How SQL and Excel are right for tableau

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SQL and Excel are powerful tools that complement Tableau's data visualization capabilities. Tableau is a data visualization software or application that allows users to connect to and visualize data from various sources. You can integrate SQL and Excel with Tableau to enhance functionality and allow users to work efficiently with data. 

Reasons behind the growing hype of Data Visualization:

  • Data visualization tools and techniques allow for the quick and easy interpretation of complex data sets, helping businesses and individuals to identify trends, patterns, and outliers that you might otherwise miss.
  • Visualization tools have become more user-friendly, and cloud-based platforms have made it easier to share and collaborate on data visualization projects.
  • Infographics, charts, and interactive visualizations are more likely to be shared and engaged than traditional data reports or spreadsheets.
  • Finally, data visualization is an effective way to communicate data-driven insights to a broad audience. By presenting data visually appealing and engagingly, businesses and individuals can share complex information in a way that is easy to understand and memorable.

Here are eight points that explain how SQL and Excel are right for Tableau:

  • Data Preparation: Excel and SQL can help prepare data before feeding data into Tableau. Excel is an excellent tool for cleaning up and formatting data, such as removing duplicates or fixing formatting issues. SQL can filter and sort data and perform calculations before importing it into Tableau.
  • Data Connection: Both Excel and SQL can be used to connect to Tableau data sources. Excel can import data from various sources, such as spreadsheets, databases, or other files, which you can use in Tableau. Similarly, SQL can connect to multiple databases, and you can use SQL queries in Tableau.
  • Data Aggregation: SQL is a powerful data aggregation tool, allowing Tableau to work with large datasets more efficiently. SQL queries can summarize and group data, making it easier for Tableau to work with large datasets.
  • Data Blending: Tableau's data blending feature allows users to combine data from multiple sources. Excel can blend data from multiple spreadsheets, while SQL can integrate data from various databases. This feature enables Tableau to create more complex visualizations incorporating data from different sources.
  • Data Analysis: Excel is a popular tool for data analysis and can be used in conjunction with Tableau. For example, Excel can calculate statistics or perform regression analysis, which can then be used in Tableau. SQL can also be used for data analysis, such as computing averages or creating complex queries you can visualize in Tableau.
  • Data Exploration: Tableau is designed to help users explore data visually. However, SQL and Excel can also explore data before visualizing it in Tableau. You can use SQL to query databases and explore data in a more structured way. You can use Excel to create pivot tables, which can help users explore data quickly and efficiently.
  • Data Validation: Excel and SQL can validate data before visualizing it in Tableau. You can use Excel to perform data validation checks, such as checking for missing data or identifying outliers. SQL can also validate data by checking for duplicates or identifying inconsistencies.
  • Data Maintenance: Excel and SQL can be used to maintain data integrity over time. Excel can create templates or dashboards updated regularly with new data. You can use SQL to create stored procedures that you can use to edit or delete data in a database. This functionality allows Tableau to work with more up-to-date and accurate data.

SQL and Excel are powerful tools that can enhance Tableau's data visualization capabilities. You can use them for data preparation, connection, aggregation, blending, analysis, exploration, validation, and maintenance. By leveraging these tools, users can work with data more efficiently and create more sophisticated visualizations. 

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