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MySQL provides a standard way of creating spatial columns for
geometry types, for example, with CREATE TABLE
or ALTER TABLE
.
Currently, spatial columns are supported only for MyISAM
tables.
CREATE TABLE
statement to create a table with a spatial column:
mysql> CREATE TABLE geom (g GEOMETRY); Query OK, 0 rows affected (0.02 sec) |
ALTER TABLE
statement to add or drop a spatial column to or
from an existing table:
mysql> ALTER TABLE geom ADD pt POINT; Query OK, 0 rows affected (0.00 sec) Records: 0 Duplicates: 0 Warnings: 0 mysql> ALTER TABLE geom DROP pt; Query OK, 0 rows affected (0.00 sec) Records: 0 Duplicates: 0 Warnings: 0 |