Question

I am using PostgreSQL 9.1 with PostGIS 2.0.1.

The type of column location is point. type of latitude and longitude double precision.

Why is this update statement

update list_of_location SET location = ST_SetSRID(ST_MakePoint(longitude,latitude), 4326);

returning

LINE 1: update list_of_location SET location = ST_SetSRID(ST_MakePoint(longit...
                                               ^
HINT:  You will need to rewrite or cast the expression.

Answer 1

To use PostGIS 2.0+, location should be of type geometry(Point,4326), and not point.