Advent of SQL 2024

★ Advent of SQL 2024 is solved using PostgreSQL.

Star	Day	Level	Topics
⭐	Day 01 - Santa's Gift List Parser	Beginner	json, case, joins
⭐	Day 02 - Santa's jumbled letters	Beginner	union, cte, ascii, array_agg
	Day 03 - The greatest Christmas dinner ever!	Intermediate
⭐	Day 04 - The Great Toy Tag Migration of 2024	Beginner	arrays, set operations
⭐	Day 05 - Santa's production dashboard	Beginner	lag, round, window functions
⭐	Day 06 - Making presents fairer	Beginner	subquery, aggregates
⭐	Day 07 - Santa's Cartesian Elf Skill-Matching Program	Intermediate	cte, window functions
	Day 08 -
⭐	Day 09 - Reindeer Training Records	Intermediate	cte, aggregate functions
⭐	Day 10 - The Christmas party drinking list	Intermediate	pivot, cte
⭐	Day 11 - The Christmas tree famine	Intermediate	Average over, window functions
⭐	Day 12 - The Great Gift Ranking	Intermediate	percentile, window functions
⭐	Day 13 - Santas Christmas card list	Intermediate	window functions, temporary tables, Array agg
⭐	Day 14 - Where is Santa's green suit?	Intermediate	array functions, json functions
⭐	Day 15 - Santa is missing!	Advanced	Geometry
	Day 16 - Santa's Delivery Time Analysis	Advanced	LAG, Geometry, Lead, CTE
⭐	Day 17 - Christmas time zone madness	Intermediate	cte, timezone

Init

--- how to create a password
-- echo -n pass+user | md5sum
--- echo -n asdfg1234advent_of_sql | md5sum
--- asdfg1234 + advent_of_sql i.e. asdfg1234advent_of_sql
--- asdfg1234 is the password
--- advent_of_sql is the user
--- prefix with md5 i.e. md5$hash$


DROP DATABASE IF EXISTS advent_of_sql;

DROP ROLE IF EXISTS advent_of_sql;

CREATE ROLE advent_of_sql WITH
  LOGIN
  NOSUPERUSER
  NOINHERIT
  CREATEDB
  NOCREATEROLE
  NOREPLICATION
  PASSWORD 'md52414c1e35431797cd193111ed64eb67b'
  VALID UNTIL 'infinity';

CREATE DATABASE advent_of_sql WITH
  OWNER = advent_of_sql
  ENCODING = 'UTF8'  
  TABLESPACE = pg_default
  CONNECTION LIMIT = -1;

echo "127.0.0.1:5432:*:advent_of_sql:advent_of_sql" >> ~/.pgpass

# may overwrite you config file
# cp .psqlrc ~/.psqlrc

License

MIT License.

Copyright (c) 2024 Manuel Alejandro Gómez Nicasio az-dev@outlook.com

See LICENSE.md for details.