Sql updating a view I record sexchat with my friend
In this example, we’re going to show you how to update’s column values based on a match to another table.
The general form to use is: contains the update values; we use joins to do the matching.
Though an update statement can modify columns data from many sources, such as literal values or other query results, the basic format is the same.
There are three components to an UPDATE statement: Note: The Sales Person ID generated for your table’s rows may be different than what is show in the exercises, since this primary key is auto generated.
You can only update views that meet certain criteria, or have an associated INSTEAD OF trigger. You are trying to update a view like you would a table.
In this article we’ll explore how to use the UPDATE statement.The ACTOR_FULLNAME column in the view is a concatenation of two base columns and a literal. If you have some meaningful logic you want to implement to handle such an UPDATE, you could use an INSTEAD OF trigger on the view to implement it.Oracle has no way of knowing what you mean by updating that column. Your view contains a virtual column Actor_Full Name, which is a concatenation of two other real columns.There are several common reason an UPDATE statement may fail.Some of the common ones are: In these cases, the UPDATE statement execution stops and the UPDATE generates an error.