Add pg_dump -X no-data-for-failed-tables option to suppress loading data

if table creation failed (the table already exists).

Martin Pitt

Author: bmomjian

doc/src/sgml/ref/pg_restore.sgml

@@ -1,4 +1,4 @@
-<!-- $PostgreSQL: pgsql/doc/src/sgml/ref/pg_restore.sgml,v 1.59 2006/03/17 16:02:47 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/ref/pg_restore.sgml,v 1.60 2006/08/01 18:21:44 momjian Exp $ -->
 
 <refentry id="APP-PGRESTORE">
  <refmeta>
@@ -360,20 +360,6 @@
       </listitem>
      </varlistentry>
 
-     <varlistentry>
-      <term><option>-X use-set-session-authorization</option></term>
-      <term><option>--use-set-session-authorization</option></term>
-      <listitem>
-       <para>
-        Output SQL-standard <command>SET SESSION AUTHORIZATION</> commands
-        instead of <command>ALTER OWNER</> commands to determine object
-        ownership.  This makes the dump more standards compatible, but
-        depending on the history of the objects in the dump, may not restore
-        properly.
-       </para>
-      </listitem>
-     </varlistentry>
-
      <varlistentry>
       <term><option>-X disable-triggers</></term>
       <term><option>--disable-triggers</></term>
@@ -397,6 +383,34 @@
       </listitem>
      </varlistentry>
 
+     <varlistentry>
+      <term><option>-X use-set-session-authorization</option></term>
+      <term><option>--use-set-session-authorization</option></term>
+      <listitem>
+       <para>
+        Output SQL-standard <command>SET SESSION AUTHORIZATION</> commands
+        instead of <command>ALTER OWNER</> commands to determine object
+        ownership.  This makes the dump more standards compatible, but
+        depending on the history of the objects in the dump, may not restore
+        properly.
+       </para>
+      </listitem>
+     </varlistentry>
+
+     <varlistentry>
+      <term><option>-X no-data-for-failed-tables</></term>
+      <listitem>
+       <para>
+       By default, table data objects are restored even if the
+       associated table could not be successfully created (e. g.
+       because it already exists). With this option, such table
+       data is silently ignored. This is useful for dumping and
+       restoring databases with tables which contain auxiliary data
+       for PostgreSQL extensions (e. g. PostGIS).
+       </para>
+      </listitem>
+     </varlistentry>
+
     </variablelist>
    </para>
 

src/bin/pg_dump/pg_backup.h

@@ -15,7 +15,7 @@
  *
  *
  * IDENTIFICATION
- *		$PostgreSQL: pgsql/src/bin/pg_dump/pg_backup.h,v 1.41 2006/07/14 14:52:26 momjian Exp $
+ *		$PostgreSQL: pgsql/src/bin/pg_dump/pg_backup.h,v 1.42 2006/08/01 18:21:44 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -109,6 +109,7 @@ typedef struct _restoreOptions
 	char	   *pghost;
 	char	   *username;
 	int			ignoreVersion;
+	int			noDataForFailedTables;
 	int			requirePassword;
 	int			exit_on_error;
 

src/bin/pg_dump/pg_backup_archiver.c

@@ -15,7 +15,7 @@
  *
  *
  * IDENTIFICATION
- *		$PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_archiver.c,v 1.134 2006/07/18 17:42:00 momjian Exp $
+ *		$PostgreSQL: pgsql/src/bin/pg_dump/pg_backup_archiver.c,v 1.135 2006/08/01 18:21:44 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -278,6 +278,23 @@ RestoreArchive(Archive *AHX, RestoreOptions *ropt)
 			_printTocEntry(AH, te, ropt, false, false);
 			defnDumped = true;
 
+			/* If we could not create a table, ignore the respective TABLE DATA if 
+			 * -X no-data-for-failed-tables is given */
+			if (ropt->noDataForFailedTables && AH->lastErrorTE == te && strcmp (te->desc, "TABLE") == 0) {
+				TocEntry *tes, *last;
+                                
+				ahlog (AH, 1, "table %s could not be created, will not restore its data\n", te->tag);
+
+				for (last = te, tes = te->next; tes != AH->toc; last = tes, tes = tes->next) {
+					if (strcmp (tes->desc, "TABLE DATA") == 0 && strcmp (tes->tag, te->tag) == 0 &&
+					    strcmp (tes->namespace ? tes->namespace : "", te->namespace ? te->namespace : "") == 0) {
+					    /* remove this node */
+					    last->next = tes->next;
+                                            break;
+					}
+				}
+			}
+
 			/* If we created a DB, connect to it... */
 			if (strcmp(te->desc, "DATABASE") == 0)
 			{

src/bin/pg_dump/pg_restore.c

@@ -34,7 +34,7 @@
  *
  *
  * IDENTIFICATION
- *		$PostgreSQL: pgsql/src/bin/pg_dump/pg_restore.c,v 1.79 2006/07/14 14:52:26 momjian Exp $
+ *		$PostgreSQL: pgsql/src/bin/pg_dump/pg_restore.c,v 1.80 2006/08/01 18:21:44 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -252,6 +252,8 @@ main(int argc, char **argv)
 					use_setsessauth = 1;
 				else if (strcmp(optarg, "disable-triggers") == 0)
 					disable_triggers = 1;
+				else if (strcmp(optarg, "no-data-for-failed-tables") == 0)
+					opts->noDataForFailedTables = 1;
 				else
 				{
 					fprintf(stderr,
@@ -397,6 +399,9 @@ usage(const char *progname)
 	printf(_("  -X use-set-session-authorization, --use-set-session-authorization\n"
 			 "                           use SESSION AUTHORIZATION commands instead of\n"
 			 "                           OWNER TO commands\n"));
+	printf(_("  -X no-data-for-failed-tables\n"
+			 "                           do not restore data of tables which could not be\n"
+			 "                           created\n"));
 	printf(_("  -1, --single-transaction restore as a single transaction\n"));
 
 	printf(_("\nConnection options:\n"));