How to hide lines?

Hello people,

I just know that the way to hide lines except dbms_rls package? I mean, it has been said that I can hide lines to create views but lets say I had 200 students and each student can see that their lines in the students table, in this scenerio I must create 200 views, isn't it? I would just learn how to hide lines with the help of views? You have any ideas?

Note: I know dbms_rls package, but this solution that I'm tryin to find the onather solution.

Thank you very much.

Hello

Polat says:
... Then, u said that I can use the USER-defined function when I creat discover however when people cite this point of view this view always run in the schema owner of views so the USER always returns the same value, isn't?

No, the USER-defined function always reflects the schema of the caller. Try it. In a single schema (let's say it's POLAT), create a view like this

CREATE OR REPLACE  view_x
AS
SELECT  USER    AS user_name
FROM    dual;

GRANT  SELECT  ON view_x  TO PUBLIC;

You're still connected under POLAT, run

SELECT  *
FROM    view_x;

Now connect with a different user and try

SELECT  *
FROM    polat.view_x;

What do you see?

I'm just trying to understand your example. I mean lets say we have different Oracle user accounts. When users call this view in which it will perform? Session owner, isn't?

What do you mean by "session of the owner? The owner should not be connected at all. Each user who is logged in will have a separate and independent session. Results of "SELECT * FROM view_x;" might be completely different at each meeting.

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