SQL is not required to learn Tableau and work with Tableau; however, it is essential for securing a job because once you have an offer and begin working on a task, you will need to create the Tableau dashboard by using data.
The next question is how the data will reach you. Sometimes, you'll receive data in Excel, CSV, or note files, while sometimes, clients will grant you an access point to the server that produces data. In this case, you'll have to retrieve data by yourself. Suppose you must retrieve information from any database. In that case, you need to be aware of SQL since SQL is the method used to communicate with databases and receive responses to queries regarding data you can use within Tableau and Power BI. Most Tableau coursesavailable will help you master Tableau entirely from scratch, but don't draw connections between your prior experience (possibly Excel) and the new information.
