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The Geopoly Interface To The SQLite R*Tree Module
(geopoly.html)
1. Overview
The Geopoly module is an alternative interface to the R-Tree extension that uses
the GeoJSON notation
(RFC-7946) to describe two-dimensional
polygons. Geopoly includes functions for detecting when one polygon is
contained within or overlaps with another, for ...
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The Virtual Table Mechanism Of SQLite
(vtab.html)
2.14. The xFindFunction Method
... The Geopoly module is an example of a virtual table that makes use
of SQLITE_INDEX_CONSTRAINT_FUNCTION to improve performance.
The xFindFunction() method for Geopoly returns
SQLITE_INDEX_CONSTRAINT_FUNCTION for the geopoly_overlap() SQL function
and it returns
SQLITE_INDEX_CONSTRAINT_FUNCTION+1 for the geopoly_within() SQL function ...
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Compile-time Options
(compile.html)
7. Options To Enable Features Normally Turned Off
... SQLITE_ENABLE_GEOPOLY
When this option is defined in the amalgamation, the Geopoly extension
is included in the build.
SQLITE_ENABLE_HIDDEN_COLUMNS
When this option is defined in the amalgamation,
The hidden columns feature is enabled for virtual tables.
SQLITE_ENABLE_ICU
This option causes the ...
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