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Literature on quick start in SQL for a beginner in the middle (Joins, subqueries, max, aug, etc.)?
Hi everyone!
At one time, SQL was not particularly needed, it was enough at the very initial level - a select with primitive operators where, ordery by, like, between, distinct)
Now there is a big need to make a tangible breakthrough in the SQL, at least they said to study joins, subqueries, max functions , rownum, and so on...
I didn’t really teach skl before, I made a couple of selects and remembered .. and how the tasks reached the level of joins with subqueries, with the calculation of the average, I swam ..
I will take advice on a quick start and the right direction, Gruber Martin advised me - Understanding SQL is not the norm? What is better than a video or a book in printed form?
How much do I want and will I be able to study it?
Thank you all for participating)
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