Index: docs/CHANGELOG.html
===================================================================
--- docs/CHANGELOG.html	(revision 9916)
+++ docs/CHANGELOG.html	(working copy)
@@ -186,6 +186,7 @@
 		<li>[Fix] Do not try to create thumbnails for images we cannot open properly. (Bug #48695)</li>
 		<li>[Fix] Apply locale-independent basename() to attachment filenames. New function added: utf8_basename(). (Bug #43335 - Patch by ocean=Yohsuke)</li>
 		<li>[Fix] Adjust build_url() to not prepend $phpbb_root_path if path returned from redirect() is an URL. This fixes redirect issues with some installations and bridges. (Bug #47535)</li>
+		<li>[Fix] Correctly extract column default value when exporting PostgreSQL tables. (Bug #48955)</li>
 		<li>[Change] Change the data format of the default file ACM to be more secure from tampering and have better performance.</li>
 		<li>[Change] Add index on log_time to the log table to prevent slowdown on boards with many log entries. (Bug #44665 - Patch by bantu)</li>
 		<li>[Change] Template engine now permits to a limited extent variable includes.</li>
Index: includes/acp/acp_database.php
===================================================================
--- includes/acp/acp_database.php	(revision 9916)
+++ includes/acp/acp_database.php	(working copy)
@@ -1157,16 +1157,17 @@
 					AND (c.oid = d.adrelid)
 					AND d.adnum = " . $row['attnum'];
 			$def_res = $db->sql_query($sql_get_default);
+			$def_row = $db->sql_fetchrow($def_res);
+			$db->sql_freeresult($def_res);
 
-			if (!$def_res)
+			if (empty($def_row))
 			{
 				unset($row['rowdefault']);
 			}
 			else
 			{
-				$row['rowdefault'] = $db->sql_fetchfield('rowdefault', false, $def_res);
+				$row['rowdefault'] = $def_row['rowdefault'];
 			}
-			$db->sql_freeresult($def_res);
 
 			if ($row['type'] == 'bpchar')
 			{