Query results with no reverse
- by gruber
Hi,
Ive got table:
UserA,
UserB,
numberOfConnections
I would like to write query which returns me only rows that has no reverse I mean or example :
for data :
1 2 10
1 3 10
1 5 10
1 6 10
2 6 10
2 5 10
5 1 10
5 2 10
3 1 10
it should return
1 2 10
1 3 10
1 5 10
1 6 10
2 6 10
2 5 10
rows:
5 1 10
5 2 10
3 1 10
arent valid because there are already corresponding
1 5 10
2 5 10
3 1 10
thanks for help
bye
