在查詢中跨行相乘

Question

我有表中的行，我想乘以所有值由自己，但無法弄清楚如何使其工作。

SELECT exp(bet_odd) as odds 
FROM betting 

Answer 1

嘗試用

SELECT EXP(SUM(LOG(bet_odd))) as odds 
FROM betting 

源： Multiplication of data from MySQL row：