sql語句
SELECT EXTRACT(EPOCH FROM (TIMESTAMP '2017-12-16 12:21:13'- TIMESTAMP '2017-12-15 12:21:00'));
=>
86413
計算兩個時間的差值更新另一個時間字段
UPDATE your_table
SET this_time=(EXTRACT(EPOCH FROM (time_a-time_b)));
sql語句
SELECT EXTRACT(EPOCH FROM (TIMESTAMP '2017-12-16 12:21:13'- TIMESTAMP '2017-12-15 12:21:00'));
=>
86413
計算兩個時間的差值更新另一個時間字段
UPDATE your_table
SET this_time=(EXTRACT(EPOCH FROM (time_a-time_b)));