GitHub - erjan/sql_exercises: i tried to solve as many tasks as possible to make my SQL skills better

Here i upload various solutions from sql practice websites:

sqlzoo.net - ✔️
windowfunctions.com - ✔️
learndb.ru - ✔️
sql-academy.org - ✔️
sqlpad.io - ✔️
pgexercises - ✔️
stratascratch - ✔️
Интерактивный тренажер по SQL степик, stepik https://stepik.org/course/63054/syllabus ✔️

Name		Name	Last commit message	Last commit date
Latest commit History 802 Commits
57_sql_exercises		57_sql_exercises
hackerrank_sql_practice		hackerrank_sql_practice
interview_query		interview_query
learndb		learndb
pgexercises		pgexercises
sql-practicecom		sql-practicecom
sql_academy		sql_academy
sqlzoo		sqlzoo
sqplad_io		sqplad_io
stratascratch		stratascratch
window_functions		window_functions
интерактивный-тренажер-sql		интерактивный-тренажер-sql
Flight Records		Flight Records
LICENSE		LICENSE
README.md		README.md
duplicating_names.sql		duplicating_names.sql
postgresql12.4-interval code snippet		postgresql12.4-interval code snippet
sql murder mystery		sql murder mystery

Provide feedback