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https://github.com/thanhloc81/sql-project-bicycles-practise
✨ Utilizing SQL to extract data following a simulated task involving the Sales and Product modules
https://github.com/thanhloc81/sql-project-bicycles-practise
adventureworks bicycle bigquery google-cloud sql
Last synced: about 1 month ago
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✨ Utilizing SQL to extract data following a simulated task involving the Sales and Product modules
- Host: GitHub
- URL: https://github.com/thanhloc81/sql-project-bicycles-practise
- Owner: thanhloc81
- Created: 2024-07-06T02:48:29.000Z (4 months ago)
- Default Branch: main
- Last Pushed: 2024-07-06T06:39:48.000Z (4 months ago)
- Last Synced: 2024-09-24T23:01:24.213Z (about 2 months ago)
- Topics: adventureworks, bicycle, bigquery, google-cloud, sql
- Homepage:
- Size: 16.6 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# SQL-Project-Bicycles-Practise
✨ Using SQL to extract data following a simulated task
[Link BigQuery](https://console.cloud.google.com/bigquery?sq=400862878778:f171ee5c3bd14daebaf2efc24e417309)
## Dataset
- Utilizing the Adventure Works dataset, which consists of two main modules: Sales and Product.
## Tools
- Google BigQuery
## Practise
### Question 1: Calc Quantity of items, Sales value & Order quantity by each Subcategory in L12M
``````sql
SELECT
EXTRACT(MONTH from SOD.ModifiedDate) Month,
EXTRACT(YEAR from SOD.ModifiedDate) Year,
FORMAT_TIMESTAMP('%b %Y', SOD.ModifiedDate) AS Period,
PPS.Name,
SUM(OrderQty) AS Qty_item,
SUM(LineTotal) AS Total_sales,
COUNT(DISTINCT SalesOrderID) AS Order_cnt
FROM
adventureworks2019.Sales.SalesOrderDetail SOD
LEFT JOIN
adventureworks2019.Production.Product PP
ON SOD.ProductID = PP.ProductID
LEFT JOIN
adventureworks2019.Production.ProductSubcategory PPS
ON PPS.ProductSubcategoryID = CAST(PP.ProductSubcategoryID AS INT)
WHERE CAST(SOD.ModifiedDate AS DATE) >= (
SELECT
DATE_SUB(CAST(MAX(ModifiedDate) AS DATE), INTERVAL 12 MONTH)
FROM
adventureworks2019.Sales.SalesOrderHeader
)
GROUP BY
1, 2, 3, 4
ORDER BY
1, 2;
``````
#### Results
### Question 2: Calc % YoY growth rate by SubCategory & release top 3 cat with highest grow rate. Round results to 2 decimal
``````sql
WITH cte AS (
SELECT
EXTRACT(YEAR FROM SOD.ModifiedDate) AS Year,
PPS.Name,
SUM(OrderQty) AS Qty_item
FROM
adventureworks2019.Sales.SalesOrderDetail SOD
LEFT JOIN
adventureworks2019.Production.Product PP
ON SOD.ProductID = PP.ProductID
LEFT JOIN
adventureworks2019.Production.ProductSubcategory PPS
ON PPS.ProductSubcategoryID = CAST(PP.ProductSubcategoryID AS INT)
GROUP BY
1, 2
ORDER BY
1 DESC
)
SELECT
Name,
Qty_item,
LEAD(qty_item, 1) OVER(PARTITION BY Name ORDER BY year DESC, Name ASC) AS Prv_qty,
ROUND((qty_item / LEAD(qty_item, 1) OVER(PARTITION BY Name ORDER BY year DESC, Name ASC)) - 1, 2) AS Qty_diff
FROM
cte
ORDER BY
4 DESC
LIMIT
3;
``````
#### Results
### Question 3: Ranking Top 3 TeritoryID with biggest Order quantity of every year. If there's TerritoryID with same quantity in a year, do not skip the rank number
``````sql
WITH cte AS (
SELECT
EXTRACT(YEAR FROM SOD.ModifiedDate) AS Year,
TerritoryID,
COUNT(OrderQty) AS Order_cnt
FROM
adventureworks2019.Sales.SalesOrderDetail SOD
LEFT JOIN
adventureworks2019.Sales.SalesOrderHeader SOH
ON SOD.SalesOrderID = SOH.SalesOrderID
GROUP BY
1, 2
)
SELECT *
FROM (
SELECT *,
DENSE_RANK() OVER(PARTITION BY year ORDER BY order_cnt DESC) AS Rank
FROM
cte
)
WHERE Rank <= 3
ORDER BY
1 DESC;
``````
#### Results
### Question 4: Calc Total Discount Cost belongs to Seasonal Discount for each SubCategory
``````sql
SELECT
EXTRACT(YEAR FROM SOD.ModifiedDate) AS Year,
PPS.Name,
SUM(UnitPrice * DiscountPct * OrderQty) AS total_cost
FROM
adventureworks2019.Sales.SalesOrderDetail SOD
LEFT JOIN
adventureworks2019.Production.Product PP
ON SOD.ProductID = PP.ProductID
LEFT JOIN
adventureworks2019.Production.ProductSubcategory PPS
ON PPS.ProductSubcategoryID = CAST(PP.ProductSubcategoryID AS INT)
LEFT JOIN
adventureworks2019.Sales.SpecialOffer SSO
ON SSO.SpecialOfferID = SOD.SpecialOfferID
WHERE
Type LIKE 'Seasonal Discount'
GROUP BY
1, 2;
``````
#### Results
### Question 5: Retention rate of Customer in 2014 with status of Successfully Shipped (Cohort Analysis)
``````sql
WITH total_cus AS (
SELECT
EXTRACT(MONTH FROM ModifiedDate) AS month,
CustomerID
FROM
adventureworks2019.Sales.SalesOrderHeader
WHERE
EXTRACT(YEAR FROM ModifiedDate) = 2014
AND Status = 5
)
,first_buy AS (
SELECT
*,
ROW_NUMBER() OVER (PARTITION BY CustomerID ORDER BY month) AS rk
FROM
total_cus
)
SELECT
t2.month month,
CONCAT('M-', t1.month - t2.month) SubsequentMonth,
COUNT(DISTINCT t2.CustomerID) NumberCustomer
FROM
total_cus t1
LEFT JOIN
first_buy t2
ON t1.month >= t2.month AND t2.CustomerID = t1.CustomerID
GROUP BY
1, 2
ORDER BY
1, 2;
``````
#### Results
### Question 6: Trend of Stock level & MoM diff % by all product in 2011. If %gr rate is null then 0. Round to 1 decimal
``````sql
WITH cte AS (
SELECT
PP.Name,
EXTRACT(MONTH FROM PWO.ModifiedDate) AS Month,
EXTRACT(YEAR FROM PWO.ModifiedDate) AS Year,
SUM(StockedQty) AS Stock_current
FROM
adventureworks2019.Production.Product PP
LEFT JOIN
adventureworks2019.Production.WorkOrder PWO
ON PP.ProductID = PWO.ProductID
WHERE
EXTRACT(YEAR FROM PWO.ModifiedDate) = 2011
GROUP BY
1, 2, 3
)
SELECT
*,
CASE
WHEN (Stock_current - Stock_pre) * 100.0 / Stock_pre IS NOT NULL
THEN ROUND((Stock_current - Stock_pre) * 100.0 / Stock_pre, 1)
ELSE 0.0
END AS Diff
FROM (
SELECT
*,
LEAD(Stock_current, 1) OVER(PARTITION BY Name ORDER BY Month DESC) AS Stock_pre
FROM
cte
)
ORDER BY
Name;
``````
#### Results
### Question 7: Calc Ratio of Stock / Sales in 2011 by product name, by month. Order results by month desc, ratio desc. Round Ratio to 1 decimal mom yoy
``````sql
WITH cte1 AS (
SELECT
EXTRACT(MONTH FROM SOD.ModifiedDate) AS Month,
EXTRACT(YEAR FROM SOD.ModifiedDate) AS Year,
PP.ProductID,
PP.Name,
SUM(SOD.OrderQty) AS Order_Qty
FROM
adventureworks2019.Sales.SalesOrderDetail SOD
LEFT JOIN
adventureworks2019.Production.Product PP
ON PP.ProductID = SOD.ProductID
WHERE
EXTRACT(YEAR FROM SOD.ModifiedDate) = 2011
GROUP BY
1, 2, 3, 4
),
cte2 AS (
SELECT
EXTRACT(MONTH FROM PWO.ModifiedDate) AS Month,
EXTRACT(YEAR FROM PWO.ModifiedDate) AS Year,
PWO.ProductID,
Name,
SUM(StockedQty) AS Stock_Qty
FROM
adventureworks2019.Production.WorkOrder PWO
LEFT JOIN
adventureworks2019.Production.Product PP
ON PP.ProductID = PWO.ProductID
WHERE
EXTRACT(YEAR FROM PWO.ModifiedDate) = 2011
GROUP BY
1, 2, 3, 4
)
SELECT
cte2.Month,
cte2.Year,
cte2.ProductID,
cte2.Name,
COALESCE(Order_Qty, 0) Total_Order_Qty,
COALESCE(Stock_Qty, 0) Total_Stock_Qty,
ROUND(Stock_Qty / NULLIF(Order_Qty, 0), 2) AS Ratio
FROM
cte2
LEFT JOIN
cte1 ON cte1.ProductID = cte2.ProductID
AND cte1.Month = cte2.Month
ORDER BY
1 DESC, 7 DESC;
``````
#### Results
