|
|
|
|
|
by tejtm
1641 days ago
|
|
Following the granularity gradient FROM .. JOIN .. WHERE .. SELECT tables -> columns -> rows -> filter I think they knew that but decided they wanted DBAs to think about
what they wanted to end up with before they began writing code,
so they moved the last step to the first step.
I can get behind that from a pedagogical perspective. However today, relational databases are far too ubiquitous to always get the level of serious thought and considerations they were once afforded,
and are regularly being used by (perish the thought) non-DBAs. At this point it is muscle memory to start with: select count(*)
from ..
join .. on ..
then comment out the `--count(*)` and build up the output
after the body works because
I may not know what is available to select before isolating it. |
|