Sun, 19 Mar 2017 13:47:07 +0100 wenzelm more operations;
Sun, 19 Mar 2017 13:36:19 +0100 wenzelm tuned;
Sun, 19 Mar 2017 13:34:47 +0100 wenzelm proper SQL syntax (according of PostgreSQL);
(0) -30000 -10000 -3000 -1000 -300 -100 -30 -10 -3 +3 +10 +30 +100 +300 +1000 +3000 +10000 tip