You can use this function to import the data of a trajectory object from Object Storage Service (OSS) to the PolarDB database that is used to store the trajectory data.
Syntax
trajectory ST_importFrom(trajectory traj);Parameters
| Parameter | Description |
|---|---|
| traj | The trajectory object. |
Description
This function performs operations that are the reverse of the operations performed
by the ST_ExportTo function. If the data of the specified trajectory object is stored in a PolarDB database
table, this function returns the trajectory data. If the trajectory data is stored
in a file in OSS, this function imports the trajectory data into the PolarDB database
that is used to store the trajectory data. You can use this function and the Update command to change the data storage location for the specified trajectory object from
OSS to the PolarDB database that is used to store the trajectory data.
This function does not change the OSS file that stores the trajectory data.
Examples
update trajs
set traj = ST_ImportFrom(traj);
UPDATE 4