ISNULL and NULLIF functions
Where it sits
Learn first
The NULL valueThis skill
ISNULL and NULLIF functions
Leads to
The roles below put it to work directly.
Jobs that need it
- Backend Developer (ASP.NET Core)corelevel 3
- Backend Developer (Go)corelevel 3
- Backend Developer (Java, Spring Boot)corelevel 3
- Backend Developer (Node.js)corelevel 3
- Backend Developer (Python)corelevel 3
- Data Analystcorelevel 3
- Data Engineercorelevel 3
- Full Stack Developer (Java + React)corelevel 3
- Full Stack Developer (Python + React)corelevel 3
- Data Scientistsupportinglevel 2
What level 3 (Working) means
Uses it independently on the job. Level 4 (Strong): handles hard cases, reviews others.
Start learning
ISNULL and NULLIF functions
Functions and operations
about 21 min8 parts
Open the lessonISNULL and NULLIF functions: common questions
What is ISNULL and NULLIF functions?
ISNULL and NULLIF functions is a skill in sql, needed by 10 roles on BootSelf.
Which jobs need ISNULL and NULLIF functions?
Backend Developer (ASP.NET Core), Backend Developer (Go), Backend Developer (Java, Spring Boot), Backend Developer (Node.js), Backend Developer (Python), and 5 more. Most ask for level 3 (Working): uses it independently on the job.
What should I learn before ISNULL and NULLIF functions?
The NULL value.
How long does it take to learn ISNULL and NULLIF functions?
The starting lesson, ISNULL and NULLIF functions, takes about 21 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 ISNULL and NULLIF 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.