是否可以将GROUP_CONCAT放在MYSQLWHERE子句中？我有两张表(一张用于成员(member)，一张用于支付信息)。例如成员表num,memNumber,fullName,coporateName,surname001,mem0010,JoeBloggs,NULL,Bloggs002,mem0015,NULL,BBC003,mem0017,JohnPeters,NULL004,mem0101,EmmaJane,NULL付款表num,memberID,subscriptionYear,amount001,mem0010,2008,30003,mem0010,2010,4000