which is considered as Basic SQL :
I have read the help of the site mainly this: https://dba.stackexchange.com/help/on-topic
and it is not clear to me: can they exemplify?
for example I want to ask a question about a query that I really consider to be basic, but I am almost sure that the solution is using joins;
the use of joins at what level is considered for the community of database experts? And if it can be optimized by an advanced function, can it be considered a good question to be published on the site?