SQL Interview Question - Difference between Count(*), Count(1), Count(colname) | Which is fastest

This tutorial discusses the difference between Count(*), count(1) and count(colname) in SQL and explains which of them is the fastest. Want more guided learning, practice packs, and deep-dive SQL content? You’ll find all of that in our premium courses here - https://knowstar.gumroad.com/ Recommended SQL Courses worth exploring - 🔗 DataCamp SQL Fundamentals - https://datacamp.pxf.io/KByNDA 🔗 DataCamp Associate Data Analyst in SQL - https://datacamp.pxf.io/qWOj7j 🔗 DataCamp SQL Associate Certification 👉 https://datacamp.pxf.io/3kZW5d 🔗 Google Data Analytics Certificate (Coursera) - https://imp.i384100.net/WOgPqX Please do not forget to like, subscribe and share. For enrolling and enquiries, please contact us at Website - https://knowstar.gumroad.com/ Facebook -   / knowstartrainings   Linkedin - https://www.linkedin.com/company/know... Email - learn@knowstar.org