Update With Variable In PostgreSQL

Faruk Erdem

9 months ago

In this article, we will discuss how to perform the update process with the help of variables in PostgreSQL.

I want to update the name in the parents table as ‘selcan’ and the e-mail address as ‘selcengül@gmail.com’.

DO $$
DECLARE
isim VARCHAR(30) := 'selcan';
mail VARCHAR(150) := 'selcengül@gmail.com';
BEGIN
UPDATE veliler        SET  email = mail WHERE adi= isim ;
END $$;

DO $$

DECLARE

isim VARCHAR(30) := 'selcan';

mail VARCHAR(150) := 'selcengül@gmail.com';

BEGIN

UPDATE veliler SET email = mail WHERE adi= isim ;

END $$;

As seen above, by setting the ‘adi’ column equal to the ‘isim’ variable, we write the part whose name is selcan here.

In the Set section, I want to update the email address in the parents table with the data defined in the mail variable.