我有三个表，我想计算每个表中每个度假村的记录数。我得到了一个我无法解释的意外结果。我的表格如下:CREATETABLE`game_items`(`id_items`int(11)NOTNULL,`id_resort`int(11)NOTNULL)ENGINE=InnoDBDEFAULTCHARSET=utf8;INSERTINTO`game_items`(`id_items`,`id_resort`)VALUES(36,81),(38,81),(39,67);CREATETABLE`game_slopes`(`id_slopes`int(11)NOTNULL,`id_resort`in