This section contains reference documentation for the ST_Contains function.
Returns true if and only if no points of the second geometry/geography lie in the exterior of the first geometry/geography, and at least one point of the interior of the first geometry lies in the interior of the second geometry.
ST_Contains(geometry/geography, geometry/geography)
ST_Contains on Geography only give close approximation: we use geometry computation on geography objects, which can give close approximation on small areas, but not work well on for areas cross the 180th meridian.
These examples are based on the Streaming Quick Start.
New York
POINT (-73.99 40.75)
1
New York
POINT (-73.99 40.75)
1
Staten Island
POINT (-74.15 40.61)
1
New York
POINT (-73.99 40.75)
1
New York
POINT (-73.99 40.75)
1
8