SQL

Here are some useful SQL data analysis tasks from different platforms like LeetCode, StrataScratch, ITResume, Stepik and others.

Name		Name	Last commit message	Last commit date
Latest commit History 30 Commits
CancellationRate_TaxiTrips.ipynb		CancellationRate_TaxiTrips.ipynb
ChurnRate_SQL.txt		ChurnRate_SQL.txt
Clients_Average_Session_Time.txt		Clients_Average_Session_Time.txt
Delete_Duplicate_Emails.txt		Delete_Duplicate_Emails.txt
Exchange Seats_SQL.txt		Exchange Seats_SQL.txt
Fill_NULLs_with_previous_value.ipynb		Fill_NULLs_with_previous_value.ipynb
Fill_NULLs_with_previous_value.txt		Fill_NULLs_with_previous_value.txt
GENERATE_SERIES_to_find_median.sql		GENERATE_SERIES_to_find_median.sql
Human_Traffic_of_Stadium.txt		Human_Traffic_of_Stadium.txt
Median_SQL.txt		Median_SQL.txt
Multiply_All_Values_In_Column_SQL.txt		Multiply_All_Values_In_Column_SQL.txt
Nth_Highest_Salary.txt		Nth_Highest_Salary.txt
README.md		README.md
RetentionRate_Cohorts.txt		RetentionRate_Cohorts.txt
RollingAverage_SQL.txt		RollingAverage_SQL.txt
Salesforce_1.ipynb		Salesforce_1.ipynb
Salesforce_2.ipynb		Salesforce_2.ipynb
Salesforce_3.ipynb		Salesforce_3.ipynb
TOP 3 authors who sold the most books in total.txt		TOP 3 authors who sold the most books in total.txt
TransposeTable.txt		TransposeTable.txt
TransposeTable_LongtoWide.txt		TransposeTable_LongtoWide.txt
[Тестовое_Альфа-банк]_Средняя_стоимость_5_покупки.txt		[Тестовое_Альфа-банк]_Средняя_стоимость_5_покупки.txt

Provide feedback