Hi all I've not worked on Tableau and SQL but for a job position I need to have knowledge of these two - atleast intermediate level. Can you please share some links, sources to prepare for these two - specially from interview clearance perspective. Data analytics and visualisation. Would be grateful. Thanks
Leetcode for SQL
For SQL really know your JOINS & GROUP BYS (self join, left join etc, inner joins and all that). Also suggest window functions as well! (... OVER(), OVER(PARTITION BY .. ORDER BY .. - knowing how they work and being able to explain it. Stuff like RANK(), DENSE_RANK(), ROW_NUMBER() and when/why to use them would be really beneficial. No comment on Tableau.
Thanks a lot
Tableau uses SQL commands to make calculated fields. You gotta use it if you have a student email you can get 1 years access on your personal
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Also, if you can share a few sample interview questions, would be helpful. Thanks