Want to import multiple CSV files into a single SQL Server table?
Try Withdata FileToDB, a desktop CSV to SQL Server converter for Windows, MacOS, and Linux, Convert CSV to SQL Server, 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 locally and privately, avoid uploading large or private CSV files to online services.
- Support Windows, Linux, and macOS.
Import multiple CSV files into a single SQL Server table
Login to SQL Server -> Choose CSV files -> Set SQL Server table -> Import CSV files to SQL Server table
Choose SQL Server and logon.
Click “Wizard – N Files To 1 Table” at task dialog.
Select the “CSV” file type.
then show the wizard.
1. Select a folder that constains CSV files.
Support large ( > 4GB ) CSV files.
2. Config first CSV file importing options.
3. Select a SQL Server table and config fields.
4. Preview data will be in SQL Server table.
5. Import multiple CSV files to the SQL Server table.
View imported data in SQL Server table
Import multiple CSV files to SQL Server in command line
Save “multiple CSV files to SQL Server” session, then you can:
- Import multiple CSV files to SQL Server in Windows command line.
- Import multiple CSV files to SQL Server in Linux command line.
- Import multiple CSV files to SQL Server in macOS command line.
Set scheduled tasks for importing multiple CSV files to SQL Server
You can schedule and automate this converting task by:
- Save session and create .bat (Windows) or .sh (Linux/macOS) file for “CSV to SQL Server” conversion.
- Set scheduled task for “CSV to SQL Server” conversion.
FAQ
More about Withdata FileToDB – CSV to SQL Server converter
Download Withdata FileToDB
See Video: Batch import data from multiple CSV files into a single SQL Server table in a few clicks
See also:
CSV → SQL Server reference
Type mapping
| Value kind | in CSV | in SQL Server |
|---|---|---|
| Int | 1234 | int |
| Bigint | 9007199254740993 | bigint |
| Decimal | 1234.56 | decimal(p,s) |
| Float | 1.234e+10 | float |
| Text | quoted only when it contains a comma or a quote | nvarchar(n) |
| Long text | must be quoted; line breaks inside force multi-line records | nvarchar(max) |
| Date | 2026-09-18 | date |
| Datetime | 2026-09-18 14:30:00 | datetime2 |
| Binary | not representable - base64 or hex string | varbinary(max) |
| Boolean | TRUE / FALSE, or 1 / 0 depending on the writer | bit |
| JSON | the whole JSON value quoted, with internal quotes doubled | nvarchar(max) |
Dialect differences
CSV is a file format and SQL Server is a database server, so the target has to be told the types the file never carried - the rows below are where the two sides diverge.
| Property | in CSV | in SQL Server |
|---|---|---|
| port | — | 1433 |
| identifiers | Double quotes; a literal quote is doubled ("" ) | [square brackets] |
| row limit | — | SELECT TOP n |
| dates | Conventional text: 2026-09-18 or 2026-09-18 14:30:00 | datetime, datetime2, date, time |
| long text | — | nvarchar(max) |
| binary | Not supported | varbinary(max) |
| separator | Comma "," | — |
| encoding | No declaration - UTF-8 works only with a BOM | — |
| typing | None - every field is text | — |
| shape | Flat table, optional header row | Tables of rows and columns |
| ceiling | No formal limit; row count bounded by memory | — |
Command line
| Side | Command |
|---|---|
| SQL Server | bcp |
| SQL Server (load) | bcp, or BULK INSERT |
Convert your data online, free
Free in-browser converters for CSV, Excel, JSON, XML and SQL: Withdata Online Data Conversion. Large files, batch conversion or scheduling? See the offline desktop apps, or browse all data conversion tools.
