Becoming a master at SQL

This is me learning SQL. Topics I covered, quizes I solved and challenges I tackled.

(A quick humble brag) I got a "Rank 1" and a "5 star Golden Badge" in Hackerrank SQL!

Name		Name	Last commit message	Last commit date
Latest commit History 6 Commits
Presentation.sql		Presentation.sql
README.md		README.md
codality.sql		codality.sql
hackerank.sql		hackerank.sql
parch-and-posey.sql		parch-and-posey.sql
sql_advanced_joins_performance_tuning.sql		sql_advanced_joins_performance_tuning.sql
sql_agregation.sql		sql_agregation.sql
sql_basic.sql		sql_basic.sql
sql_data_cleaning.sql		sql_data_cleaning.sql
sql_joins.sql		sql_joins.sql
sql_subqueries_temp_table.sql		sql_subqueries_temp_table.sql
sql_windows_function.sql		sql_windows_function.sql
test.sql		test.sql

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