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isvalid (MULTYPOLYGON Z with hole)
:memory: #use in-memory database
SELECT IsValid(GeomFromText('MULTIPOLYGONZ(((10 10 100, 15 10 101, 15 15 102, 10 15 103, 10 10 100), (11 11 100, 12 11 101, 12 12 102, 11 12 103, 11 11 100)), ((20 20 110, 21 20 111, 21 21 112, 20 21 113, 20 20 110)))'));
1 # rows (not including the header row)
1 # columns
IsValid(GeomFromText('MULTIPOLYGONZ(((10 10 100, 15 10 101, 15 15 102, 10 15 103, 10 10 100), (11 11 100, 12 11 101, 12 12 102, 11 12 103, 11 11 100)), ((20 20 110, 21 20 111, 21 21 112, 20 21 113, 20 20 110)))'))
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