The following command will delete COMPANY_VIEW view, which we created in the last section. The basic DROP VIEW syntax is as follows − To drop a view, simply use the DROP VIEW statement with the view_name. You can now query COMPANY_VIEW in a similar way as you query an actual table. The child key is the column or set of columns in the child table that are constrained by the foreign key constraint and which hold the REFERENCES clause. This is normally, but not always, the primary key of the parent table. This view will be used to have only a few columns from COMPANY table. The parent key is the column or set of columns in the parent table that the foreign key constraint refers to. ExampleĬonsider COMPANY table with the following records −įollowing is an example to create a view from COMPANY table. If the optional TEMP or TEMPORARY keyword is present, the view will be created in the temp database. You can include multiple tables in your SELECT statement in a similar way as you use them in a normal SQL SELECT query. SQLite views can be created from a single table, multiple tables, or another view.įollowing is the basic CREATE VIEW syntax.ĬREATE VIEW view_name AS SQLite views are created using the CREATE VIEW statement.
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However, you can create a trigger on a view that fires on an attempt to DELETE, INSERT, or UPDATE a view and do what you need in the body of the trigger. SQLite views are read-only and thus you may not be able to execute a DELETE, INSERT or UPDATE statement on a view. Summarize data from various tables, which can be used to generate reports.
Restrict access to the data such that a user can only see limited data instead of a complete table. Structure data in a way that users or classes of users find natural or intuitive. Views which are kind of virtual tables, allow the users to − A view can be created from one or many tables which depends on the written SQLite query to create a view. It is actually a composition of a table in the form of a predefined SQLite query.Ī view can contain all rows of a table or selected rows from one or more tables.
A view is nothing more than a SQLite statement that is stored in the database with an associated name.
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