![]() ![]() This example will delete a VIEW named current_inventory. If you do not specify this option and VIEW does not exist, Drop VIEW will return the error.Īn example of how to use the Drop VIEW operator in PostgreSQL view_name – The name of the view you want to delete.In this approach, PostgreSQL will first see the name of the new data type as the return type of the input function. The way to create a new base type was to create its input function first. It is better to delete VIEW and use the CREATE VIEW operator! Drop VIEWĪfter creating VIEW in PostgreSQL, you can delete it using the Drop VIEW operator. Before PostgreSQL version 8.2, the shell-type creation syntax CREATE TYPE name did not exist. In this case, do not use the CREATE OR REPLACE VIEW statement. However, it will be an error if you add new columns to the existing columns (i.e.: start or middle of an existing list). ![]() The CREATE OR REPLACE VIEW statement will work if you add columns to the view at the end of the list. WARNING: THIS EXAMPLE WOULD UPDATE THE DEFINITION OF VIEW WITH THE NAME CURRENT_INVENTORY WITHOUT REMOVING IT This CREATE OR REPLACE VIEW example would update the VIEW definition with the name current_inventory without removing it. ON products.category_id = categories.category_id SELECT product_name, quantity, category_name view_name – The name of the view you want to update.Īn example of how the CREATE OR REPLACE VIEW operator can be used in PostgreSQLĬREATE or REPLACE VIEW current_inventory AS.The syntax for CREATE OR REPLACE VIEW in PostgreSQL You can change the VIEW definition in PostgreSQL without removing it using the CREATE OR REPLACE VIEW statement. You can now query the PostgreSQL VIEW as follows: This example CREATE VIEW will create a virtual table based on the resulting SELECT operator set. The conditions that must be met to enable entries in VIEW.Īn example of how to use the CREATE VIEW statement to create a view in PostgreSQL view_name – The VIEW name you want to create in PostgreSQL.If you do not specify this operator and VIEW already exists, the CREATE VIEW operator will return the error. Create VIEW Syntax of CREATE VIEW operator in PostgreSQL In PostgreSQL, VIEW is not a physical table, but rather a virtual table created by a joins query that connects one or more tables. ![]()
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