Fix the comment on inherited column

The comment was wrong because it gets the child table name, and not the parent
table name. The patch fixes this.

Unfortunately, this patch still doesn't fix comments for multi-inherited table.

Fixes #277.

CHANGELOG

@@ -37,6 +37,7 @@ Changes
 
 Date       Dev Ver     Change details
 ---------- --- ------  --------------
+2010-11-12 GL  1.12.2  Fix comment on inherited columns.
 2010-11-03 GL  1.12.2  Fix frmOptions vertical size.
 2010-10-28 GL  1.12.2  Select old values when connecting to another server.
 2010-10-21 GL  1.12.2  Fix a lot of issues with length and precision in the

pgadmin/dlg/dlgTable.cpp

@@ -1263,7 +1263,7 @@ wxString dlgTable::GetSql()
             for (i=0 ; i < lbTables->GetCount() ; i++)
             {
                 if (i)
-                    sql += wxT(" ");
+                    sql += wxT(", ");
                 sql += lbTables->GetString(i);
             }
             sql += wxT(")");

pgadmin/schema/pgColumn.cpp

@@ -406,8 +406,8 @@ pgObject *pgColumnFactory::CreateObjects(pgCollection *coll, ctlTree *browser, c
         wxT("  ty.typstorage AS defaultstorage, cl.relname, na.nspname, att.attstattarget, description, cs.relname AS sername, ns.nspname AS serschema,\n")
         wxT("  (SELECT count(1) FROM pg_type t2 WHERE t2.typname=ty.typname) > 1 AS isdup, indkey,\n")
         wxT("  CASE \n")
-        wxT("       WHEN EXISTS( SELECT inhparent FROM pg_inherits WHERE inhrelid=att.attrelid )\n")
-        wxT("            THEN att.attrelid::regclass\n")
+        wxT("       WHEN inh.inhparent IS NOT NULL AND att.attinhcount>0\n")
+        wxT("            THEN inh.inhparent::regclass\n")
         wxT("       ELSE NULL\n")
         wxT("  END AS inhrelname");
 
@@ -427,6 +427,7 @@ pgObject *pgColumnFactory::CreateObjects(pgCollection *coll, ctlTree *browser, c
         wxT("  JOIN pg_namespace tn ON tn.oid=ty.typnamespace\n")
         wxT("  JOIN pg_class cl ON cl.oid=att.attrelid\n")
         wxT("  JOIN pg_namespace na ON na.oid=cl.relnamespace\n")
+        wxT("  LEFT OUTER JOIN pg_inherits inh ON inh.inhrelid=att.attrelid\n")
         wxT("  LEFT OUTER JOIN pg_type et ON et.oid=ty.typelem\n")
         wxT("  LEFT OUTER JOIN pg_attrdef def ON adrelid=att.attrelid AND adnum=att.attnum\n")
         wxT("  LEFT OUTER JOIN pg_description des ON des.objoid=att.attrelid AND des.objsubid=att.attnum\n")