ST_SetSRID
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Name

ST_SetSRID — Set the SRID on a geometry.

Synopsis

geometry ST_SetSRID(geometry geom, integer srid);

설명

Sets the SRID on a geometry to a particular integer value. Useful in constructing bounding boxes for queries.

[Note]

This function does not transform the geometry coordinates in any way - it simply sets the meta data defining the spatial reference system the geometry is assumed to be in. Use ST_Transform if you want to transform the geometry into a new projection.

This method implements the OGC Simple Features Implementation Specification for SQL 1.1.

This method supports Circular Strings and Curves.

예시

Mark a point as WGS 84 longitude/latitude.

SELECT ST_AsEWKT(ST_SetSRID(ST_Point(-123.365556, 48.428611),4326)) AS wgs84long_lat;
SRID=4326;POINT(-123.365556 48.428611)

Mark a point as WGS 84 longitude/latitude and then transform it to Web Mercator.

SELECT ST_AsEWKT(ST_Transform(ST_SetSRID(ST_Point(-123.365556, 48.428611),4326),3785)) AS sphere_merc;
SRID=3785;POINT(-13732990.8753491 6178458.96425423)