我写了下面的查询
SELECT distcd,blkcd,schcd,entry_date,mobile_no,
class1,class2,class3,class4,class5,class6,class7,class8,class9,class10,
class11,class12
FROM adhoc_studentatt_details_prv
WHERE SCHCD='20130100101' AND entry_date='2019-05-01 00:00:00' and mobile_no='9801355122'
请帮帮我。
最佳答案
您需要 MAX()
和 GROUP BY
,以获得您想要的输出。
它将按 distcd、blkcd、schcd、entry_date、mobile_no
对列进行分组,并在一行中返回结果。
SELECT distcd,
blkcd,
schcd,
entry_date,
mobile_no,
MAX(class1) AS class1,
MAX(class2) AS class2,
MAX(class3) AS class3,
MAX(class4) AS class4,
MAX(class5) AS class5,
MAX(class6) AS class6,
MAX(class7) AS class7,
MAX(class8) AS class8,
MAX(class9) AS class9,
MAX(class10) AS class10,
MAX(class11) AS class11,
MAX(class12) AS class12
FROM adhoc_studentatt_details_prv
WHERE SCHCD = '20130100101'
AND entry_date = '2019-05-01 00:00:00'
AND mobile_no = '9801355122'
GROUP BY distcd, blkcd, schcd, entry_date, mobile_no
关于mysql - 我想根据 schcd、entry_date 和 mobile_no 在单行中显示数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56460799/