Batch convert CSV files to SQL files

Shiji Pan

1 year ago

Want to batch convert CSV files to SQL files?

Try Withdata Data File Converter, a desktop CSV to SQL converter for Windows, MacOS, and Linux, Batch convert CSV 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 CSV 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” “CSV” To “Files” “SQL”.

And config the first source CSV file.

List source CSV files.

After converting, you can view output SQL files.

CSV → SQL reference

Value kind	in CSV	in SQL
Int	`1234`	`INT`
Bigint	`9007199254740993`	`BIGINT`
Decimal	`1234.56`	`DECIMAL(p,s)`
Float	`1.234e+10`	`DOUBLE PRECISION`
Text	`quoted only when it contains a comma or a quote`	`VARCHAR(n)`
Long text	`must be quoted; line breaks inside force multi-line records`	`TEXT / CLOB`
Date	`2026-09-18`	`DATE`
Datetime	`2026-09-18 14:30:00`	`TIMESTAMP`
Binary	`not representable - base64 or hex string`	`BLOB / BYTEA`
Boolean	`TRUE / FALSE, or 1 / 0 depending on the writer`	`BOOLEAN / SMALLINT`
JSON	`the whole JSON value quoted, with internal quotes doubled`	`JSON / TEXT`

Both CSV and SQL are file formats, so what differs below is how each one chooses to represent a value.

Property	in CSV	in SQL
identifiers	`Double quotes; a literal quote is doubled ("" )`	`Two competing conventions: single-quoted literals and diale...`
dates	`Conventional text: 2026-09-18 or 2026-09-18 14:30:00`	`Depends on the dialect: DATE literals, TO_DATE(), or plain ...`
binary	`Not supported`	`Dialect-specific: X-quoted literal, 0x hex, or decode()`
separator	`Comma ","`	`Statement terminators (;)`
encoding	`No declaration - UTF-8 works only with a BOM`	`No declaration`
typing	`None - every field is text`	`Types belong to the target database, and they differ betwee...`
shape	`Flat table, optional header row`	`Statements; a dump usually means CREATE TABLE plus INSERT rows`
ceiling	`No formal limit; row count bounded by 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.