sql

lib/sql/scripts-available/CDB_DateToNumber.sql

@@ -0,0 +1,31 @@
+-- Convert timestamp to double precision
+--
+CREATE OR REPLACE FUNCTION @extschema@.CDB_DateToNumber(input timestamp)
+RETURNS double precision AS $$
+DECLARE output double precision;
+BEGIN
+    BEGIN
+        SELECT extract (EPOCH FROM input) INTO output;
+    EXCEPTION WHEN OTHERS THEN
+        RETURN NULL;
+    END;
+RETURN output;
+END;
+$$
+LANGUAGE 'plpgsql' IMMUTABLE STRICT PARALLEL UNSAFE;
+
+-- Convert timestamp with time zone to double precision
+--
+CREATE OR REPLACE FUNCTION @extschema@.CDB_DateToNumber(input timestamp with time zone)
+RETURNS double precision AS $$
+DECLARE output double precision;
+BEGIN
+    BEGIN
+        SELECT extract (EPOCH FROM input) INTO output;
+    EXCEPTION WHEN OTHERS THEN
+        RETURN NULL;
+    END;
+RETURN output;
+END;
+$$
+LANGUAGE 'plpgsql' IMMUTABLE STRICT PARALLEL UNSAFE;