将这 2 个查询合并为 1 个。它们单独工作

Question

我不是 sql 专家，我似乎无法让它工作。这是一个moodle数据库查询。

cmi.core.total_time 和 cmi.core.lesson_status 都在 prefix_scorm_scoes_track 表的元素列下。我只需要 cmi.core.lesson_status 值（下一列）= 已完成的条目，但我还需要 cmi.core.total_time 的值。

SELECT u.firstname FIRST,u.lastname LAST,c.fullname Course, st.attempt Attempt,st.value STATUS,FROM_UNIXTIME(st.timemodified,"%m-%d-%Y") DATE 
FROM prefix_scorm_scoes_track AS st 
JOIN prefix_user AS u ON st.userid=u.id
JOIN prefix_scorm AS sc ON sc.id=st.scormid
JOIN prefix_course AS c ON c.id=sc.course
WHERE st.value='completed' 
ORDER BY c.fullname, u.lastname,u.firstname, st.attempt




SELECT u.firstname FIRST,u.lastname LAST,ui.data Role,c.fullname Course, st.attempt Attempt,st.value "Completion Time",FROM_UNIXTIME(st.timemodified,"%m/%d/%y %h:%i") DATE
FROM prefix_scorm_scoes_track AS st 
JOIN prefix_user AS u ON st.userid=u.id
JOIN prefix_user_info_data AS ui ON ui.userid=u.id AND fieldid = 1
JOIN prefix_scorm AS sc ON sc.id=st.scormid
JOIN prefix_course AS c ON c.id=sc.course
WHERE st.element='cmi.core.total_time' 
ORDER BY c.fullname, u.lastname,u.firstname, st.attempt

Answer 1

SELECT u.firstname FIRST,u.lastname LAST,ui.data Role,c.fullname Course, st.attempt Attempt,st.value "Completion Time",FROM_UNIXTIME(st.timemodified,"%m/%d/%y %h:%i") DATE
FROM prefix_scorm_scoes_track AS st 
JOIN prefix_user AS u ON st.userid=u.id
JOIN prefix_user_info_data AS ui ON ui.userid=u.id AND fieldid = 1
JOIN prefix_scorm AS sc ON sc.id=st.scormid
JOIN prefix_course AS c ON c.id=sc.course
WHERE st.element='cmi.core.total_time'  or st.value='completed'
ORDER BY c.fullname, u.lastname,u.firstname, st.attempt