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SELECT ST_WITHIN( LINESTRINGFROMTEXT(' LINESTRING( 5 9 , 3 4 , 4 1 , 4
4 , 4 9 ) ') , ST_SYMDIFFERENCE( ST_UNION( ST_ENVELOPE( POLYGONFROMTEXT('
POLYGON( ( 3 2 , 0 6 , 2 3 , 8 0 , 4 6 , 7 2 , 3 2 ) ) ') ) ,
MULTIPOLYGONFROMTEXT('
MULTIPOLYGON( ( ( 0 0 , 7 1 , 6 8 , 0 0 ) ) , ( ( 9 9 , 4 0 , 4 7 , 9 9) ) )
') ) , ST_SYMDIFFERENCE( POLYGONFROMTEXT(' POLYGON( ( 9 9 , 6 5 , 2 3 , 9 9
) ) ') , MULTIPOLYGONFROMTEXT(' MULTIPOLYGON( ( ( 2 2 , 5 2 , 5 2 , 2 6 , 2
2 ) ) , ( ( 7 7 , 3 7 , 2 9 , 7 1 , 7 7 ) ) ) ') ) ) );
ERROR HY000: Geometry overlay calculation error: geometry data is invalid in function st_union.
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