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ST_SplitLeft - Collection-Line (not split)
:memory: #use in-memory database
SELECT AsText(ST_ForceLHR(ST_SplitLeft(GeomFromText('GEOMETRYCOLLECTION(LINESTRING(0 11, 10 11), POLYGON((0 1, 10 1, 10 10, 0 10, 0 1), (5 5, 9 5, 9 9, 5 9, 5 5)))'), GeomFromText('LINESTRING(-1 0, -1 20)'))));
1 # rows (not including the header row)
1 # columns
AsText(ST_ForceLHR(ST_SplitLeft(GeomFromText('GEOMETRYCOLLECTION(LINESTRING(0 11, 10 11), POLYGON((0 1, 10 1, 10 10, 0 10, 0 1), (5 5, 9 5, 9 9, 5 9, 5 5)))'), GeomFromText('LINESTRING(-1 0, -1 20)'))))
GEOMETRYCOLLECTION(LINESTRING(0 11, 10 11), POLYGON((0 1, 0 10, 10 10, 10 1, 0 1), (5 5, 9 5, 9 9, 5 9, 5 5)))
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