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最新多種方式, 判斷客戶端IP是國內(nèi)還是國外？
Sandm_x: 高德地圖的api也不錯 Spring Boot手把手教學(xué)(14)：如何對Spring Boot配置文件加密
O???ver again ??:
防誰呢 intrasigent: with conn.cursor(cursorclass=MySQLdb.cursors.DictCursor) as cursor: cursor() got an unexpected keyword argument 'cursorclass' 請問您知道這是什么原因嗎 MYSQL50道基礎(chǔ)練習(xí)題hzm_1989: 08還請排查下 SELECT -> *, -> COUNT(DISTINCT b.cid) count -> FROM -> Student a -> LEFT JOIN sc b on a.sid = b.sid GROUP BY b.sid -> > 1055 - Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'xuexiao.a.sid' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by 這樣寫可以查詢： select student.sid,student.sname, student.sage,student.ssex, count(sc.cid) from student LEFT JOIN sc ON student.sid = sc.sid group by student.sid,student.sname, student.sage,student.ssex having count(sc.cid) < (select count(cid) from course); MYSQL50道基礎(chǔ)練習(xí)題hzm_1989: mysql> select b.*, a.score -> from sc a, student b -> where a.sid = b.sid -> group by a.sid; ERROR 1055 (42000): Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'xuexiao.b.sname' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by 04還請排查下；mysql上執(zhí)行失敗 |
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