ST_equals-PolarDB(PolarDB)-阿里云帮助中心

Returns true if a trajectory object and the specified geometry object are spatially equal within the specified time range.

Syntax

boolean ST_equals(trajectory traj, tsrange range, geometry g);
boolean ST_equals(trajectory traj, timestamp t1, timestamp t2, geometry g);

Use the tsrange overload to pass the time range as a single PostgreSQL range value. Use the t1/t2 overload to pass start and end timestamps separately.

Parameters

Parameter	Type	Description
`traj`	trajectory	The trajectory object.
`range`	tsrange	The time range.
`t1`	timestamp	The start time.
`t2`	timestamp	The end time.
`g`	geometry	The geometry object to compare against.

Example

Check whether a trajectory between 13:00 and 14:00 on January 1, 2010 is spatially equal to a line:

SELECT ST_equals(traj, '2010-1-1 13:00:00', '2010-1-1 14:00:00', 'LINESTRING(0 0, 5 5, 9 9)'::geometry)
FROM traj_table;