[TAJO-1525] Implement INTERSECT [ALL] physical operator

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.11.0
• Assignee: Keuntae Park
• Reporter: Keuntae Park
• Created: 06/Apr/15 01:28
• Updated: 20/Jul/15 12:46
• Resolved: 20/Jul/15 12:17

Description

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

1, 3, 3, 3

while query2 returns

3, 3

query1 INTERSECT ALL query2 should return

3, 3

INTERSECT can be implemented by selecting distinct result of above physical operator.

Issue Links

• blocks: TAJO-1517 Implement INTERSECT