ST_POINTN
Syntax
ST_PointN(ls,N) PointN(ls,N)
Description
Returns the N-th Point in the LineString value ls.
Points are numbered beginning with 1.
ST_PointN() and PointN() are synonyms.
Examples
SET @ls = 'LineString(1 1,2 2,3 3)'; SELECT AsText(PointN(GeomFromText(@ls),2)); +-------------------------------------+ | AsText(PointN(GeomFromText(@ls),2)) | +-------------------------------------+ | POINT(2 2) | +-------------------------------------+
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