10 ms·
so this depends on the database engine and while in general it may follow a pattern there are no guarantees. To dig deeper: https://en.wikipedia.org/wiki/Quer
by mirceal 7y ago
so this depends on the database engine and while in general it may follow a pattern there are no guarantees.
To dig deeper:
https://en.wikipedia.org/wiki/Query_plan https://en.wikipedia.org/wiki/Query_plan
https://www.khanacademy.org/computing/computer-programming/sql/relational-queries-in-sql/a/more-efficient-sql-with-query-planning-and-optimization https://www.khanacademy.org/computing/computer-programming/s...
so, SQL is not about how you're going to get the results it's about what results you want.