MariaDB import multiple CSV files into a single table

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Want to import multiple CSV files into a single MariaDB table?

Try Withdata FileToDB, a desktop CSV to MariaDB converter for Windows, MacOS, and Linux, Convert CSV to MariaDB, 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.

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Import multiple CSV files into a single MariaDB table

Login to MariaDB -> Choose CSV files -> Set MariaDB table -> Import CSV files to MariaDB table

Choose MariaDB and logon.

import multiple CSV files to 1 MariaDB table - Choose MariaDB and logon

Click “Wizard – N Files To 1 Table” at task dialog.

import multiple CSV files to 1 MariaDB table - task window

Select the “CSV” file type.

load multiple CSV files to 1 MariaDB table - select file type

then show the wizard.

1. Select a folder that constains CSV files.

Support large ( > 4GB ) CSV files.

insert multiple CSV files to one MariaDB table - select a folder

2. Config first CSV file importing options.

import multiple CSV files to one MariaDB table - config first file

3. Select a MariaDB table and config fields.

Merge CSV files into a MariaDB table - select table

4. Preview data will be in MariaDB table.

put CSV files into a single MariaDB table - preview

5. Import multiple CSV files to the MariaDB table.

Merge CSV files into a MariaDB table - import data

View imported data in MariaDB table

load CSV files into a MariaDB table - view data

Import multiple CSV files to MariaDB in command line

Save “multiple CSV files to MariaDB” session, then you can:

Set scheduled tasks for importing multiple CSV files to MariaDB

You can schedule and automate this converting task by:

  1. Save session and create .bat (Windows) or .sh (Linux/macOS) file for “CSV to MariaDB” conversion.
  2. Set scheduled task for “CSV to MariaDB” conversion.

FAQ


More about Withdata FileToDB – CSV to MariaDB converter

See also:

CSV → MariaDB reference

Type mapping

Value kindin CSVin MariaDB
Int1234INT
Bigint9007199254740993BIGINT
Decimal1234.56DECIMAL(p,s)
Float1.234e+10DOUBLE
Textquoted only when it contains a comma or a quoteVARCHAR(n)
Long textmust be quoted; line breaks inside force multi-line recordsLONGTEXT
Date2026-09-18DATE
Datetime2026-09-18 14:30:00DATETIME
Binarynot representable - base64 or hex stringLONGBLOB
BooleanTRUE / FALSE, or 1 / 0 depending on the writerTINYINT(1)
JSONthe whole JSON value quoted, with internal quotes doubledJSON

Dialect differences

CSV is a file format and MariaDB 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.

Propertyin CSVin MariaDB
port—3306
identifiersDouble quotes; a literal quote is doubled ("" )`backtick`
row limit—LIMIT n
datesConventional text: 2026-09-18 or 2026-09-18 14:30:00DATETIME, TIMESTAMP, DATE, TIME
long text—TINYTEXT / TEXT / MEDIUMTEXT / LONGTEXT
binaryNot supportedBLOB / TINYBLOB / LONGBLOB
separatorComma ","—
encodingNo declaration - UTF-8 works only with a BOM—
typingNone - every field is text—
shapeFlat table, optional header rowTables of rows and columns
ceilingNo formal limit; row count bounded by memory—

Command line

SideCommand
MariaDBmariadb-dump
MariaDB (load)mariadb-import, or LOAD DATA INFILE

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