When moving external data into the database, the underlying SQL looks like:
CREATE GLOBAL TEMPORARY TABLE "AYX16020836880b41e08246b59ee8c"
...
My client would like to add a prefix to the table as:
CREATE GLOBAL TEMPORARY TABLE MMMM999_DM_USER."AYX16020836880b41e08246b59ee8c"
where MMMM999_DM_USER is supplied in the configuration.
A service account automatically sets the current session to something like MMMM999 (alter session set curent schema=MMMM999;)