From 5b47c512210fd38554edb8d3d36603f823bb26fc Mon Sep 17 00:00:00 2001
From: Javier Goizueta <jgoizueta@gmail.com>
Date: Tue, 12 Jan 2016 15:35:50 +0100
Subject: [PATCH] Add function to drop overviews

---
 scripts-available/CDB_Overviews.sql | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/scripts-available/CDB_Overviews.sql b/scripts-available/CDB_Overviews.sql
index 83e29ea..e25875b 100644
--- a/scripts-available/CDB_Overviews.sql
+++ b/scripts-available/CDB_Overviews.sql
@@ -1,3 +1,18 @@
+CREATE OR REPLACE FUNCTION CDB_DropOverviews(reloid REGCLASS)
+RETURNS void
+AS $$
+DECLARE
+    row     record;
+BEGIN
+    FOR row IN
+        SELECT * FROM CDB_Overviews(reloid)
+    LOOP
+        EXECUTE Format('DROP TABLE %I;', row.overview_table);
+        RAISE NOTICE 'Dropped overview for level %: %', row.z, row.overview_table;
+    END LOOP;
+END;
+$$ LANGUAGE PLPGSQL VOLATILE;
+
 -- Return existing overviews (if any) for a given dataset table
 -- Scope: public
 -- Parameters