SQL Project_PG DSBA _Part-1(SQLite) Write a query to Display the product details (product_class_code

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Project Problem Statement You are hired by a chain of online retail stores “Reliant retail limited”. They provided you with “orders” database and seek answers to the following queries as the results from these queries will help the company in making data-driven decisions that will impact the overall growth of the online retail store.

Objective of the Project 1st part(Q1-Q6) comes under SQLite and queries should be executed in DB Browser.

(Database used- New Orders.db) 2nd part(Q7-Q10) comes under MYSQL and the queries should be executed in MYSQL. (SQL Script used - new Orders.sql) ERR Diagram

SQL Project 16th May 2021

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PG DSBA

Part-1(SQLite) Question 1 1) Write a query to Display the product details (product_class_code, product_id, product_desc, product_price,) as per the following criteria and sort them in descending order of category: a) If the category is 2050, increase the price by 2000 b) If the category is 2051, increase the price by 500 c) If the category is 2052, increase the price by 600.

Hint: Use case statement. no permanent change in table required. (60 ROWS) [NOTE: PRODUCT TABLE] SOLUTION - Considered PRODUCT_CLASS_CODE as CATAGORY. Query SELECT PRODUCT_CLASS_CODE AS 'Product Catagory', PRODUCT_ID AS 'Product ID', PRODUCT_DESC AS 'Product Description', PRODUCT_PRICE AS 'Actual Price', CASE PRODUCT_CLASS_CODE WHEN 2050 THEN PRODUCT_PRICE+2000 -- Increase Price for Category 2050 WHEN 2051 THEN PRODUCT_PRICE+500 -- Increase Price for Category 2051 WHEN 2052 THEN PRODUCT_PRICE+600 -- Increase Price for Category 2052 ELSE PRODUCT_PRICE END AS 'Calculated Price' FROM PRODUCT -- Decending order by category(Product Class Code) ORDER BY PRODUCT_CLASS_CODE DESC; Output

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2.

Write a query to display (product_class_desc, product_id, product_desc, product_quantity_avail) and Show inventory status of products as below as per their available quantity: 1. For Electronics and Computer categories, if available quantity is <= 10, show 'Low stock', 11 <= qty <= 30, show 'In stock', >= 31, show 'Enough stock' 2. For Stationery and Clothes categories, if qty <= 20, show 'Low stock', 21 <= qty <= 80, show 'In stock', >= 81, show 'Enough stock' 3. Rest of the categories, if qty <= 15 – 'Low Stock', 16 <= qty <= 50 – 'In Stock', >= 51 – 'Enough stock' For all categories, if available quantity is 0, show 'Out of stock'.

Hint: Use case statement.

(60 ROWS) [NOTE: TABLES TO BE USED – product, product_class] Query SELECT

PC.PRODUCT_CLASS_DESC AS 'Product Category', P.PRODUCT_ID AS 'Product ID', P.PRODUCT_DESC AS 'Product Description', P.PRODUCT_QUANTITY_AVAIL AS 'Product Availability', CASE -- Electronics(2050) and Computer (2053) WHEN PC.PRODUCT_CLASS_CODE IN (2050,2053) THEN CASE WHEN P.PRODUCT_QUANTITY_AVAIL =0 THEN 'Out of stock' -- Out of stock criteria WHEN P.PRODUCT_QUANTITY_AVAIL <=10 THEN 'Low stock' WHEN (P.PRODUCT_QUANTITY_AVAIL >=11 AND P.PRODUCT_QUANTITY_AVAIL <=30) THEN 'In stock' WHEN (PRODUCT_QUANTITY_AVAIL >=31) THEN 'Enough stock' END -- Stationery(2052) and Clothes(2056) WHEN PC.PRODUCT_CLASS_CODE IN (2052,2056) THEN CASE WHEN P.PRODUCT_QUANTITY_AVAIL =0 THEN 'Out of stock' -- Out of stock criteria WHEN P.PRODUCT_QUANTITY_AVAIL <=20 THEN 'Low stock' WHEN (P.PRODUCT_QUANTITY_AVAIL >=21 AND P.PRODUCT_QUANTITY_AVAIL <=80) THEN 'In stock' WHEN (PRODUCT_QUANTITY_AVAIL >=81) THEN 'Enough stock' END -- Rest of the categories ELSE CASE WHEN P.PRODUCT_QUANTITY_AVAIL =0 THEN 'Out of stock' -- Out of stock criteria WHEN P.PRODUCT_QUANTITY_AVAIL <=15 THEN 'Low stock' WHEN (P.PRODUCT_QUANTITY_AVAIL >=16 AND P.PRODUCT_QUANTITY_AVAIL <=50) THEN 'In stock' WHEN (PRODUCT_QUANTITY_AVAIL >=51) THEN 'Enough stock' END END AS 'Inventory Status' FROM PRODUCT P -- Join the Product and Product Class TABLE based on the Product Class Code INNER JOIN PRODUCT_CLASS PC ON P.PRODUCT_CLASS_CODE = PC.PRODUCT_CLASS_CODE -- Let’s do order by Product Class Code and available quantity by descending ORDER BY P.PRODUCT_CLASS_CODE,P.PRODUCT_QUANTITY_AVAIL DESC;

Output

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3.

Write a query to Show the count of cities in all countries other than USA & MALAYSIA, with more than 1 city, in the descending order of CITIES. (2 rows) [NOTE: ADDRESS TABLE, Do not use Distinct]

Query

Output

SELECT COUNT(CITY) AS Count_of_Cites, -- Count Of The Cities COUNTRY AS Country FROM ADDRESS GROUP BY COUNTRY -- Count of cities more than 1 and exclude the USA and Malaysia HAVING COUNTRY NOT IN ('USA','Malaysia') AND COUNT(CITY) > 1 -- Descending order of count of cities ORDER BY Count_of_Cites DESC;

4.

Write a query to display the customer_id,customer full name ,city,pincode,and order details (order id,order date, product class desc, product desc, subtotal(product_quantity * product_price)) for orders shipped to cities whose pin codes do not have any 0s in them. Sort the output on customer name, order date and subtotal. (52 ROWS) [NOTE: TABLE TO BE USED - online_customer, address, order_header, order_items, product, product_class]

Query SELECT

OC.CUSTOMER_ID AS 'Customer ID', OC.CUSTOMER_FNAME || ' ' || OC.CUSTOMER_LNAME AS 'Customer Full Name' , A.CITY AS 'City', A.PINCODE AS 'Pin Code', OH.ORDER_ID AS 'Order Id', PC.PRODUCT_CLASS_DESC AS 'Product Class Description', P.PRODUCT_DESC AS 'Product Description', P.PRODUCT_PRICE AS 'Product Price', OI.PRODUCT_QUANTITY AS 'Product Order Quantity', (P.PRODUCT_PRICE * OI.PRODUCT_QUANTITY) AS Sub_Total -- Calculated value Total Price

FROM ONLINE_CUSTOMER OC INNER JOIN ADDRESS A ON OC.ADDRESS_ID = A.ADDRESS_ID -- Join the Address table to fetch the City and Pincode details.

INNER JOIN ORDER_HEADER OH ON OH.CUSTOMER_ID = OC.CUSTOMER_ID INNER JOIN ORDER_ITEMS OI ON OI.ORDER_ID = OH.ORDER_ID -- For Product Order Quantity INNER JOIN PRODUCT P ON P.PRODUCT_ID = OI.PRODUCT_ID -- For Product Price INNER JOIN PRODUCT_CLASS PC ON PC.PRODUCT_CLASS_CODE = P.PRODUCT_CLASS_CODE -- For Product Class Description (Category) -- Filter the data which is shipped and Pin code does not have value 0.

WHERE OH.ORDER_STATUS='Shipped' AND A.PINCODE NOT LIKE '%0%' -- Order by customer name and subtotal.

ORDER BY OC.CUSTOMER_FNAME, Sub_Total;

Output

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5.

Write a Query to display product id,product description,totalquantity (sum(product quantity) for an item which has been bought maximum no. of times along with product id 201. (USE SUB-QUERY) (1 ROW) [NOTE: ORDER_ITEMS TABLE, PRODUCT TABLE]

Query SELECT OI.PRODUCT_ID AS Product_ID, -- 2. Look for other product_id that are brought along with product_id 201 P.PRODUCT_DESC AS Product_Description, -- 4. Get the Product Description from Product Table SUM(OI.PRODUCT_QUANTITY) AS Total_Quantity-- 3. Total quantity(sum(product quantity) for each product_id that was brought along with product_id 201 FROM ORDER_ITEMS OI INNER JOIN PRODUCT P ON P.PRODUCT_ID = OI.PRODUCT_ID -- Join the Product Table to fetch the description WHERE OI.ORDER_ID IN ( -- 1. Pull out all the orders that have the product_id 201 SELECT DISTINCT ORDER_ID FROM ORDER_ITEMS A WHERE PRODUCT_ID = 201 ) AND OI.PRODUCT_ID <> 201 GROUP BY OI.PRODUCT_ID ORDER BY Total_Quantity DESC -- 5. Sort by Total_Quantity on descending LIMIT 1; -- 6. Show the first row

Output

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6.

Write a query to display the customer_id,customer name, email and order details (order id, product desc,product qty, subtotal(product_quantity * product_price)) for all customers even if they have not ordered any item.

(225 ROWS) [NOTE: TABLE TO BE USED - online_customer, order_header, order_items, product]

Query SELECT OC.CUSTOMER_ID AS Customer_ID, (OC.CUSTOMER_FNAME ||' '|| OC.CUSTOMER_LNAME) AS Customer_Full_Name, OC.CUSTOMER_EMAIL AS Customer_Email, O.ORDER_ID AS Order_ID, P.PRODUCT_DESC AS Product_Description, OI.PRODUCT_QUANTITY AS Purchase_Quantity, P.PRODUCT_PRICE AS Product_Price, (OI.PRODUCT_QUANTITY*P.PRODUCT_PRICE) AS Subtotal -- Calulated value Total Price FROM ONLINE_CUSTOMER OC LEFT JOIN ORDER_HEADER O ON OC.CUSTOMER_ID = O.CUSTOMER_ID -- Join the Order header to fetch the order id and connect product and customer LEFT JOIN ORDER_ITEMS OI ON O.ORDER_ID = OI.ORDER_ID -- For Prodcut Quantity LEFT JOIN PRODUCT P ON OI.PRODUCT_ID = P.PRODUCT_ID -- For Product Price ORDER BY Customer_ID,Purchase_Quantity DESC; -- Lets Order by Customer_ID and Purchase_Quantitity

Output

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Part-2(MySQL) 7.

Write a query to display carton id, (len*width*height) as carton_vol and identify the optimum carton (carton with the least volume whose volume is greater than the total volume of all items (len * width * height * product_quantity)) for a given order whose order id is 10006, Assume all items of an order are packed into one single carton (box). (1 ROW) [NOTE: CARTON TABLE]

Query SELECT C.CARTON_ID AS Carton_ID, (C.LEN*C.WIDTH*C.HEIGHT) as Carton_Volume FROM ORDERS.CARTON C WHERE (C.LEN*C.WIDTH*C.HEIGHT) >= ( -- Subquery to take volume details from both Order_items and Product tables.

SELECT SUM(P.LEN*P.WIDTH*P.HEIGHT*OI.PRODUCT_QUANTITY) AS VOL -- Optimum carton value FROM ORDERS.ORDER_ITEMS OI INNER JOIN ORDERS.PRODUCT P ON OI.PRODUCT_ID = P.PRODUCT_ID -- Join to get the LEN, WIDTH and HEIGHT WHERE OI.ORDER_ID =10006 ## Filtered the only Order ID 10006) ORDER BY (C.LEN*C.WIDTH*C.HEIGHT) ASC LIMIT 1; # Order by descending will arrange the outcome in decreasing order of Product of Len*Wodth*Height, and Limit 1 will display only 1 record

Output

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8.

Write a query to display details (customer id,customer fullname,order id,product jquantity) of customers who bought more than ten (i.e. total order qty) products per shipped order. (11 ROWS) [NOTE: TABLES TO BE USED - online_customer, order_header, order_items,]

Query SELECT OC.CUSTOMER_ID AS Customer_ID, CONCAT(CUSTOMER_FNAME,' ',CUSTOMER_LNAME) AS Customer_FullName, OH.ORDER_ID AS Order_ID, SUM(OI.PRODUCT_QUANTITY) AS Total_Order_Quantity FROM ONLINE_CUSTOMER OC INNER JOIN ORDER_HEADER OH ON OH.CUSTOMER_ID = OC.CUSTOMER_ID -- To connect the Order and Customer details.

INNER JOIN ORDER_ITEMS OI ON OI.ORDER_ID = OH.ORDER_ID -- To fetch the Product Quantity.

WHERE OH.ORDER_STATUS = 'Shipped' -- To check for order_status whether it is shipped.

GROUP BY OH.ORDER_ID HAVING Total_Order_Quantity > 10 -- To check the Total Order Quality is greater than 10.

ORDER BY CUSTOMER_ID;

Output

9.

Write a query to display the order_id, customer id and cutomer full name of customers along with (product_quantity) as total quantity of products shipped for order ids > 10060. (6 ROWS) [NOTE: TABLES TO BE USED - online_customer, order_header, order_items]

Query SELECT OC.CUSTOMER_ID AS Customer_ID, CONCAT(CUSTOMER_FNAME,' ',CUSTOMER_LNAME) AS Customer_FullName, OH.ORDER_ID AS Order_ID, SUM(OI.PRODUCT_QUANTITY) AS Total_Order_Quantity FROM ONLINE_CUSTOMER OC INNER JOIN ORDER_HEADER OH ON OH.CUSTOMER_ID = OC.CUSTOMER_ID -- To connect the Order and Customer details.

INNER JOIN ORDER_ITEMS OI ON OI.ORDER_ID = OH.ORDER_ID -- To fetch the Product Quantity.

WHERE OH.ORDER_STATUS = 'Shipped' AND OH.ORDER_ID > 10060 -- To check for order_status whether it is shipped.

GROUP BY OH.ORDER_ID ORDER BY Customer_FullName;

Output

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10. Write a query to display product class description ,total quantity (sum(product_quantity),Total value (product_quantity * product price) and show which class of products have been shipped highest(Quantity) to countries outside India other than USA? Also show the total value of those items.

(1 ROWS)[NOTE:PRODUCT TABLE,ADDRESS TABLE,ONLINE_CUSTOMER TABLE,ORDER_HEADER TABLE,ORDER_ITEMS TABLE,PRODUCT_CLASS TABLE] Query SELECT PC.PRODUCT_CLASS_CODE AS Product_Class_Code, PC.PRODUCT_CLASS_DESC AS Product_Class_Description, SUM(OI.PRODUCT_QUANTITY) AS Total_Quantity, SUM(OI.PRODUCT_QUANTITY*P.PRODUCT_PRICE) AS Total_Value FROM ORDER_ITEMS OI INNER JOIN ORDER_HEADER OH ON OH.ORDER_ID = OI.ORDER_ID -- Join to connect Online Customer INNER JOIN ONLINE_CUSTOMER OC ON OC.CUSTOMER_ID = OH.CUSTOMER_ID INNER JOIN PRODUCT P ON P.PRODUCT_ID = OI.PRODUCT_ID INNER JOIN PRODUCT_CLASS PC ON PC.PRODUCT_CLASS_CODE = P.PRODUCT_CLASS_CODE INNER JOIN ADDRESS A ON A.ADDRESS_ID = OC.ADDRESS_ID -- To retrive the country details.

WHERE OH.ORDER_STATUS ='Shipped' AND A.COUNTRY NOT IN('India','USA') # Order status as Shipped & country without India and USA. GROUP BY PC.PRODUCT_CLASS_CODE,PC.PRODUCT_CLASS_DESC ORDER BY Total_Quantity DESC -- Order by Total_Quality LIMIT 1;

Output

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