簡單百分比更新

Question

我需要計算credit_total列以反映invoice_total的10％。我請求社區的善意幫助。

UPDATE invoices 
SET credit_total = '.10' 
WHERE invoice_number = 'AX-014-027'; 

Answer 1

使用*：

UPDATE invoices 
    SET credit_total = invoice_total * 0.10 
    WHERE invoice_number = 'AX-014-027';