NUMPOINTS
Sintassi
NumPoints(ls)
Spiegazione
Restituisce il numero di oggetti Point nel valore LineString
ls
.
Esempi
MariaDB [(none)]> SET @ls = 'LineString(1 1,2 2,3 3)'; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> SELECT NumPoints(GeomFromText(@ls)); +------------------------------+ | NumPoints(GeomFromText(@ls)) | +------------------------------+ | 3 | +------------------------------+ 1 row in set (0.00 sec)
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