ST_SetSRID returns a geometry that is the same as input geometry, except updated with the value input for the spatial reference system identifier (SRID).
Syntax
ST_SetSRID(geom, srid)
Arguments
- geom
-
A value of data type
GEOMETRYor an expression that evaluates to aGEOMETRYtype. - srid
-
A value of data type
INTEGERthat represents a SRID.
Return type
GEOMETRY
The SRID value of the returned geometry is set to srid.
If geom or srid is null, then null is returned.
If srid is negative, then an error is returned.
Examples
The following SQL sets the SRID value of a linestring.
SELECT ST_AsEWKT(ST_SetSRID(ST_GeomFromText('LINESTRING(77.29 29.07,77.42 29.26,77.27 29.31,77.29 29.07)'),50));
st_asewkt
-------------
SRID=50;LINESTRING(77.29 29.07,77.42 29.26,77.27 29.31,77.29 29.07)
