mysql>
mysql>
mysql> SET @mp = GEOMFROMTEXT('MULTIPOINT(1 1, 10 99, 0 5)');
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql> SELECT ASTEXT(ENVELOPE(@mp)), ASTEXT(ENVELOPE(@mp));
+------------------------------------+------------------------------------+
| ASTEXT(ENVELOPE(@mp)) | ASTEXT(ENVELOPE(@mp)) |
+------------------------------------+------------------------------------+
| POLYGON((0 1,10 1,10 99,0 99,0 1)) | POLYGON((0 1,10 1,10 99,0 99,0 1)) |
+------------------------------------+------------------------------------+
1 row in set (0.00 sec)
mysql>
mysql>