The Ultimate Guide to High Availability with MariaDB

POINTN

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Sintassi

PointN(ls, N)

Spiegazione

Restituisce l'oggetto Point numero N nel valore LineString ls. I punti sono numerati a partire da 1.

Esempi

MariaDB [(none)]> SET @ls = 'LineString(1 1,2 2,3 3)';
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> SELECT AsText(PointN(GeomFromText(@ls),2));
+-------------------------------------+
| AsText(PointN(GeomFromText(@ls),2)) |
+-------------------------------------+
| POINT(2 2)                          |
+-------------------------------------+
1 row in set (0.00 sec)

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