SQL

Question

how fast a beginner can master in SQL?

Answer 1

Depends on the beginner and what you mean by master.

I think you can get to intermediate within a week, then practice creating queries with joins.

Answer 2

😂😂

Answer 3

https://code.sololearn.com/c4808MScmUI4/?ref=app
https://code.sololearn.com/cQW647kwCaJ1/?ref=app

Answer 4

What is wrong here?

I am typing this code in MySQL and it is showing an error, what is wrong?
> SELECT * FROM world.country
WHERE IndepYear=1991 AND
Name 'Uzbekistan';

If I type only with IndepYear=1991 it is working fine but if I add Name column it is not working.