1. 错误描述

1 queries executed, 0 success, 1 errors, 0 warnings查询：SELECT t.`name`, DATE_FORMAT(str_to_date('
2015'
), '
%Y'
) as statisDate, ROUND(IFNULL(SUM(t.`amount`), 0), 3) AS ...错误代码： 1582Incorrect parameter count in the call to native function '
str_to_date'
执行耗时 : 0 sec传送时间 : 0 sec总耗时 : 0 sec

2. 错误原因

SELECT t.`name`, DATE_FORMAT(STR_TO_DATE('
2015'
), '
%Y'
) AS statisDate, ROUND(IFNULL(SUM(t.`amount`), 0), 3) AS amountFROM t_stu_info t WHERE 1 = 1 AND DATE_FORMAT(t.statisDate, '
%Y'
) = '
2015'
UNIONALL SELECT t.`name`, DATE_FORMAT(STR_TO_DATE('
2014'
), '
%Y'
) AS statisDate, ROUND(IFNULL(SUM(t.`amount`), 0), 3) AS amountFROM t_stu_info t WHERE 1 = 1 AND DATE_FORMAT(t.statisDate, '
%Y'
) = '
2014'


MySQL内置函数str_to_date的格式是：str_to_date(字符串,日期格式);
在这个查询SQL中却是str_to_date(字符串)，导致报错

3. 解决办法

修改查询SQL语句

SELECT t.`name`, DATE_FORMAT(STR_TO_DATE('
2015'
,'
%Y'
), '
%Y'
) AS statisDate, ROUND(IFNULL(SUM(t.`amount`), 0), 3) AS amountFROM t_stu_info t WHERE 1 = 1 AND DATE_FORMAT(t.statisDate, '
%Y'
) = '
2015'
UNIONALL SELECT t.`name`, DATE_FORMAT(STR_TO_DATE('
2014'
,'
%Y'
), '
%Y'
) AS statisDate, ROUND(IFNULL(SUM(t.`amount`), 0), 3) AS amountFROM t_stu_info t WHERE 1 = 1 AND DATE_FORMAT(t.statisDate, '
%Y'
) = '
2014'