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postgresql-dba

Set operations

1 role need itUsually level 2: BasicsLesson available

Where it sits

Learn first

SELECT FROM statement

This skill

Set operations

Leads to

The roles below put it to work directly.

Jobs that need it

What level 2 (Basics) means

Can use it with guidance. Level 3 (Working): uses it independently on the job.

Start learning

Set operations

Functions and operations

about 7 min6 parts

Open the lesson

Find out where you stand

A free check, then a route that starts at your level.

Check my readiness

Learned alongside it

ACIDACID ModelAggregate functionsAnsibleAuthenticationAuthentication and AuthorizationBasic data typesBasics SQL

Set operations: common questions

What is Set operations?

Set operations is a skill in postgresql-dba, needed by 1 role on BootSelf.

Which jobs need Set operations?

Backend Developer (Python). Most ask for level 2 (Basics): can use it with guidance.

What should I learn before Set operations?

SELECT FROM statement.

How long does it take to learn Set operations?

The starting lesson, Set operations, takes about 7 minutes. Reaching the level a job asks for takes practice on top: BootSelf measures where you are and plans the rest.

How do I practise Set operations?

Check your readiness for free, then BootSelf builds a route and short daily learning loops: a little theory, checks on what you get wrong, then a small program.