我有一个访问查询，它汇集了来自多个链接表的数据。我注意到，当查询运行时，它会删除指向特定表“SPAFTable”的链接，并且似乎将链接表转换为本地表。
我不确定是什么原因造成的，因为这只是一个 SELECT 查询，不涉及在查询中明确定义的表创建。这是查询本身：
SELECT SPAFTable.Enrolled_Class, SPAFTable.Last_Name, SPAFTable.BarCode1, SPAFTable.BarCode2, SPAFTable.BarCode3, SPAFTable.BarCode4, SPAFTable.Guard1_Cell, SPAFTable.Guard2_Cell, SPAFTable.Guard1_Rel, SPAFTable.Guard2_Rel, SPAFTable.Auth1_Cell, SPAFTable.Auth2_Cell, SPAFTable.Auth3_Cell, SPAFTable.Auth4_Cell, SPAFTable.Auth1_Rel, SPAFTable.Auth2_Rel, SPAFTable.Auth3_Rel, SPAFTable.Auth4_Rel, SPAFTable.First_Name, SPAFTable.Student_Nbr, SPAFTable.Street_Address, SPAFTable.Apt_Nbr, SPAFTable.City, SPAFTable.State, SPAFTable.Zip, SPAFTable.Guard1_Restr, SPAFTable.Guard2_Restr, SPAFTable.Auth1_Restr, SPAFTable.Auth2_Restr, SPAFTable.Auth3_Restr, SPAFTable.Auth4_Restr, SPAFTable.StudentName, SPAFTable.HomePhone, SPAFTable.RInd, Student_T.[Student Photo], Family_T.DL_Pic_Location AS Guard1_DLPic, Family_T_1.DL_Pic_Location AS Guard2_DLPic, Family_T_2.Drivers_License_attach AS Auth1_DLPic, Family_T_3.Drivers_License_attach AS Auth2_DLPic, Family_T_4.Drivers_License_attach AS Auth3_DLPic, Family_T_5.Drivers_License_attach AS Auth4_DLPic, Student_T.Student_Pic_Location
FROM (((((Family_T RIGHT JOIN (SPAFTable LEFT JOIN Student_T ON SPAFTable.Student_Nbr = Student_T.Student_Nbr) ON Family_T.Family_Member_Nbr = SPAFTable.Guard1) LEFT JOIN Family_T AS Family_T_1 ON SPAFTable.Guard2 = Family_T_1.Family_Member_Nbr) LEFT JOIN Family_T AS Family_T_2 ON SPAFTable.Auth1 = Family_T_2.Family_Member_Nbr) LEFT JOIN Family_T AS Family_T_3 ON SPAFTable.Auth2 = Family_T_3.Family_Member_Nbr) LEFT JOIN Family_T AS Family_T_4 ON SPAFTable.Auth3 = Family_T_4.Family_Member_Nbr) LEFT JOIN Family_T AS Family_T_5 ON SPAFTable.Auth4 = Family_T_5.Family_Member_Nbr;
有人对为什么会发生这种情况有任何想法吗？提前致谢。