Mysql 销售总成本的15%

很难计算出销售表总额的15%

这是我到目前为止得到的（总数）。难以在同一查询中显示总销售额和15%的销售额

SELECT SUM(prices) AS total sales FROM sales;

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您只需将总和乘以0.15即可：

SELECT SUM(prices) AS total_sales,
       SUM(prices) * 0.15 AS fifteen_percent
FROM   sales;

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您只需将总和乘以0.15即可：

SELECT SUM(prices) AS total_sales,
       SUM(prices) * 0.15 AS fifteen_percent
FROM   sales;

选择总和（价格）作为总销售额，总和（价格）*0.15作为销售额的15%；选择总和（价格）作为总销售额，总和（价格）*0.15作为销售额的15%；