Affects Version/s: None
Fix Version/s: 0.11.0
As discussed in TAJO-1517,
INTERSECT ALL needs new physical operator,
which returns the exact number of overlapping rows between results of two query blocks.
For example, when query1 returns
while query2 returns
query1 INTERSECT ALL query2 should return
INTERSECT can be implemented by selecting distinct result of above physical operator.