5 Ways to Create a New Column Based on Values from Other Columns in Pandas

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Optimizing Date and Time Conversion Across Different Database Systems: A Comparative Analysis

Grouping Data by Foreign Key and Date with Total by Date Using Conditional Aggregation

SQLite: Using Conditional Aggregation and Pivoting to Select Multiple Counts from a Single Column

Unpivoting a Query in Presto to Get Column Names Based on Condition

Removing Duplicate Rows and Transforming Date Columns in SQL

Alternatives to PIVOT: Using CASE for Data Manipulation Instead

Oracle SQL Query Examples: Grouping and Filtering Data in the data_tab Table

Understanding the Differences Between Pandas Pivot Output in Older and Newer Versions of Pandas