Index: trunk/kernel/units/config_search/config_search_config.php
===================================================================
diff -u -N -r4809 -r4810
--- trunk/kernel/units/config_search/config_search_config.php	(.../config_search_config.php)	(revision 4809)
+++ trunk/kernel/units/config_search/config_search_config.php	(.../config_search_config.php)	(revision 4810)
@@ -80,13 +80,13 @@
 								            'SearchConfigId' => Array('type' => 'int','not_null' => '1','default' => ''),
 								            'Priority' => Array('type' => 'int','not_null' => '1','default' => '0'),
 								            'FieldType' => Array('type' => 'string', 'formatter' => 'kOptionsFormatter', 'options' => Array('text' => 'text', 'range' => 'range', 'boolean' => 'boolean', 'date' => 'date'), 'not_null' => '1', 'required' => 1, 'default' => 'text'),
-								            'ForeignField' => Array('type' => 'string','default' => ''),
-								            'JoinClause' => Array('type' => 'string','default' => ''),
-								            'IsWhere' => Array('type' => 'string','default' => ''),
-								            'IsNotWhere' => Array('type' => 'string','default' => ''),
-								            'ContainsWhere' => Array('type' => 'string','default' => ''),
-								            'NotContainsWhere' => Array('type' => 'string','default' => ''),
-								            'CustomFieldId' => Array('type' => 'int', 'default' => ''),
+								            'ForeignField' => Array('type' => 'string','default' => null),
+								            'JoinClause' => Array('type' => 'string','default' => null),
+								            'IsWhere' => Array('type' => 'string','default' => null),
+								            'IsNotWhere' => Array('type' => 'string','default' => null),
+								            'ContainsWhere' => Array('type' => 'string','default' => null),
+								            'NotContainsWhere' => Array('type' => 'string','default' => null),
+								            'CustomFieldId' => Array('type' => 'int', 'default' => null),
 											),
 
 					'VirtualFields'	=> 	Array(