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TriangularGrid - Polygon geom - text edges_only
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:memory: #use in-memory database
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SELECT TriangularGrid(GeomFromText('POLYGON((3 3, 3 4, 4 4, 4 3, 3 3))', 4326), 1.0, 'alpha');
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1 # rows (not including the header row)
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TriangularGrid(GeomFromText('POLYGON((3 3, 3 4, 4 4, 4 3, 3 3))', 4326), 1.0, 'alpha')