+		"ISO, US", assign_datestyle, NULL
 	},
 
 	{

src/include/commands/variable.h

@@ -2,7 +2,7 @@
  * variable.h
  *		Routines for handling specialized SET variables.
  *
- * $Id: variable.h,v 1.20 2003/04/25 19:45:09 tgl Exp $
+ * $Id: variable.h,v 1.21 2003/07/15 19:19:56 tgl Exp $
  *
  */
 #ifndef VARIABLE_H
@@ -10,7 +10,6 @@
 
 extern const char *assign_datestyle(const char *value,
 				 bool doit, bool interactive);
-extern const char *show_datestyle(void);
 extern const char *assign_timezone(const char *value,
 				bool doit, bool interactive);
 extern const char *show_timezone(void);

src/test/regress/expected/horology-no-DST-before-1970.out

@@ -2385,9 +2385,9 @@ DROP TABLE TEMP_TIMESTAMP;
 --
 SET DateStyle TO 'US,Postgres';
 SHOW DateStyle;
-                 DateStyle                  
---------------------------------------------
- Postgres with US (NonEuropean) conventions
+  DateStyle   
+--------------
+ Postgres, US
 (1 row)
 
 SELECT '' AS "64", d1 AS us_postgres FROM TIMESTAMP_TBL;
@@ -2555,9 +2555,9 @@ SELECT '' AS seven, f1 AS us_iso FROM ABSTIME_TBL;
 
 SET DateStyle TO 'US,SQL';
 SHOW DateStyle;
-               DateStyle               
----------------------------------------
- SQL with US (NonEuropean) conventions
+ DateStyle 
+-----------
+ SQL, US
 (1 row)
 
 SELECT '' AS "64", d1 AS us_sql FROM TIMESTAMP_TBL;
@@ -2643,9 +2643,9 @@ SELECT '' AS seven, f1 AS us_sql FROM ABSTIME_TBL;
 
 SET DateStyle TO 'European,Postgres';
 SHOW DateStyle;
-             DateStyle              
-------------------------------------
- Postgres with European conventions
+     DateStyle      
+--------------------
+ Postgres, European
 (1 row)
 
 INSERT INTO TIMESTAMP_TBL VALUES('13/06/1957');
@@ -2739,9 +2739,9 @@ SELECT '' AS seven, f1 AS european_postgres FROM ABSTIME_TBL;
 
 SET DateStyle TO 'European,ISO';
 SHOW DateStyle;
-           DateStyle           
--------------------------------
- ISO with European conventions
+   DateStyle   
+---------------
+ ISO, European
 (1 row)
 
 SELECT '' AS "65", d1 AS european_iso FROM TIMESTAMP_TBL;
@@ -2828,9 +2828,9 @@ SELECT '' AS seven, f1 AS european_iso FROM ABSTIME_TBL;
 
 SET DateStyle TO 'European,SQL';
 SHOW DateStyle;
-           DateStyle           
--------------------------------
- SQL with European conventions
+   DateStyle   
+---------------
+ SQL, European
 (1 row)
 
 SELECT '' AS "65", d1 AS european_sql FROM TIMESTAMP_TBL;

src/test/regress/expected/horology-solaris-1947.out

@@ -2385,9 +2385,9 @@ DROP TABLE TEMP_TIMESTAMP;
 --
 SET DateStyle TO 'US,Postgres';
 SHOW DateStyle;
-                 DateStyle                  
---------------------------------------------
- Postgres with US (NonEuropean) conventions
+  DateStyle   
+--------------
+ Postgres, US
 (1 row)
 
 SELECT '' AS "64", d1 AS us_postgres FROM TIMESTAMP_TBL;
@@ -2555,9 +2555,9 @@ SELECT '' AS seven, f1 AS us_iso FROM ABSTIME_TBL;
 
 SET DateStyle TO 'US,SQL';
 SHOW DateStyle;
-               DateStyle               
----------------------------------------
- SQL with US (NonEuropean) conventions
+ DateStyle 
+-----------
+ SQL, US
 (1 row)
 
 SELECT '' AS "64", d1 AS us_sql FROM TIMESTAMP_TBL;
@@ -2643,9 +2643,9 @@ SELECT '' AS seven, f1 AS us_sql FROM ABSTIME_TBL;
 
 SET DateStyle TO 'European,Postgres';
 SHOW DateStyle;
-             DateStyle              
-------------------------------------
- Postgres with European conventions
+     DateStyle      
+--------------------
+ Postgres, European
 (1 row)
 
 INSERT INTO TIMESTAMP_TBL VALUES('13/06/1957');
@@ -2739,9 +2739,9 @@ SELECT '' AS seven, f1 AS european_postgres FROM ABSTIME_TBL;
 
 SET DateStyle TO 'European,ISO';
 SHOW DateStyle;
-           DateStyle           
--------------------------------
- ISO with European conventions
+   DateStyle   
+---------------
+ ISO, European
 (1 row)
 
 SELECT '' AS "65", d1 AS european_iso FROM TIMESTAMP_TBL;
@@ -2828,9 +2828,9 @@ SELECT '' AS seven, f1 AS european_iso FROM ABSTIME_TBL;
 
 SET DateStyle TO 'European,SQL';
 SHOW DateStyle;
-           DateStyle           
--------------------------------
- SQL with European conventions
+   DateStyle   
+---------------
+ SQL, European
 (1 row)
 
 SELECT '' AS "65", d1 AS european_sql FROM TIMESTAMP_TBL;

src/test/regress/expected/horology.out

@@ -2385,9 +2385,9 @@ DROP TABLE TEMP_TIMESTAMP;
 --
 SET DateStyle TO 'US,Postgres';
 SHOW DateStyle;
-                 DateStyle                  
---------------------------------------------
- Postgres with US (NonEuropean) conventions
+  DateStyle   
+--------------
+ Postgres, US
 (1 row)
 
 SELECT '' AS "64", d1 AS us_postgres FROM TIMESTAMP_TBL;
@@ -2555,9 +2555,9 @@ SELECT '' AS seven, f1 AS us_iso FROM ABSTIME_TBL;
 
 SET DateStyle TO 'US,SQL';
 SHOW DateStyle;
-               DateStyle               
----------------------------------------
- SQL with US (NonEuropean) conventions
+ DateStyle 
+-----------
+ SQL, US
 (1 row)
 
 SELECT '' AS "64", d1 AS us_sql FROM TIMESTAMP_TBL;
@@ -2643,9 +2643,9 @@ SELECT '' AS seven, f1 AS us_sql FROM ABSTIME_TBL;
 
 SET DateStyle TO 'European,Postgres';
 SHOW DateStyle;
-             DateStyle              
-------------------------------------
- Postgres with European conventions
+     DateStyle      
+--------------------
+ Postgres, European
 (1 row)
 
 INSERT INTO TIMESTAMP_TBL VALUES('13/06/1957');
@@ -2739,9 +2739,9 @@ SELECT '' AS seven, f1 AS european_postgres FROM ABSTIME_TBL;
 
 SET DateStyle TO 'European,ISO';
 SHOW DateStyle;
-           DateStyle           
--------------------------------
- ISO with European conventions
+   DateStyle   
+---------------
+ ISO, European
 (1 row)
 
 SELECT '' AS "65", d1 AS european_iso FROM TIMESTAMP_TBL;
@@ -2828,9 +2828,9 @@ SELECT '' AS seven, f1 AS european_iso FROM ABSTIME_TBL;
 
 SET DateStyle TO 'European,SQL';
 SHOW DateStyle;
-           DateStyle           
--------------------------------
- SQL with European conventions
+   DateStyle   
+---------------
+ SQL, European
 (1 row)
 
 SELECT '' AS "65", d1 AS european_sql FROM TIMESTAMP_TBL;