[MDEV-4236] EXIST2IN in any place of the query Created: 2013-03-03  Updated: 2015-11-17

Status: Open
Project: MariaDB Server
Component/s: Data Manipulation - Subquery, Optimizer
Fix Version/s: None

Type: Task Priority: Major
Reporter: Oleksandr Byelkin Assignee: Oleksandr Byelkin
Resolution: Unresolved Votes: 0
Labels: optimizer

Issue Links:
Relates
relates to MDEV-4246 Assertion `!exists_transformed || nul... Open
Sub-Tasks:
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MDEV-4246 Assertion `!exists_transformed || nul... Technical task Open Oleksandr Byelkin  

 Description   

Remove IN NULL processing in converted EXISTS for IN2EXISTS and Materialization strategies.

 Comments   
Comment by Oleksandr Byelkin [ 2013-03-03 ]

IN2EXISTS:
left part NULL processed in Item_in_optimizer::val_int()
NULL caused by presence of NULL in answer processed in Item_in_subselect::val_*

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