亚洲国产日韩欧美一区二区三区,精品亚洲国产成人av在线,国产99视频精品免视看7,99国产精品久久久久久久成人热,欧美日韩亚洲国产综合乱

mysql - Find SQL statement
黃舟
黃舟 2017-05-18 10:50:09
0
2
890


How to use SQL statements to realize the sum of each column in Total One, Total Two, and Total Three?

黃舟
黃舟

人生最曼妙的風(fēng)景,竟是內(nèi)心的淡定與從容!

reply all(2)
巴扎黑
select sum(num) from table group by title;
洪濤

Are total one, total two and total three the column names of three columns? Do you want to calculate the sum of these three columns respectively?
If that’s what you mean, then try
select sum(合計一) from 表名;
Calculate the sum of one column in this way, and the other two are the same

Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template