+
+-- This function must be dropped manually because PostgreSQL cannot
+-- rename function parameters with 'CREATE OR REPLACE FUNCTION ...'
+-- anymore.
+DROP FUNCTION update_requirement_spec_item_time_estimation(item_id INTEGER, requirement_spec_id INTEGER);
+CREATE FUNCTION update_requirement_spec_item_time_estimation(item_id INTEGER, item_requirement_spec_id INTEGER) RETURNS BOOLEAN AS $$