The difference between WHERE and HAVING filters in Transact-SQL queries is that WHERE clause is a filter of all the data, while HAVING filters the GROUP BY data. I’ve prepared a simple example.
John Lennon said:
Life is what happens to you while you’re busy making other plans
on the Beautiful Boy song.
I wrote a schema of my plans and what’s really happening. Now, the scheme, then I’m gonna explain it.
Explanation: Black – plans, Red – reality (favorable), Blue – reality (unfavorable).
If you think smart, you’ll be able to walk [...]
The interesting thing about me is… Several days ago I received a letter from Microsoft. They presented me a voucher for an exam. Now I’m preparing myself for this exam. It’s a hard one, but I learn a lot :-)
Yesterday my sister told me that Slash is preparing something interesting… From song to song I [...]