GLENGTH
Sintassi
GLength(ls)
Spiegazione
Restituisce la lunghezza del valore LineString ls come numero a doppia precisione.
Esempi
MariaDB [(none)]> SET @ls = 'LineString(1 1,2 2,3 3)'; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> SELECT GLength(GeomFromText(@ls)); +----------------------------+ | GLength(GeomFromText(@ls)) | +----------------------------+ | 2.82842712474619 | +----------------------------+ 1 row in set (0.00 sec)
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