select rows from 3 tables
Hi:
I need to select the rows that aren't in a specific table but with a reference to a another table the tables are:
TABLE1
clv PK
names
TABLE2
clvp PK
clv FK (from TABLE1)
TABLE3
clva PK
clvp FK (from TABLE2)
dat
I know 4 sure the dat field on TABLE3 so I need 2 select the "names" fields that aren't related with TABLE2... e.g.
TABLE1
clv names
1 X
2 XX
3 XXX
TABLE2
clvp clv
1 2
2 1
3 2
4 2
5 1
TABLE3
clva clvp dat
1 1 AT-001
2 3 AT-002
3 4 AT-001
4 2 AT-003
5 5 AT-001
I need that the query result shows:
IF dat="AT-001" THEN
names
XXX
READ YA
Deus_m1k3
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