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PostgreSQL - Create view
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In this article, we would like to show you how to create a view in PostgreSQL.
Quick solution:
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CREATE VIEW "view_name" AS2
SELECT "column1", "column2", ...3
FROM "table_name"4
WHERE condition;To show how the CREATE VIEW statement works, we will use the following table:
Note:
At the end of this article you can find database preparation SQL queries.
In this example, we will create a view that shows all users from Spain.
Query:
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CREATE VIEW "Spain Users" AS2
SELECT "name", "email"3
FROM "users"4
WHERE "country" = 'Spain';To see the view created with the query above simply use:
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SELECT * FROM "Spain Users";Result:
If you try to create view that already exist with CREATE VIEW query you will get an error:
If you try to CREATE VIEW IF NOT EXISTS you will get a warning instead:
create_tables.sql file:
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CREATE TABLE "users" (2
"id" SERIAL PRIMARY KEY,3
"name" VARCHAR(100) NOT NULL,4
"email" VARCHAR(100) NOT NULL,5
"country" VARCHAR(15) NOT NULL6
);insert_data.sql file:
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INSERT INTO "users"2
("name", "email", "country")3
VALUES4
('Tom', 'tom01@email.com', 'Poland'),5
('Chris','chris123@email.com', 'Spain'),6
('Jack','jack32@email.com', 'Spain'),7
('Kim','kim103@email.com', 'Vietnam'),8
('Marco','marco942@email.com', 'Italy'),9
('Kate','kate227@email.com', 'Spain'),10
('Nam','nam393@email.com', 'Vietnam');