How you can write SELECT queries to fetch related information in PostgreSQL and MySQLHow to filter and kind the information utilizing WHEN, logical operators and ORDER BYHow to group and mixture information in PostgreSQL and MySQLHow to use joins and combining queries in PostgreSQL and MySQLString, mathematical, date-time features and sample matching in
PostgreSQL and MySQLUnderstanding of VIEWS and INDEXES in PostgreSQL and MySQLHow to write down subqueries in PostgreSQL and MySQL


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