SQL Query Results to JSON

Converting Database Query Output to JSON

SQL query results are tabular — rows and columns. When you need to use that data in JavaScript, pass it to an API, or load it into a tool that expects JSON, you need to convert the tabular format to a JSON array of objects. Our CSV-to-JSON converter handles this: export your SQL results as CSV and paste them here to get clean JSON.

Most database clients support CSV export: \copy (SELECT ...) TO stdout CSV HEADER in PostgreSQL, SELECT ... INTO OUTFILE in MySQL, and the export button in pgAdmin, DBeaver, TablePlus, and other GUI clients. Once you have the CSV, our tool converts it to JSON with column names as object keys.

This workflow is useful for: generating test fixtures from real data, building seed scripts for development databases, creating mock API responses that match production data, and processing query results in environments where a proper database driver isn't available.

Tips

• Use \copy (SELECT * FROM users LIMIT 100) TO stdout CSV HEADER in psql for a quick JSON-ready export.
• Column aliases in SQL become JSON keys: SELECT first_name AS firstName gives you camelCase keys in the JSON.
• NULL values become empty strings in CSV — convert them to JSON null manually or in your application.
• For large datasets, convert in code with a streaming CSV parser rather than pasting into a browser tool.