ST_SetAkid_云数据库 RDS(RDS)-阿里云帮助中心

设置外部存储轨迹的AccessKeyId。

语法

trajectory ST_SetAkId(trajectory traj, text akid, bool checkvalid default true);

参数

参数名称	描述
traj	轨迹对象。
akid	访问OSS的AccessKeyId。
checkvalid	是否需要验证正确性，默认为true。如果为true，则尝试用新设定的AccessKey访问OSS，如果访问失败则报错。

描述

重新设置访问外部存储时的AccessKeyId。

从OSS外部存储读取轨迹时，需要提供AccessKey，每个AccessKey分为AccessKeyId和AccessKeySecret（可以理解为用户名和密码）。

示例

select ST_SetAKId(traj, '<OSS_USER>') from trajs;
                                                                                                                                                                                                                                               st_setakid                                                                                                                                                                                                                                               
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 {"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)