diff --git a/sql/col_interval.sql b/sql/col_interval.sql
new file mode 100644
index 0000000..176004d
--- /dev/null
+++ b/sql/col_interval.sql
@@ -0,0 +1,27 @@
+DO
+$$
+DECLARE
+    clist text;
+
+BEGIN
+-------------------------------build a column list----------------------------------------
+SELECT 
+    string_agg(
+        format('%I',cname) || CASE WHEN func IN ('odate','sdate') THEN ' + interval ''1 year''' ELSE '' END,E'\n,' ORDER BY opos ASC)
+INTO
+    clist
+FROM 
+    fc.target_meta 
+WHERE 
+    func NOT IN ('version');
+
+RAISE NOTICE 'build list: %',clist;
+
+CREATE TEMP TABLE sql(t text);
+
+INSERT INTO sql SELECT clist;
+
+END
+$$;
+
+select * from sql;