删除由WITH ROLLUP造成的第二行

Question

我需要从第一行中删除包含总记录副本的第二行结果。我的结果集如下

1 | 1025

1 | NULL ---我需要删除此行

我的查询如下：

SELECT SUM(mdl_quiz.fcpd) AS cpdtotal, mdl_user.id AS userid 
FROM mdl_grade_grades 
INNER JOIN mdl_user ON mdl_grade_grades.userid = mdl_user.id 
INNER JOIN mdl_grade_items ON mdl_grade_grades.itemid = mdl_grade_items.id 
INNER JOIN mdl_quiz ON mdl_grade_items.itemname = mdl_quiz.name 
INNER JOIN mdl_course ON mdl_grade_items.courseid = mdl_course.id 
INNER JOIN mdl_user_info_data ON mdl_user.id = mdl_user_info_data.userid 
WHERE mdl_user_info_data.fieldid =1 
AND mdl_grade_items.itemname IS NOT NULL 
AND mdl_user.annualCPDReportActive = 'Y' 
AND (
    mdl_course.category =27 
    ) 
AND mdl_user.id =1025 
AND YEAR(FROM_UNIXTIME(mdl_grade_grades.timemodified)) =2013 
GROUP BY mdl_user.id 
WITH ROLLUP 

Answer 1

您应该删除WITH ROLLUP 更多信息here。