[TAJO-756] (Umbrella) Window function support - ASF JIRA

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Details

Type: New Feature
Status: Open
Priority: Major
Resolution: Unresolved
Affects Version/s: None
Fix Version/s: window function
Component/s: distributed query plan, Physical Operator, Planner/Optimizer, SQL Parser
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Description

A window function performs a calculation across a set of table rows associated with some window frame. Window function is the key feature for analytic applications. We need to support window function.

Window function support involves various issues, new grammar rules, logical planning, distributed planning, and physical planning. This is an umbrella issue. I'll create various subtasks.

Attachments

Sub-Tasks

1.	Add parser rule and algebraic expression for window function	Resolved	Hyunsik Choi
2.	Implement logical plan part and physical executor for window function.	Resolved	Hyunsik Choi
3.	Implement LAG and LEAD window functions	Resolved	Keuntae Park
4.	Add FIRST_VALUE and LAST_VALUE window functions	Resolved	Keuntae Park
5.	Add STDDEV_SAMP and STDDEV_POP window functions	Resolved	Keuntae Park
6.	Add NTH_VALUE window function	Patch Available	Seungun Choe
7.	Add VAR_SAMP and VAR_POP window functions	Resolved	Dongjoon Hyun
8.	Merge the current window_function branch to master	Resolved	Hyunsik Choi
9.	Repeated using of the same order by key in multiple window clauses should be supported	Resolved	Keuntae Park
10.	Window frame support	Open	Keuntae Park
11.	Implement ntile window function	Patch Available	Seungun Choe

Activity

People

Assignee:: Unassigned

Reporter:: Hyunsik Choi

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Watchers:: 0 Start watching this issue

Dates

Created:: 11/Apr/14 19:05

Updated:: 16/Apr/14 08:28