select ST_GeomFromText('POLYGON((0 0,2 0,2 2,0 2,0 1))')

BŁĄD:  geometry contains non-closed rings
HINT:  "POLYGON((0 0,2 0,2 2,0 2,0 1))" <-- parse error at position 30 within geometry

select *
from foo
where ST_Equals(ST_LineInterpolatePoint(way,0),ST_LineInterpolatePoint(way,1))=false