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Data-Analyst-Portforlio-Projects

DA-Portfolio Projects with Python, SQL and Tableau Build From Scratch

Project 1. Revenue & Profit Dashboard with Excel, Also combing data from Multiple sheets using VLOOKUP.

Revenue & Profit Dashboard with Excel - Download Workbook here: https://github.com/sheddyranking/DA-Portforlio-Projects/blob/main/Revenue%20%26%20%20Profit%20Dashboard-Excel.xlsx

combing data from Multiple sheets using VLOOKUP - Downnload Worksheet here: https://github.com/sheddyranking/DA-Portforlio-Projects/blob/main/Vlookups.xlsx

Screenshot (326)

Screenshot (325)

Project 2. SQL Data Exploration.(Covid_19 Dataset)

The SQL Exploratory Queries

https://github.com/sheddyranking/DA-Portforlio-Projects/blob/main/1.SQL%20Data%20Exploration/Data_Exploration.sql

The Exploratory Tables To be used In Project 2.

https://github.com/sheddyranking/DA-Portforlio-Projects/tree/main/1.SQL%20Data%20Exploration/Exploratory%20Tables

Note:

When importing Excel Workbook Data into the Microsoft SQL Studio, Open the SQL Import and Export Wizard Directly Else you will hit an Error.

Red error lines on SQL temp tables:

You need to rebuild your IntelliSense cache, The SSMS keyboard shortcut for this is CTRL+SHIFT+R.

Alternatively, you can go to Edit → IntelliSense → Refresh Local Cache.

Use the Cast Function to Rename a Column DataType

The common table expression (CTE) is a temporary named result set that you can reference within a SELECT, INSERT, UPDATE, or DELETE statement. You can also use a CTE in a CREATE a view, as part of the view's SELECT query.

IF the Number of Columns in the CTE is different from the Reference Statement it's gonna give an Error.

Database view's can be used to Store Exploratory Data into Tables for Data Visualizations

Project 3. Tableau Visualization.

Covid19 Analysis Dasboard

The Visual Consist:

Global Numbering

Total Deaths Per Continent

Avergae Percentage Population Infected per country (Selected)

Percentage Population Infected Per Country On a Map.

PowerPoint Presentation

https://github.com/sheddyranking/DA-Portforlio-Projects/blob/main/2.Tableau%20Visualization/Covid19%20Dashboard.pptx

World Covid19 Analysis Dashboard

Project 4. Data Cleaning in SQL. (Nashville Housising Dataset)

https://github.com/sheddyranking/DA-Portforlio-Projects/blob/main/3.Data%20Cleaning%20in%20%20SQl/Data%20cleaning%20in%20sql.sql

Note:

When ever Excel Columns Generate NULL Values when Imported into SSMS, save the worksheet as .CSV and import as a flat file from task when reviewing the data, uncheck the DataTypes indicator.

When Splitting an Address the PARSENAME Function is more preferable to SUBSTRINGS

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DA- Portfolio Projects with SQL and Tableau Build from Scratch

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