App user

Question

Im trying to use app_user within a process but so far with no succsess, below is the code, any help appreciated.
SELECT incident_tmp.report_id,
incident_tmp.report_type,
incident_tmp.report_no,
actions_tmp.report_no,
actions_tmp.due_date,
actions_tmp.progress,
actions_tmp.last_update
FROM incident_tmp, actions_tmp
WHERE incident_tmp.report_id = actions_tmp.report_id
and actions_tmp.progress < 100
AND UPPER(SUBSTR(actions_tmp.actionee,10)) = v('APP_USER')
Marco

Answer 1

it would be best-practice to only use bind_variables in you're SQL (because of possible sql-injection ed.) in this case it is not that criticl, ince you are using an apex derived item APP_USER. But in other cases, let say P1_WHERE, which lets the user give the input for the item P1_WHERE. it is better not to just use the substitition &P1_WHERE. notation because of possible injections.
In this case i would use:
AND UPPER(SUBSTR(actions_tmp.actionee,10)) = :APP_USER
instead of v('APP_USER'). This is for performance reasons, since using the v-function, will make the sql-engine have to switch to the pl/sql engine, and because of no caching in de v-function, this has to be done for every row!
therefor USE BIND_VARIABLES!