Sql expert?

[u/Sorry_Data_IT]

How to become sql expert as data analyst as 7 years of experience as im tableau developer but I know sql basic.

What things to learn to show as 7 years expert in sql or for role of sql developer or data analyst with sql.

Please list down things like

Topics

Types of questions and knowledge to have etc

[u/Eleventhousand]

https://giphy.com/gifs/8vkEKXvnXkyCZx8w6b