Consolidate into one how? Do you mean table 1 is
A 1 2
A 2 2
and table 2 is
B 2 3
B 3 5
and you want
A 1 2
A 2 2
B 2 3
B 3 5
or do you mean table1 is
A 1 2
A 2 3
C 1 4
and table 2 is
A 234
B 345
C 456
and you want
A 1 2 234
A 2 3 234
C 1 4 456
For the first case, you'd use a Union query:
SELECT Field1, Field2, Field3
FROM Table1
UNION
SELECT Field1, Field2, Field3
FROM Table2
For the second case, you'd use a join:
SELECT Table1.Field1, Table1.Field2, Table1.Field3, Table2.Field2
FROM Table1 INNER JOIN Table2
ON Table1.Field1 = Table2.Field2