diff -r 0cef3540b69f -r 922d7fb63384 pgtoolkit/pgbrowser.py
--- a/pgtoolkit/pgbrowser.py	Mon Jul 09 10:29:47 2012 +0200
+++ b/pgtoolkit/pgbrowser.py	Fri Aug 17 11:07:22 2012 +0200
@@ -42,11 +42,13 @@
         
 
 class Constraint:
-    def __init__(self, browser, table, name, type, definition):
+    def __init__(self, browser, table, name, type, fname, fschema, definition):
         self.browser = browser
         self.table = table
         self.name = name
         self.type = type
+        self.fname = fname  # foreign table name
+        self.fschema = fschema  # foreign table schema
         self.definition = definition
 
 
@@ -211,7 +213,7 @@
     def list_columns(self, table, schema='public', order=2):
         return self._query('''
             SELECT
-                a.attrelid,
+                --a.attrelid,
                 a.attname as "name",
                 format_type(a.atttypid, a.atttypmod) AS "type",
                 a.attnotnull as "notnull",
@@ -261,6 +263,24 @@
             ORDER BY i.indisprimary DESC, i.indisunique DESC, c2.relname
             ''', {'schema': schema, 'table': table})
 
+    def list_sequences(self, schema=None):
+        '''List sequences in schema.'''
+        return self._query('''
+            SELECT
+                nc.nspname AS "sequence_schema",
+                c.relname AS "sequence_name",
+                t.relname AS "related_table",
+                a.attname AS "related_column",
+                format_type(a.atttypid, a.atttypmod) AS "related_column_type"
+            FROM pg_class c
+            JOIN pg_namespace nc ON nc.oid = c.relnamespace
+            JOIN pg_depend d ON d.objid = c.oid
+            JOIN pg_class t ON d.refobjid = t.oid
+            JOIN pg_attribute a ON (d.refobjid, d.refobjsubid) = (a.attrelid, a.attnum)
+            WHERE c.relkind = 'S' AND NOT pg_is_other_temp_schema(nc.oid)
+            ''' + (schema and ' AND nc.nspname = %(schema)s' or '') + '''
+        ''', {'schema': schema})
+
     def list_column_usage(self, table, column, schema='public'):
         '''List objects using the column.