MySQL语句不正确

Question

select   substring(member.own,3,4),  count (*)
 from member, amphur 
Where amphur.AMPHUR_CODE  = substring(member.own,3,4)
group by substring(member.own,3,4)

  

1064 - 您的SQL语法出错;查看与您的MySQL服务器版本对应的手册，以便在成员，amphur附近的'*）附近使用正确的语法。其中amphur.AMPHUR_CODE = substring（member.own，3,4）g'在第1行

Answer 1

删除COUNT和(*)之间的空格。如果有空格，MySQL不会将“count”识别为函数。

Answer 2

SELECT SUBSTRING(m.own,3,4), 
         COUNT(* ) AS cnt 
    FROM MEMBER AS m, 
         amphur AS a 
   WHERE a.AMPHUR_CODE COLLATE utf8_general_ci = SUBSTRING(m.own,3,4) 
GROUP BY SUBSTRING(m.own,3,4)