MySQL Group by，我想按照＆＃39; shrn_trpr_nm＆＃39;分组。和订购

Question

define "nav"

我想通过shrn_trpr_nm进行组织，我该怎么办？

Answer 1

要同时返回其他列，您还必须获取其汇总版本，例如max()：

SELECT
    max(ptl_id) ptl_id,    -- use max()
    max(chnl_id) chnl_id,
    max(shrn_srno) shrn_srno,
    shrn_trpr_nm
FROM schd_shrn_infm
WHERE ptl_id = 'PTL_51'
AND chnl_id = 'CHNL_1'
AND schd_srno = 100000001480
GROUP BY shrn_trpr_nm    -- add this line
ORDER BY shrn_trpr_nm
LIMIT 10

由于其他列是通过WHERE子句修复的列，max()会没问题。

Answer 2

无法低估问题在哪里

只需将字段放在订单和组

中

SELECT
    ptl_id,chnl_id, shrn_srno, shrn_trpr_nm
FROM WHERE 
    ptl_id = 'PTL_51'
AND chnl_id = 'CHNL_1'
AND schd_srno = 100000001480
GROUP BY
     shrn_trpr_nm
ORDER BY
   shrn_trpr_nm
LIMIT 10