Postgresql create view with parameters

Otherwise it is created in the current schema. Temporary views exist in a special schema, so a schema name cannot be given when creating a temporary view. The name of the view must be distinct from the name of any other view , table, sequence, index or foreign table in the same schema. I can create a view that wraps my static example query, and that works just fine, however that only works for one pair of string values. I need to be able to use it with a variety of different values.

Thus my question is: is it possible to pass parameters into an otherwise static View and have it become dynamic? How to create a VIEW from function with. To accomplish the same through pgAdmin, do this: Step 1) Login to your pgAdmin account.

Step 2) From the navigation bar on the left- Click Databases. CREATE VIEW defines a view of a query. The view is not physically materialized.

Instea the query is run every time the view is referenced in a query. By default, a view is associated with the default database (currently used database). A view can be accessed as a virtual table in PostgreSQL. In other words, a PostgreSQL view is a logical table that represents data of one or more underlying tables through a SELECT statement. Notice that a view does not store data physically except for.

The PostgreSQL views can be created from a single table, multiple tables, or another view. The get_sum() function accepts two parameters : a, and b and returns a numeric. The data types of the two parameters are NUMERIC. By default, the parameter ’s type of any parameter in PostgreSQL is IN parameter.

You can pass the IN parameters to the function but you cannot get them back as a part of the result. Create or replace function with parameters. I want to create a view that takes parameters and then make a selection on this view like this. Browse other questions tagged sql postgresql postgresql -9.

A materialized view has many of the same properties as a table, but there is no support for temporary materialized views or automatic generation of OIDs. A query can be a simple SELECT statement or a complex SELECT statement with joins. If you want to do this, you have to switch to plpgsql and use EXECUTE. And then be able to call the view passing it a parameter somehow.

Returning sets from a function looks promising but, 7. In this section, we will introduce you to the PostgreSQL views concept and show you how to manage views such as creating , modifying, and removing views from the database. In addition, we will illustrate how to create updatable views and give you a complete example of materialized views , which is a very powerful feature of PostgreSQL. Parameter names are merely decoration when your function is in language SQL. You can use the parameters by name in stored procedures defined as language plpgsql. To do that, you must drop and recreate the function.

When using OUT parameters , that means you cannot change the types of any OUT parameters except by dropping the function. All other function properties are.