Query Builder
Interactive Pandas Boolean Indexing & df.query() Playground
Build Your Query
Boolean Indexing Concept
Boolean indexing allows you to filter DataFrames using conditions that return True/False values. When you apply a boolean condition to a DataFrame, it returns only the rows where the condition evaluates to True.
Query Conditions
# Boolean indexing code will appear here
# Example: df[df['Age'] > 30]
# df.query() code will appear here
# Example: df.query("Age > 30")
Results
How to Use This Tool
1. Select a dataset from the options above
2. Build your query by adding conditions
3. Use AND/OR logic to combine conditions
4. Click "Run Query" to see the filtered results
5. Compare the Boolean indexing and df.query() syntax
Query Information
Original Rows:
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Filtered Rows:
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Rows Returned:
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Filter Efficiency:
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Boolean Indexing vs df.query()
Boolean Indexing uses standard Python syntax and is more flexible for complex operations.
df.query() uses a string expression, which can be more readable for simple conditions and allows using column names with spaces when quoted.