is there a function that returns the number of points of a geometry? LINESTRING(9.6567389 47.8442843,9.6572511 47.8443736,9.6570058 47.8449885,9.6565007 47.8449207,9.6567378 47.8442853) => 5 LINESTRING(8.9289313 48.6910326,8.9289313 48.6910326) => 2 ...
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