[MDEV-3684] LP:801475 - ST_UNION() does not perform duplicate weedout in maria-5.3-gis Created: 2011-06-24  Updated: 2012-10-04  Resolved: 2012-10-04

Status: Closed
Project: MariaDB Server
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Bug
Reporter: Philip Stoev (Inactive) Assignee: Alexey Botchkov
Resolution: Fixed Votes: 0
Labels: Launchpad

Attachments: XML File LPexportBug801475.xml    

 Description   

ST_UNION does not perform duplicate weedout. The union of 2 identical POINTs is returned as a MULTIPOINT containing 2 identical POINTS. Postgis returns a single POINT.

SELECT AsText( ST_UNION( GeometryFromText(' POINT( 4 4 ) ') , GeometryFromText(' POINT( 4 4 ) ') ) );

returns:

MULTIPOINT(4 4,4 4)

 Comments   
Comment by Rasmus Johansson (Inactive) [ 2011-12-13 ]

Launchpad bug id: 801475

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