https://github.com/aad99bxp/sqldataexploration
Exploring various insights from Our World In Data Covid-19 Dataset. Imported the dataset in MS SQL Server and ran queries to undercover various insights in the data.
https://github.com/aad99bxp/sqldataexploration
excel sql sqlserver
Last synced: about 1 year ago
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Exploring various insights from Our World In Data Covid-19 Dataset. Imported the dataset in MS SQL Server and ran queries to undercover various insights in the data.
- Host: GitHub
- URL: https://github.com/aad99bxp/sqldataexploration
- Owner: aad99bxp
- Created: 2022-07-14T09:05:17.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2022-07-20T18:21:42.000Z (over 3 years ago)
- Last Synced: 2025-01-22T04:11:19.333Z (about 1 year ago)
- Topics: excel, sql, sqlserver
- Homepage:
- Size: 8.79 KB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
# SQLdataExploration
Exploring various insights from Our World In Data Covid-19 Dataset. Imported the dataset in MS SQL Server and ran queries to undercover various insights in the data.
## Tools Used
Excel, MS SQL Server
## Dataset
Dataset Can Be Downloaded From : https://ourworldindata.org/covid-deaths
## Tutorial
I did this project from a yotube video made by Alex The Analyst Youtube Channel. The url of the video : https://www.youtube.com/watch?v=qfyynHBFOsM&ab_channel=AlexTheAnalyst
## What did I actually do in this project ?
1. Downloaded the dataset from the link above.
2. Made two excel workbooks from a single csv file that was downloaded in step 1.
3. Created a Database in MS SQL Server.
4. Imported the two excel workbooks into the MS SQL server.
5. Performed queries to find different insights from the data. ( I have also performed my own queries along with the queries done by Alex in the video tutorial.)
6. Finally uploading the SQL queries on Github.
## What did I Learn ?
This is a beginner level project. And as a beginner, it gave me more clarity in performing SQL queries. Here are the points below that I learnt from this project :
1. How to import excel workbooks in MS SQL Server.
2. Null value is eliminated by an aggregate function or other set operator while performing operation.
3. Cast() & Convert() function in SQL Server.
4. Use Of CTE.
5. Order by 1,2 or Order by 3,4 meaning
6. sum(max()) is not possible.