PostGIS
Synopsis
+text +DropGeometryColumn(+`varchar `+table_name, varchar
column_name`)`;
+text +DropGeometryColumn(+`varchar `+schema_name, varchar
table_name, varchar column_name`)`;
+text +DropGeometryColumn(+`varchar `+catalog_name, varchar
schema_name, varchar table_name, varchar column_name`)`;
Description
Removes a geometry column from a spatial table. Note that schema_name will need to match the f_table_schema field of the table’s row in the geometry_columns table.
[.inlinemediaobject]
This method implements the
OGC Simple Features
Implementation Specification for SQL 1.1.
This
function supports 3d and will not drop the z-index.
This
method supports Circular Strings and Curves.
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Examples
SELECT DropGeometryColumn ('my_schema','my_spatial_table','geom');
----RESULT output ---
dropgeometrycolumn
------------------------------------------------------
my_schema.my_spatial_table.geom effectively removed.
-- In PostGIS 2.0+ the above is also equivalent to the standard
-- the standard alter table. Both will deregister from geometry_columns
ALTER TABLE my_schema.my_spatial_table DROP column geom;