CASE WHEN in SQL for Conditional Analysis in DA
When we analyze sales and marketing data, numbers alone are often not enough. We frequently need to...
Tag: SQL for Data Analysis
What Does COALESCE Do in SQL? Learn with Business Examples
When we work with real sales and marketing data, missing values are unavoidable. A customer may not...
How to Detect and Remove Outliers in SQL for Cleaner Analysis?
When you're working with real sales & marketing data, be prepared for outliers to pop up - beca...
What are Outliers in SQL for Data Analysis?
When working with actual sales and marketing data, the truth is, not all behaviors are normal. Most...
How to Use Window Functions for Totals and Ranks in SQL
When we move beyond basic SQL in data analysis, we often reach a point where simple GROUP BY querie...
SQL for Time-Series Analysis | Moving Averages and Lag/Lead
When we analyze trends in data analysis, we often work with values that change over time. Website t...
How to do A/B Test Analysis in SQL(Conversion Comparison)
When we work on product or marketing data in data analysis, one common task is comparing two versio...
What Are Window Functions in SQL?
When we move deeper into data analysis using SQL, we quickly realize that basic queries with SELECT...
How to Create Column Alias in SQL for better Query Readability
When we write SQL queries for data analysis, the output often looks technical and unfriendly. Colum...
How to Use LIMIT and TOP to Sample Large Datasets
When we work with real datasets in data analysis, tables can quickly grow into thousands or even mi...