From 51956f409ec7ebea8b6790b0c5d4f0b51513d683 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sun, 15 Sep 2013 12:46:09 +0200
Subject: Cleanup polymorphic base tables when dropping derived one

---
 odb/relational/pgsql/schema.cxx | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'odb/relational/pgsql')

diff --git a/odb/relational/pgsql/schema.cxx b/odb/relational/pgsql/schema.cxx
index f127b95..1cf57f1 100644
--- a/odb/relational/pgsql/schema.cxx
+++ b/odb/relational/pgsql/schema.cxx
@@ -29,7 +29,16 @@ namespace relational
         virtual void
         traverse (sema_rel::table& t, bool migration)
         {
-          // For PostgreSQL we use the CASCADE clause to drop foreign keys.
+          // For migration drop foreign keys explicitly in pre-migration.
+          //
+          if (migration)
+          {
+            base::traverse (t, migration);
+            return;
+          }
+
+          // For schema creation we use the CASCADE clause to drop foreign
+          // keys.
           //
           if (pass_ != 2)
             return;
-- 
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