[MDEV-9981] Window function: Assertion(order) failed in Filesort::Filesort when using OVER() Created: 2016-04-25  Updated: 2016-04-25  Resolved: 2016-04-25

Status: Closed
Project: MariaDB Server
Component/s: Optimizer
Affects Version/s: 10.2
Fix Version/s: N/A

Type: Bug Priority: Major
Reporter: Alexander Barkov Assignee: Unassigned
Resolution: Duplicate Votes: 0
Labels: None


 Description   

This query:

DROP TABLE IF EXISTS t1;
 
CREATE TABLE t1 (a INT);
 
INSERT INTO t1 VALUES (10),(20),(30),(40);
 
SELECT AVG(a) OVER () FROM t1;

crashed the server on DBUG_ASSERT:

mysqld: /home/bar/maria-git/server.10.2/sql/filesort.h:70: Filesort::Filesort(ORDER*, ha_rows, bool, SQL_SELECT*): Assertion `order' failed.



 Comments   
Comment by Elena Stepanova [ 2016-04-25 ]

We already have this one: MDEV-9935

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