Postgres SQL is one of the open source Database Management Systems which is an amazing one. While there are many pros and cons of PostgresSQL over Oracle MySQL, PostgresSQL is definitely going to save a lot of time in terms of efficiency gains that you will do.

For example - Importing CSV file is easy in PostgresSQL and often if you will try importing CSV file to MySQL through Musqlworkbench, the entire data isn't imported in multiple attempts even after trying fixing the source files multiple times. PostgresSQL imports them without any issue.

Topics to master -

• How to install Postgres in macOS | Windows | Linux 
• How to import a CSV file into Postgres SQL?
• How to use SELECT statement to query records from Postgres Database Table?
• How to create a new table in a Postgres SQL Database?
• How to insert a new row in Postgres SQL Database table?
• How to use ORDER BY in SELECT statements to query results from Postgres SQL Database table?
• How to use WHERE in SELECT statements to query results from Postgres SQL Database table?
• How to filter results while using SELECT statement query in Postgres SQL?
• Commenting a Postgres query - Single line comment by -- and multi line comment through /* text here /*
• How to select similar values in Postgres using LIKE?
• How to add a new column to a table in Postgres SQL?
• How to add a value to existing column in a Postgres SQL table?