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How to create SQL view in Odoo 15 | Table and View Difference in SQL
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How to Create SQL view in Odoo 15 

Difference between Table and View in SQL

SQL stores data in a database in the form of rows, and columns called the table. The data from a table can be retrieved using SQL queries. A table has related data for which the table was initially created. The table is stored in the database.

A view is a query that contains data from multiple tables joined using SQL queries arranged in table format. The view is not stored in the database; whenever the data is to be viewed, the related query to generate the view is run. This is useful when a set of data is frequently required but requires data from multiple tables to be joined together.

SQL view in Odoo

As mentioned in the previous section, when a set of data from multiple database tables has frequently required. A view can be used as it is much faster than the ORM search methods in handing data from multiple tables as ORM searching can take more time.

Creating SQL view in Odoo 15

Odoo uses SQL queries to get data from the database and uses the views in Odoo to display the data. We will create a view in Odoo mostly it is a tree view as it resembles the table layout in which SQL returns data and since it is easier to interpret multiple data from multiple records.

Create the model as normally you create for Odoo, just that an additional _auto=False is added in the model definition.

Creating SQL view in Odoo 15

_auto = False is given in the model definition to specify that notable needs to be created for this model in the database.

Creating the view for the user needs to create a tree view, an action, and a menu item, as usually done when creating views for the models in Odoo.

SQL view in Odoo

Since the view is set up next step is to write the query to generate the view. The query is written inside the init() function as it is the first one to be executed when the view is called upon by clicking the corresponding menu item.

init() function is used to specify the SQL query because it is the first one to execute when a module is loaded.

How to create SQL view in Odoo 15

Our main SELECT query is written inside the CREATE OR REPLACE VIEW command so that if the view already exists, then we need to replace that view with the view that is going to be created now.

The above-mentioned query will return the selected values from the database and load them to our view.

To open the view for the SQL view, navigate to Odoo and click the menu item for the view.

view in sql

This view is read-only; the user cannot click and view the form view as it is just a view and does not have a form view.

Using this method, users can create views according to their requirements to make views from multiple tables in the database, get better insights into data, and make better decisions.

Since these SQL views are faster than Odoo ORM methods, users can get the results faster when many tables are involved, thus saving time.

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