added readme

Author: dhavalsays

1_SalesInsights/README.md

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+## Sales Insights Data Analysis Project
+
+### Instructions to setup mysql on your local computer
+
+1. Follow step in this video to install mysql on your local computer
+https://www.youtube.com/watch?v=WuBcTJnIuzo
+
+1. SQL database dump is located [here](). Download `db_dump.sql` file to your local computer and import it as per instructions given in the tutorial video
+
+### Data Analysis Using SQL
+
+1. Show all customer records
+
+    `SELECT * FROM sales.customers;`
+
+1. Show total number of customers
+
+    `SELECT count(*) FROM sales.customers;`
+
+1. Show transactions for Chennai market (market code for chennai is Mark001
+
+    `SELECT * FROM sales.transactions where market_code='Mark001';`
+
+1. Show distrinct product codes that were sold in chennai
+
+    `SELECT distinct product_code FROM sales.transactions where market_code='Mark001';`
+
+1. Show transactions where currency is US dollars
+
+    `SELECT * from sales.transactions where currency="USD"`
+
+1. Show transactions in 2020 join by date table
+
+    `SELECT sales.transactions.*, sales.date.* FROM sales.transactions INNER JOIN sales.date ON sales.transactions.order_date=sales.date.date where sales.date.year=2020;`
+
+1. Show total revenue in year 2020,
+
+    `SELECT SUM(sales.transactions.sales_amount) FROM sales.transactions INNER JOIN sales.date ON sales.transactions.order_date=sales.date.date where sales.date.year=2020;`
+
+1. Show total revenue in year 2020 in Chennai
+
+    `SELECT SUM(sales.transactions.sales_amount) FROM sales.transactions INNER JOIN sales.date ON sales.transactions.order_date=sales.date.date where sales.date.year=2020
+and sales.transactions.market_code="Mark001";`
+
+
+Data Analysis Using Power BI
+============================
+
+1. Formula to create norm_amount column
+
+`= Table.AddColumn(#"Filtered Rows", "norm_amount", each if [currency] = "USD" or [currency] ="USD#(cr)" then [sales_amount]*75 else [sales_amount], type any)`
+
+
+