Question

| iID | saleID | cusID | date       | total | discount | advance | paid_status |

+-----+--------+-------+------------+-------+----------+---------+-------------+

|  16 |      1 |     1 | 2014-01-17 |  2400 |      100 |    1000 |           1 |

|  17 |      1 |     1 | 2014-02-17 |   240 |      100 |    1000 |           1 |

|  18 |      1 |     1 | 2013-03-17 |   280 |      100 |    1000 |           1 |

|  19 |      1 |     1 | 2014-04-18 |   120 |      100 |    1000 |           1 |

基本上我有上面显示的数据库。我想得到每个月的总和，但具体年份

当我使用此查询时，它可以正常运行，但由于我没有指定年份，因此它不会仅给出特定的年份

SELECT sum(total) FROM `invoice_reg` group by month(date) ;

但是当我使用where子句时，它没有工作给我一个错误

SELECT sum(total) FROM `invoice_reg` group by month(date) where YEAR(date) = 2014

我也尝试过这个。但是也是很好的

SELECT sum(total) FROM `invoice_reg` group by month(date) where DATE_FORMAT(date,'%Y')=2014

这是我得到的错误

check the manual that corresponds to your MySQL server version for the right syntax to use near 'where YEAR(date) = 2014

任何帮助将不胜感激

Answer 1

尝试将group by语句移动到命令的末尾

Answer 2

请在where

之前使用group by

http://dev.mysql.com/doc/refman/5.0/en/select.html

Answer 3

你可以这样试试

SELECT monthly_total FROM 
     ( 
     SELECT 
        sum(total) as monthly_total,YEAR(date) as yr 
     FROM `invoice_reg` 
     GROUP BY month(date) 
     ) t
WHERE yr = 2014

Answer 4

SELECT sum(total) FROM `invoice_reg` 
where YEAR(date) = year(now())
group by month(date)

Answer 5

试试这个：

SELECT sum(total) 
FROM invoice_reg 
WHERE year(date) = 2014
GROUP BY month(date)

mysql where子句给我一个错误

5 个答案: