Create sql examples for each reserved keyword and each operation

sql code examples needed
no explanations only code
create new or modify existing from web cheat sheet

instruct how to install free DB on windows to run your queries
postgres
create simple educations DB with 4 tables
each table takes one page to print
doc file for windows extension .doc

2 pages per each type of query
one page query examples from easy to complicated 3-4 example
second page answers for each example

for example
groupby
inner join
outer join
https://www.sqlshack.com/sql-cross-join-with-examples/
https://www.sqlshack.com/sql-while-loop-with-simple-examples/

only main , no need for example for
Geospatial Functions
HyperLogLog Functions
KHyperLogLog Functions


low ink use document printing

just idea
https://www.educba.com/data-science/data-science-tutorials/sql-tutorial/

or
https://prestodb.io/docs/current/language/reserved.html
and
https://prestodb.io/docs/current/functions.html

or
https://sqlzoo.net/wiki/Window_functions