Hello

2 simply tables

table1
Clientid col1
1 A
2 A
3 B

table2
Clientid col1 col2
1 A A
1 A B
1 B A
2 A B
2 B A
3 A A
3 B A

i'm searching Clientid's which have in table1,col1 an A and in table2
with same clientid DONT have a row A A

result is Clientid 2

can anyone help me

thanx
inc.