复杂查询从我的表中获取其他DAYNAME

Question

我这里有复杂的脚本，其中会输出log和dayname 所以我的（SELECT IF（DAYNAME（effectiveDate）=＆＃39; Sunday＆＃39;，CONCAT（＆＃39; Sunday＆＃39;，log） 正在工作，但在其他情况下我想输出如果用户没有时间。输出应该只是单词SUNDAY，因为条件是用户不是日志然后SUNDAY ONLY，如果用户是LOG然后LOG +星期日单词

SELECT effectiveDate,

(SELECT

(case



when note ='REGULAR LOGGED'
THEN (SELECT IF(DAYNAME(effectiveDate) ='Sunday' ,CONCAT('Sunday',log), (SELECT DAYNAME(effectiveDate) ='Sunday' FROM schedules) )
FROM schedules WHERE schedules.effectiveDate = timesheet.date AND schedules.empid = employees.empid)


end)


FROM timesheet
WHERE
schedules.effectiveDate = timesheet.date
AND counter = '1' and empid='40'  AND timeStatus='OK' GROUP BY date ) am1,


DATE_FORMAT(effectiveDate, '%W') as DAY_OF_WEEK



FROM schedules
LEFT JOIN timesheet ON schedules.effectiveDate = timesheet.date
AND schedules.empid = timesheet.empid
LEFT JOIN employees ON schedules.empid = employees.empid

WHERE schedules.empid='40' and YEAR(effectiveDate) ='2017' and MONTH(effectiveDate) ='1' AND DATE_FORMAT(effectiveDate, '%W') ='Sunday'
GROUP BY effectiveDate ORDER BY effectiveDate ASC