ST_SetAkSecret-PolarDB(PolarDB)-阿里云帮助中心

Note

This function is not supported in later versions. Use Cold data tiered storage instead.

Resets the AccessKey secret used to access the Object Storage Service (OSS) bucket that stores a trajectory object's data.

When reading trajectory data stored in an OSS bucket, the function requires a valid AccessKey pair — an AccessKey ID (similar to a username) and an AccessKey secret (similar to a password).

Syntax

trajectory ST_SetAkSecret(trajectory traj, text aksecret, bool checkvalid default true);

Parameters

Parameter	Description
`traj`	The trajectory object.
`aksecret`	The AccessKey secret used to access the OSS bucket.
`checkvalid`	Specifies whether to validate the AccessKey secret. Default value: `true`. If set to `true`, the system tests whether the AccessKey secret can access the OSS bucket. If the test fails, an error is returned.

Examples

Reset the AccessKey secret for all trajectory objects in the trajs table:

SELECT ST_SetAkSecret(traj, '<OSS_PWD>') FROM trajs;

Expected output:

                                                                                                                                                                                                                                                st_setaksecret
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 {"trajectory":{"version":1,"type":"STPOINT","leafcount":6,"start_time":"Sat Jan 01 03:15:42 2000","end_time":"Sat Jan 01 05:16:43 2000","spatial":"LINESTRING(2 2 0,33.042158099636 36.832684322819 0,47.244002354518 47.230026333034 0,64.978971942887 60.618813472986 0,77.621717839502 78.012496630661 0,80 78 0)","timeline":["Sat Jan 01 03:15:42 2000","Sat Jan 01 03:39:54 2000","Sat Jan 01 04:04:06 2000","Sat Jan 01 04:28:18 2000","Sat Jan 01 04:52:31 2000","Sat Jan 01 05:16:43 2000"]}}
 {"trajectory":{"version":1,"type":"STPOINT","leafcount":6,"start_time":"Sat Jan 01 03:15:42 2000","end_time":"Sat Jan 01 05:16:43 2000","spatial":"LINESTRING(2 2 0,33.042158099636 36.832684322819 0,47.244002354518 47.230026333034 0,64.978971942887 60.618813472986 0,77.621717839502 78.012496630661 0,80 78 0)","timeline":["Sat Jan 01 03:15:42 2000","Sat Jan 01 03:39:54 2000","Sat Jan 01 04:04:06 2000","Sat Jan 01 04:28:18 2000","Sat Jan 01 04:52:31 2000","Sat Jan 01 05:16:43 2000"]}}
 {"trajectory":{"version":1,"type":"STPOINT","leafcount":6,"start_time":"Sat Jan 01 03:15:42 2000","end_time":"Sat Jan 01 05:16:43 2000","spatial":"LINESTRING(2 2,33.042158099636 36.832684322819,47.244002354518 47.230026333034,64.978971942887 60.618813472986,77.621717839502 78.012496630661,80 78)","timeline":["Sat Jan 01 03:15:42 2000","Sat Jan 01 03:39:54 2000","Sat Jan 01 04:04:06 2000","Sat Jan 01 04:28:18 2000","Sat Jan 01 04:52:31 2000","Sat Jan 01 05:16:43 2000"]}}
 TRAJECTORY EMPTY
(4 rows)