我一直在四处寻找，但我还没有找到解决方案，所以我想我会在这里问。我有这个查询，它返回 1241 错误。我究竟做错了什么？
SELECT
EMP_FORMAL,
employee.EMP_ID,
ROUND(ROUND(SUM(TIME_TO_SEC(TIMEDIFF(UREN_EIND,UREN_BEGIN))/3600),2)/(od_employee_extra.uren*0,4)*100, 2) AS SOM,
ROUND(SUM(TIME_TO_SEC(TIMEDIFF(UREN_EIND,UREN_BEGIN))/3600),2) AS UREN,
ROUND(SUM(TIME_TO_SEC(IF(IS_OPBON, TIMEDIFF(UREN_EIND,UREN_BEGIN), 0))/3600),2) AS FACTUUR_UREN,
od_employee_extra.uren*0,4 AS TOTAAL_UREN,
WEEK(UREN_DATUM,1) AS NUM
FROM
od_pc_common.urenreg
INNER JOIN
od_pc_common.employee ON (urenreg.EMP_ID = employee.EMP_ID)
INNER JOIN
od_common_settings.od_employee_extra ON (employee.EMP_ID = od_common_settings.od_employee_extra.EMP_ID AND employee.EMP_GROEP = od_employee_extra.EMP_GROUP)
WHERE
YEAR(UREN_DATUM) = 2014 AND
UREN_DATUM <= NOW() AND
employee.IS_ACTIVE = 1
GROUP BY
WEEK(UREN_DATUM, 1),
urenreg.EMP_ID
HAVING
NUM = 31;
ORDER BY
EMP_FORMAL ASC
提前致谢。;)
编辑：我只是想出了问题所在。我们用逗号（“0,4”）标记的浮点数，而 Sql 语法使用点（“0.4”）代替。