ODBC Driver for MySQL

Connection String Options - MySQL ODBC Driver

MySQL Connection Options

The following table describes the options that you can include in the connection string for MySQL:

Option Description


Serves to supply the server name for login.


Used to specify the port number for the connection. 3307 by default.

User ID

Used to supply a user name for login.


Used to supply a password for login.


Used to set the name of the database


Used to work without using MySQL client library (libmysql.dll).


Used to specify the embedded server that will be used to connect.


Used to set the character set that ODBC driver for MySQL uses to read and write character data.


Informs server that all data between client and server sides will be passed in Utf8 coding. Setting this option converts all fields of the String type into WideString that allows to work correctly with symbols of almost all languages simultaneously. On the other hand, it causes a delay in working. If the Use Unicode property is enabled, the Charset property will be ignored. The default value is False.


Used to specify the time in seconds before an attempt to make a connection is considered unsuccessful.


Used to specify the version of the Internet Protocol. Ipv4 and Ipv6 are available. The IPBoth option value allows to check for available protocol versions and use the first available automatically.


Used to apply compression on transferring data. Setting this property to True is quite effective on transferring big volumes of data through slow connection. Pay attention that each row is compressed separately. Be careful when setting this option as in some cases it may decrease fetch speed instead of increasing. The default value is False.


Permit interactive_timeout seconds (instead of wait_timeout seconds) of inactivity before closing the connection. The client's session wait_timeout variable is set to the value of the session interactive_timeout variable. The default value is false.

Advanced Settings

Option Description

Allow NULL strings

To retrieve metadata, not all parameters according to MSDN can accept a null value. If NULL, the driver should return an error. But some 3rd-party tools pass NULL to the parameters. These options should be enabled for compatibility with such tools.

Empty strings as NULL

String Types

Sets the string value types returned by the driver as Default, Ansi or Unicode.

  • Default - the driver defines the string types.
  • Ansi - all string types will be returned as SQL_CHAR, SQL_VARCHAR and SLQ_LONGVARCHAR.
  • Unicode - all string types will be returned as SQL_WCHAR, SQL_WVARCHAR and SLQ_WLONGVARCHAR.

The option value should be changed if any third-party tool supports only Ansi string types or Unicode ones.


Enables using local regional settings when converting numbers to string.


Enables using local regional settings when converting dates and times to string.

MySQL ODBC Connection String sample

DRIVER={Devart ODBC Driver for MySQL};User ID=root;Password=root;Data Source=localhost;Database=test

See also:

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