QGIS Query Builder

Build SQL queries for QGIS layers with an intuitive visual interface

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About This Tool

The QGIS Query Builder is a powerful online tool that helps GIS professionals and enthusiasts create SQL-like queries for filtering QGIS layers. With a user-friendly interface, you can select layers, choose attributes, apply operators (like =, >, LIKE), and combine conditions with AND/OR logic. The tool generates a valid QGIS expression in real-time, provides a preview, and allows you to copy the query for direct use in QGIS Desktop or QGIS Server. No installation required—works entirely in your browser.

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How to Use

Select a sample layer from the dropdown (e.g., 'Cities', 'Rivers', 'Countries').
Choose an attribute from the selected layer (e.g., 'population', 'name').
Pick an operator (e.g., '=', '>', 'LIKE').
Enter a value for the condition (e.g., '1000000', 'New%').
Click 'Add Condition' to append it to the query.
Use the 'AND' or 'OR' buttons to add logical operators between conditions.
View the generated query in the preview area.
Click 'Generate Query' to see the final formatted SQL expression.
Copy the query with the 'Copy to Clipboard' button for use in QGIS.

Frequently Asked Questions

Find Quick Answers

What is QGIS Query Builder used for?

It helps create SQL expressions to filter vector layers in QGIS, such as selecting features based on attribute values (e.g., population > 1 million).

Does this tool require QGIS installation?

No, it's a standalone web tool. The generated queries can be copied and used in QGIS Desktop or QGIS Server.

Can I use custom layers or attributes?

Currently, the tool uses predefined sample layers with common attributes. Future versions may support custom data upload.

Is the query syntax compatible with all QGIS versions?

Yes, it generates standard SQL expressions that work with QGIS 3.x and later versions.

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