From e2b42aef53da08dfdcd30b5ffee543b65993ae3d Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <peter_e@gmx.net>
Date: Fri, 3 Jul 2009 18:56:50 +0000
Subject: [PATCH] Have \d show child tables that inherit from the specified
 parent

As per discussion, \d shows only the number of child tables, because that
could be hundreds, when used for partitioning.  \d+ shows the actual list.

Author: Damien Clochard <damien@dalibo.info>
---
 src/bin/psql/describe.c | 40 +++++++++++++++++++++++++++++++++++++++-
 1 file changed, 39 insertions(+), 1 deletion(-)

diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c
index cde2428259..751af1c379 100644
--- a/src/bin/psql/describe.c
+++ b/src/bin/psql/describe.c
@@ -8,7 +8,7 @@
  *
  * Copyright (c) 2000-2009, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.218 2009/06/13 13:43:34 petere Exp $
+ * $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.219 2009/07/03 18:56:50 petere Exp $
  */
 #include "postgres_fe.h"
 
@@ -1814,6 +1814,44 @@ describeOneTableDetails(const char *schemaname,
 		}
 		PQclear(result);
 
+		/* print child tables */
+		printfPQExpBuffer(&buf, "SELECT c.oid::pg_catalog.regclass FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i WHERE c.oid=i.inhrelid AND i.inhparent = '%s' ORDER BY c.oid::pg_catalog.regclass;", oid);
+
+		result = PSQLexec(buf.data, false);
+		if (!result)
+			goto error_return;
+		else
+			tuples = PQntuples(result);
+
+		if (!verbose)
+		{
+			/* print the number of child tables, if any */
+			if (tuples > 0)
+			{
+				printfPQExpBuffer(&buf, _("Number of child tables: %d (Use \\d+ to list them.)"), tuples);
+				printTableAddFooter(&cont, buf.data);
+			}
+		}
+		else
+		{
+			/* display the list of child tables*/
+			for (i = 0; i < tuples; i++)
+                	{
+                        	const char *ct = _("Child tables");
+
+                        	if (i == 0)
+                                	printfPQExpBuffer(&buf, "%s: %s", ct, PQgetvalue(result, i, 0));
+                        	else
+                                	printfPQExpBuffer(&buf, "%*s  %s", (int) strlen(ct), "", PQgetvalue(result, i, 0));
+                        	if (i < tuples - 1)
+                                	appendPQExpBuffer(&buf, ",");
+
+                        	printTableAddFooter(&cont, buf.data);
+                	}
+		}
+		PQclear(result);
+
+		/* OIDs and options */
 		if (verbose)
 		{
 			const char *s = _("Has OIDs");