ApplyFilter |
SELECT * FROM Reg_KS WHERE (Reg_KS.[KS_ID]) In (SELECT [KS_ID] FROM [Reg_KS] GROUP BY [KS_ID],[MAC] HAVING Count(*)>1 And [MAC] = [Reg_KS].[MAC]) ORDER BY Reg_KS.[KS_ID], Reg_KS.[MAC];
https://www.sql.ru/forum/1317689/applyfilter-dlya-dublikatov-v-tablice