SELECT a.co1
,CASE WHEN LEFT(hangye,2)in(13,14,15,16) THEN '食品'
WHEN LEFT(hangye,2)in(17,18,19,28) THEN '纺织' ELSE '其他' END AS Leixing
,a.zhandi
,shuishou
,xiaoshou
FROM table1 a
WHERE 1 = 1 作者:志城 https://www.bilibili.com/read/cv9186138/ 出处:bilibili
自己写的:
SELECT count(1),case when FPGCDM in ('00007','00025','00026','00027') then '人南校区'
when FPGCDM in ('00012','00023','00024','2301') then '彭州校区'
when FPGCDM = '00014' then '宜宾校区'
else '本部校区' end as XQ
from bigdata_book_information
WHERE RCRQ <= CONCAT(YEAR(NOW()) - 1, "0831") and skztm not in ('34','35','36','37','38','3B','3c')
GROUP BY XQ