phpmysql今天的总和和每月的总和

Question

我正在尝试计算今天的总销售额，但这不起作用。它有效，如果我删除日期部分...

# This works and will gives out the total:
$result = mysql_query("SELECT SUM(grand_total) AS value_sum FROM order");
$row = mysql_fetch_assoc($result);
$sum = $row['value_sum'];

# This doesn't work:
$result = mysql_query("SELECT SUM(grand_total) AS value_sum FROM new_order WHERE date = CURDATE()");
$query = mysql_query($result) or die ('Error: ' . mysql_error());
$row = mysql_fetch_assoc($result);
$sum = $row['value_sum'];

还有，请问如何才能得到这个栏目之后的月总和呢？

Answer 1

如果 date 字段是 DATETIME 类型，那么试试这个 sql 语句：

SELECT SUM(`grand_total`) AS value_sum 
FROM `order`
WHERE DATE(`date`) = CURDATE()

phpmysql今天的总和和每月的总和

php mysql today's sum and monthly sum

php

mysql

sum

date