Видео ютуба по тегу Postgres Alter Table Defaults To 'Null::character Varying' Instead Of Null

Understanding the NULL::character varying Default in PostgreSQL Alter Table Statements

PostgreSQL Coalesce Function - A solution for replacing NULL values with an alternative.

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5mins of Postgres E26: New in Postgres 15 - NULL handling in UNIQUE constraints & Parallel DISTINCT

Learn how to filter null values in 3 mins | PostgreSQL Tutorial

DEFAULT ON NULL gets a boost in 23c/23ai

Функция SQL Null для проверки того, является ли значение столбца пустым или нет

How To Resolve/Fix PostgreSQL Default Value Not Working || PostgreSQL Column Default Value | pgAdmin

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How to alter table(change column datatype with USING keyword) in PostgreSQL

How to Alter Column from Null to Not Null in SQL Server

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