postgis 查看gis字段定义

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postgis中有时候我们需要查看gis表中定义的字段类型 point、linestring。polygon等。可以通过 geomerty_colums 去查看，example：

 

 

gistest=# select * from geometry_columns where f_table_schema = 'public' and f_t

able_name = 'gis_person' and f_geometry_column = 'geom';

 f_table_catalog | f_table_schema | f_table_name | f_geometry_column | coord_dim

ension | srid |  type

-----------------+----------------+--------------+-------------------+----------

-------+------+---------

 gistest         | public         | gis_person   | geom              |

     2 | 4326 | POLYGON

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