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[HIVE-6030] Introduce Explain SubQuery Rewrite command
...There are several transformations happening for SubQuery predicates(HIVE-784). It is hard to tell from the explain plan how the Query is executed. So the goal is to introduce an explain subq...
, 2013-12-13, 22:25
[HIVE-5830] SubQuery: Not In subqueries should check if subquery contains nulls in matching column
...As pointed out by Sivaramakrishnan Narayanan in HIVE-784 for not in when there are nulls in the SubQuery's matching column the Outer Query should return no rows....
, 2013-12-09, 18:50
[HIVE-5614] Subquery support: allow subquery expressions in having clause
, 2013-11-24, 03:20
[HIVE-5874] SubQuery: better error handling when SQ and Outer Query has the same table alias
...The following queryselect * from src where key in (select key from src where src.key > '1')Gives the following message:emanticException [Error 10249]: Line 1:58 Unsupported SubQuery Expre...
, 2013-11-22, 22:06
[HIVE-5557] Push down qualifying Where clause predicates as join conditions
...See details in HIVE-5555...
, 2013-11-13, 17:15
[HIVE-5710] Merging of Join Trees assumes all filters are on the merging table
...The following query fails with a SemanticExceptionselect p1.name, p2.name, p3.namefrom part p1 join p2 on p1.name = p2.namejoin part p3 on p1.name = p3.name and p2.key > 10The Merge Join ...
, 2013-10-31, 18:01
[HIVE-5709] Extend Join merging logic to merge 2 Joins when one Join expression list is a subset of the other.
...As pointed out by Ashutosh Chauhan here: https://reviews.apache.org/r/14953/For the following queryselect p1.name, p2.name, p3.namefrom part p1 join p2 on p1.name = p2.name and p1.key = p2.k...
, 2013-10-31, 17:59
[HIVE-5613] Subquery support: disallow nesting of SubQueries
, 2013-10-30, 22:28
[HIVE-5552] Merging of QBJoinTrees doesn't handle filter pushdowns correctly
...The following query fails:(this based on the schema from auto_join_filters.q)explainSELECT sum(hash(a.key,a.value,b.key,b.value)) FROM myinput1 a LEFT OUTER JOIN myinput1 b on a.value = b.va...
, 2013-10-27, 09:19
[HIVE-4197] Bring windowing support inline with SQL Standard
...The current behavior defers from the Standard in several significant places.Please review attached doc; there are still a few open issues. Once we agree on the behavior, can proceed with fix...
, 2013-09-02, 08:38
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