Batch convert JSON files to SQL files

Shiji Pan

1 year ago

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.

Click “Start a New Convert” at task dialog.

then show the wizard.

Select From “Files” “JSON” To “Files” “SQL”.

And config the first source JSON file.

List source JSON files.

After converting, you can view output SQL files.

JSON → SQL reference

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`

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...`

For batch jobs, large files and scheduling use the Data File Converter converter — an offline desktop app for Windows, Linux and macOS. Free trial.