Want to batch convert JSON files to SQL files?
Try Withdata Data File Converter, a desktop JSON to SQL converter for Windows, MacOS, and Linux, Batch convert JSON to SQL, Easy and Fast.
- Can run in GUI mode, Step by Step, just a few mouse clicks.
- Can run in Command line, for Scheduled Tasks and Streams.
- Convert files locally and privately, avoid uploading large JSON file(s) to online services.
- Support Windows, Linux, and macOS.
Batch convert JSON files to SQL files
Select source JSON files -> Set SQL files -> Convert JSON files to SQL files
Click “Start a New Convert” at task dialog.
then show the wizard.
Select From “Files” “JSON” To “Files” “SQL”.
1. Select source JSON files.
And config the first source JSON file.
2. Config target SQL files.
3. Summary.
List source JSON files.
4. Convert JSON files to SQL files, 1 JSON to 1 SQL.
After converting, you can view output SQL files.
More about JSON to SQL converter
Download Withdata DataFileConverter
See Video: Bulk convert JSON files to SQL files without coding
See also:
JSON → SQL reference
Type mapping
| Value kind | in JSON | in SQL |
|---|---|---|
| Int | 1234 (number) | INT |
| Bigint | 9007199254740993 | BIGINT |
| Decimal | 1234.56 (number) | DECIMAL(p,s) |
| Float | 1.234e10 (number) | DOUBLE PRECISION |
| Text | "text" (string) | VARCHAR(n) |
| Long text | "multi-line\ntext" (escaped newline inside a string) | TEXT / CLOB |
| Date | "2026-09-18" (string) | DATE |
| Datetime | "2026-09-18T14:30:00Z" (string) | TIMESTAMP |
| Binary | "base64:..." (string) | BLOB / BYTEA |
| Boolean | true / false (boolean) | BOOLEAN / SMALLINT |
| JSON | nested object or array, kept as structure | JSON / TEXT |
Dialect differences
Both JSON and SQL are file formats, so what differs below is how each one chooses to represent a value.
| Property | in JSON | in SQL |
|---|---|---|
| identifiers | Double quotes; backslash escapes | Two competing conventions: single-quoted literals and diale... |
| dates | No date type: dates arrive as strings and the reader must p... | Depends on the dialect: DATE literals, TO_DATE(), or plain ... |
| binary | Not supported natively - base64 inside a string | Dialect-specific: X-quoted literal, 0x hex, or decode() |
| separator | Braces and commas | Statement terminators (;) |
| encoding | UTF-8 by definition | No declaration |
| typing | string, number, boolean, null, object, array - no date type | Types belong to the target database, and they differ betwee... |
| shape | Nested objects and arrays | Statements; a dump usually means CREATE TABLE plus INSERT rows |
| ceiling | Whole document is usually parsed into memory | No formal limit, but a single INSERT statement has to fit i... |
Data File Converter without the manual work
For batch jobs, large files and scheduling use the Data File Converter converter — an offline desktop app for Windows, Linux and macOS. Free trial.
