dating female myspace com single site virginia - Updating oracle views

The basic requirement for each is that you must supply two date values to your view somehow.

Each solution differs in how these values are supplied, and in the restrictions they may impose.

Your view is created to select from the working table to get its parameter values.

updating oracle views-67updating oracle views-25

Note that this command does not result in anything being actually stored in the database at all except for a data dictionary entry that defines this view.

This means that every time you query this view, Oracle has to go out and execute the view and query the database data. View act like small a table but it does not physically take any space.

A View in Oracle and in other database systems is simply the representation of a SQL statement that is stored in memory so that it can easily be re-used.

For example, if we frequently issue the following query This command creates a new view called view_uscustomers.

My answer comes in the form of an Email reply to a friend (why bother to rewrite a prefectly good answer).

Please feel free to abuse my answer if you think it deficient, but you better be posting your own alternatives if you do so.

The most flexible solution and oldest is #1, the newest solution is #3.

They all work in that they all will allow you to pre-create a view that will give you the data you ask for.

I have been asked several times recently, how to create "dynamic" views such that a view can be created using "variables".

Tags: , ,