Copy cartodb lib/sql scripts from CDB_CartodbfyTable branch

scripts-available/CDB_StringToDate.sql

@@ -0,0 +1,19 @@
+-- Convert string to date
+--
+CREATE OR REPLACE FUNCTION CDB_StringToDate(input character varying)
+RETURNS date AS $$
+DECLARE output DATE DEFAULT NULL;
+BEGIN
+    BEGIN
+        output := input::date;
+    EXCEPTION WHEN OTHERS THEN
+        BEGIN
+          SELECT to_timestamp(input::integer) INTO output;
+        EXCEPTION WHEN OTHERS THEN
+          RETURN NULL;
+        END;
+    END;
+RETURN output;
+END;
+$$
+LANGUAGE 'plpgsql' STABLE STRICT;