# Filtering & Checklist Queries

`dtsmartr` provides powerful column filtering tools, from quick checkboxes to complex logical query rules.

## 1. Column Quick Filters

Click the hamburger icon (≡) on any column to open the dedicated filter panel: - Categorical & Low Cardinality Columns: Columns with 20 or fewer unique values show a checklist. Search values dynamically, check the categories you want, and click Apply (or press Enter) to filter. - Continuous / Numeric Columns: Shows a text search input box. Type your filter query and press Enter to instantly filter matching values.

## 2. Advanced Query Builder

Click the Advanced Filter toggle on the top toolbar to reveal the rule-based Query Builder: - Create nested logical conditions using AND or OR connector groups. - Set complex column rules (operators like `equals`, `contains`, `in`, `greater than`, `is null`, etc.). - Combine quick filters and advanced rule conditions together (they evaluate concurrently).