简单百分比更新

Question

我需要计算credit_total列以反映invoice_total的10％。我请求社区的帮助。

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';