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Query1.SQL.Add('select * from CW_USER where USERNAME= ''' + dlyhm + ''' and CW_USER."PASSWORD"= ''' + md5.MD5Print(md5.MD5String(RzEdit1.Text)) + '''');
Query1.SQL.Add('select * from CW_USER where USERNAME= '+#39+dlyhm +#39' and CW_USER.PASSWORD='#39+md5.MD5Print(md5.MD5String(RzEdit1.Text))+#39);
试试这个。Query1.SQL.Add('select * from CW_USER where USERNAME= ''' + dlyhm + ''' and CW_USER.[PASSWORD]= ''' + md5.MD5Print(md5.MD5String(RzEdit1.Text)) + '''');
Query1.SQL.Add('select * from CW_USER where USERNAME= "' + dlyhm + '" and CW_USER.PASSWORD= "' + md5.MD5Print(md5.MD5String(RzEdit1.Text)) + '"');
注意单引号和双引号的区别