postgresql-dba · bi-analyst
Window functions
2 roles need itUsually level 2: BasicsLesson available
Where it sits
Learn first
GROUP BY statementThis skill
Window functions
Leads to
The roles below put it to work directly.
Jobs that need it
- Backend Developer (Python)supportinglevel 2
- Data Analystsupportinglevel 2
What level 2 (Basics) means
Can use it with guidance. Level 3 (Working): uses it independently on the job.
Window functions: common questions
What is Window functions?
Window functions is a skill in postgresql-dba and bi-analyst, needed by 2 roles on BootSelf.
Which jobs need Window functions?
Backend Developer (Python), Data Analyst. Most ask for level 2 (Basics): can use it with guidance.
What should I learn before Window functions?
GROUP BY statement.
How long does it take to learn Window functions?
The starting lesson, Window functions, takes about 17 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 Window functions?
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.