Circular Relationship-&&>can We Get Duplicate Records

Hi ,

I have two tables test1 and test2 .

Schema of table test1 is

A pk(primary key)

B

C fk (foreign key)

Schema of table test2 is

A

B pk

C fk

Table test1 and test2 have following relationships

1) test1.a pk -> test2.c fk

2) test2.b pk -> test1.c fk

Hence the two tables have circular relationship.

My question is when i query all rows of test1 based on a specific value of test1.a, can we get multiple rows in any case.

I am using following query to retrive the records:

select test1.* from A as A

inner join B on A.a=B.c

inner join A as AA on B.b= AA.c

where AA.a ='100'

Please let me know whether any duplicate row case is possible and if yes, please give any example.



Regards