Naarestan/SQL_Invoicing_DB

*SQL* queries that I wrote to extract, modify and analyze data off of the 'Invoices Database'

SQL Invoicing & Store Databases

Objective: To write SQL queries to create tables out of 'invoicing' dataset, mostly for year 2019.

We summerized data using:

                    - Aggregate Functions
                    - GROUP BY Clauses
                    - HAVING Clauses
                    - ROLLUP Operator