postgres

Commit Graph

Author	SHA1	Message	Date
Tom Lane	818e593736	Suppress uninitialized-variable warnings. My compiler doesn't like the lack of initialization of "flag", and I think it's right: if there were zero keys we'd have an undefined result. The AND of zero items is TRUE, so initialize to TRUE.	10 years ago
Teodor Sigaev	acdf2a8b37	Introduce SP-GiST operator class over box. Patch implements quad-tree over boxes, naive approach of 2D quad tree will not work for any non-point objects because splitting space on node is not efficient. The idea of pathc is treating 2D boxes as 4D points, so, object will not overlap (in 4D space). The performance tests reveal that this technique especially beneficial with too much overlapping objects, so called "spaghetti data". Author: Alexander Lebedev with editorization by Emre Hasegeli and me	10 years ago

Author

SHA1

Message

Date

Tom Lane

818e593736

Suppress uninitialized-variable warnings.

My compiler doesn't like the lack of initialization of "flag", and
I think it's right: if there were zero keys we'd have an undefined
result.  The AND of zero items is TRUE, so initialize to TRUE.

10 years ago

Teodor Sigaev

acdf2a8b37

Introduce SP-GiST operator class over box.

Patch implements quad-tree over boxes, naive approach of 2D quad tree will not
work for any non-point objects because splitting space on node is not
efficient. The idea of pathc is treating 2D boxes as 4D points, so,
object will not overlap (in 4D space).

The performance tests reveal that this technique especially beneficial
with too much overlapping objects, so called "spaghetti data".

Author: Alexander Lebedev with editorization by Emre Hasegeli and me

10 years ago

2 Commits (c8e81afc60093b199a128ccdfbb692ced8e0c9cd)