--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/listdepends.py	Mon Mar 05 18:36:46 2012 +0100
@@ -0,0 +1,25 @@
+#!/usr/bin/env python3.2
+
+from pgtoolkit import pgbrowser, toolbase, prettysize
+
+
+class ListDependsTool(toolbase.SimpleTool):
+    def __init__(self):
+        toolbase.SimpleTool.__init__(self, name='listdepends', desc='List column dependencies.')
+        self.parser.add_argument('table', metavar='table', type=str, help='Table name.')
+        self.parser.add_argument('column', metavar='column', type=str, help='Column name.')
+        self.parser.add_argument('-s', '--schema', dest='schema', metavar='schema',
+            type=str, default='public', help='Schema name (default=public).')
+        self.init()
+
+    def main(self):
+        browser = pgbrowser.PgBrowser(self.pgm.get_conn('target'))
+
+        objects = browser.list_column_usage(self.args.table, self.args.column, schema=self.args.schema)
+        for obj in sorted(objects, key=lambda x: (x['type'], x['schema'], x['name'])):
+            print(obj['type'], ' ', obj['schema'], '.', obj['name'], sep='')
+
+
+tool = ListDependsTool()
+tool.main()
+