JSON to SQL Converter
Generate MySQL, PostgreSQL or SQLite INSERT statements from JSON
Generated CREATE TABLE and INSERT statements will appear here.
About this tool
JSON to SQL Converter turns one object or an array of objects into executable-looking SQL text for MySQL, PostgreSQL, or SQLite. It builds the union of input fields, quotes identifiers for the selected dialect, escapes string literals, preserves null, number, and boolean semantics, and serializes nested values as JSON text. Optional schema inference produces a starter CREATE TABLE statement, while batching keeps large INSERT sets reviewable. Generated SQL should still be reviewed before database execution.
Scenario Recipes
Prepare a reviewable seed-data script
Goal: Turn a small JSON fixture into dialect-specific SQL
- Paste the object array and select the target database.
- Set a validated table name and enable schema inference if needed.
- Generate SQL, review inferred types and escaped values, then download it.
Result: A batched INSERT script with an optional starter table definition.
Frequently Asked Questions
Which SQL dialects are supported?
The generator supports MySQL, PostgreSQL, and SQLite identifier, boolean, and starter type conventions.
Can it infer a CREATE TABLE statement?
Yes. It infers a conservative starter type from all sample values in each column. Review the schema before production use.
How are nested objects and arrays handled?
They are serialized as JSON strings. PostgreSQL uses JSONB and MySQL uses JSON in the inferred schema when nested values exist.
What happens when objects have different fields?
The union of all keys becomes the column set, and missing values are emitted as SQL NULL.
Is generated SQL safe to execute without review?
No. Literal escaping and identifier validation reduce common errors, but schema, constraints, permissions, and target data must be reviewed.
Is JSON data sent to a database or server?
No. The tool only generates SQL text in the browser and never connects to a database.
Keep browsing