chuckbert
Well-known member
- Joined
- 8 Dec 2017
- Messages
- 6,851
How about this. Old skool office with a filing cabinet. Old skool boss says to old skool secretary "Miss Jones, I have a filing task for you. Can you please dig out the files for all of the customers who've bought something worth at least 50 quid from us this year, and remove the ones who come from Swindon. If any of the remaining ones are companies we've also bought something from, please bring me files on those purchases too. Thanks dear".
SQL is how you tell a computer to do this unambiguously, when there isn't a human to work out what you actually mean.
SQL is how you tell a computer to do this unambiguously, when there isn't a human to work out what you actually mean.