how to create sql code not duplicate Record

[cehrfaee]

Hi!
Please help me!
How to create sql code ..
Records from two tables do not match
Thank You!
Table 1
Per1 Per2 Per3
A1 B1 C1
A1 B1 C2
A1 B1 C3
A1 B1 C4
A2 B1 C1
A2 B1 C2
A2 B1 C3
A2 B2 C4
A2 B2 C1
A2 B2 C2
A2 B2 C3

Table 2
Per1 Per2 Per3
A1 B1 C3
A2 B1 C2
A2 B2 C1

Results
Per1 Per2 Per3
A1 B1 C1
A1 B1 C2
A1 B1 C4
A2 B1 C1
A2 B1 C3
A2 B2 C4
A2 B2 C2
A2 B2 C3

[Mihail]

This work on your test data but do more tests to be sure.

SELECT DISTINCT Table1.Per1, Table1.Per2, Table1.Per3
FROM Table1 LEFT JOIN Table2 ON (Table1.Per3 = Table2.Per3) AND (Table1.Per2 = Table2.Per2) AND (Table1.Per1 = Table2.Per1)
WHERE (((([Table1]![Per1]=[Table2]![Per1]) And ([Table1]![Per2]=[Table2]![Per2]) And ([Table1]![Per3]=[Table2]![Per3])) Is Null))
ORDER BY Table1.Per1, Table1.Per2, Table1.Per3;