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MySQL Connector/NET 8.0.22 has been released
Posted by: Surabhi Bhat
Date: October 19, 2020 10:16AM

Dear MySQL users,

MySQL Connector/NET 8.0.22 is the latest General Availability release of
the MySQL Connector/NET 8.0 series. This version supports .NET 5.0
and the X DevAPI, which enables application developers to write code
that combines the strengths of the relational and document models using
a modern, NoSQL-like syntax that does not assume previous experience
writing traditional SQL.

To learn more about how to write applications using the X DevAPI, see For more
information about how the X DevAPI is implemented in Connector/NET, see
NuGet packages provide functionality at a project level. To get the
full set of features available in Connector/NET such as availability
in the GAC, integration with Visual Studio's Entity Framework Designer
and integration with MySQL for Visual Studio, installation through
the MySQL Installer or the stand-alone MSI is required.

Please note that the X DevAPI requires at least MySQL Server version
8.0 or higher with the X Plugin enabled. For general documentation
about how to get started using MySQL as a document store, see

To download MySQL Connector/NET 8.0.22, see

Installation instructions can be found at

Changes in MySQL Connector/NET 8.0.22 (2020-10-19, General Availability)

     * Functionality Added or Changed

     * Bugs Fixed

Functionality Added or Changed

     * Revisions to the MySql.Data.EntityFrameworkCore namespace
       reduced the number of public classes. (Bug #31353208)

     * The following synonyms for the Server connection string
       option are deprecated in this release: address, addr, and
       network address. (Bug #31248601)

     * Previously, the client-side mysql_clear_password
       authentication plugin was not supported. Now, it is
       permitted to send passwords without hashing or encryption
       by using mysql_clear_password on the client side together
       with any server-side plugin that needs a clear text
       password, such as for LDAP pluggable authentication.
       Connector/NET returns an error if the
       mysql_clear_password plugin is requested, but the
       connection is neither encrypted nor using Unix domain
       sockets. For usage information, see Client-Side Cleartext
       Pluggable Authentication
       ( ). 
       (Bug #30340510)

     * For enhanced security of the existing
       AllowLoadLocalInfile connection string option, a single
       folder that is safe to upload files from now can be
       specified with the new AllowLoadLocalInfileInPath option
       (see Options for Classic MySQL Protocol Only
       ( )).

     * Connector/NET now supports Entity Framework 6.4, which
       extends the compatibility of the provider to include the
       Linux and macOS platforms when used with the Universal
       Windows Platform (UWP) .NET implementation (see Entity
       Framework 6 Support
       ( )). 
       Connector/NET continues to support the .NET Framework 
       implementation of Entity Framework.

     * Connections made using the MySQL Enterprise Edition SASL
       LDAP authentication plugin now are supported on Windows
       and Linux, but not on macOS. Connector/NET implements the
       SCRAM-SHA-1 authentication method of the SASL
       authentication protocol.

     * The new compression-algorithms connection option sets the
       order by which supported algorithms are negotiated and
       selected to send compressed data over X Protocol
       connections (see Options for X Protocol Only
       ( )).

     * In addition to providing continued support for .NET Core
       and .NET Framework, Connector/NET now includes support
       for the new .NET 5.0 framework. Compatibility testing was
       performed with the preview versions of .NET 5.0 and
       Visual Studio to encourage the efforts of early adopters.
       Among other capabilities, .NET 5.0 offers uniform runtime
       behaviors and developer experiences by taking the best of
       .NET Core, .NET Framework, Xamarin, and Mono.

Bugs Fixed

     * Procedure names were malformed before being sent to the
       server when the database name was not specified in the
       connection string. (Bug #31669587, Bug #100306)

     * Microseconds were deserialized incorrectly when
       MySqlCommand.Prepare() was called for a statement that
       selects a TIME(n) column, resulting in a loss of trailing
       zeros in the returned result. Now, the MySqlTime class
       calculates ticks, rather than converting the microseconds
       to a string. (Bug #31623730, Bug #100218)

     * MySqlConnection.GetSchema("Procedures") returned the
       literal string System.Byte[] as the value of the
       ROUTINE_DEFINITION column, rather than the actual routine
       definition. (Bug #31622907, Bug #100208)

     * Valid query parameters of type DateTime were
       misinterpreted as a string values. (Bug #31598178, Bug

     * A mismatch of data types between the parameter of a
       stored procedure and the corresponding MySqlParameter
       when the Prepare() method was called did not generate an
       exception. (Bug #31458774, Bug #99793)

     * An SQL syntax error was reported on valid code for
       creating a dynamic dropdown list from data in an ASP.NET
       Core application. (Bug #31337609, Bug #99523)

     * Entity Framework code-first migration omitted the schema
       attribute that was assigned to an entity, although the
       automatic migration appeared to generate a table with the
       proper schema value at first. Subsequent queries using
       the schema name returned errors. (Bug #31323788, Bug

     * The mapping from the TINYINT and BIT data types to
       BOOLEAN was not performed as expected when scaffolding
       was used. (Bug #31304070, Bug #99419)

     * The Entity Framework Core migration script replaced NULL
       with NOT NULL on a column in the migrated table when the
       MaxLength attribute of the property for it was changed in
       the model. (Bug #31070175, Bug #96913)

     * The Ubiety.Dns.Core.dll binary included with the
       MySQL.Data NuGet package was built in debug mode, which
       prevented the publishing of applications to Microsoft
       Store. (Bug #31061034, Bug #98955)

     * An application using Entity Framework code-first
       migration without the default system decimal separator,
       the period character (.), could not generate a new
       database. Now, setting the system decimal separator to a
       different character is permitted. (Bug #30965702, Bug

     * Every column of type CHAR(36) was interpreted as a GUID,
       which could cause the first query made by a restarted
       application using the MySQL.Data package to return an
       exception. This fix introduces a dedicated format
       (8-4-4-4-12) to interpret the column type properly. (Bug
       #29963760, Bug #93399)

     * Connector/NET code did not read from the
       MySql.Data.Properties.ReservedWords.txt assembly resource
       consistently and could return an incomplete set of
       reserved keywords. (Bug #27536342, Bug #89639)

     * No error occurred when MySqlCommand.CommandTimeout was
       set to a negative number, however, subsequently setting
       it to a positive number returned an exception. (Bug
       #26574860, Bug #87316)

     * The TcpClient implementation limited some of the
       connection options when an external wrapper from a
       Windows Forms application made the connection. This fix
       enables the related external destructor to be called
       without returning an error. (Bug #26427802, Bug #82810)

     * An exception was returned in debug mode after a command
       was canceled within a connection that was not null when
       CancelQuery was called. Thanks to Denis Yarkovoy for the
       improved validation patch. (Bug #26362494, Bug #86836)

     * The DbContext.Database.Migrate() method did not succeed
       because the __efmigrationshistory table was not found.
       This fix modifies the method that validates the existence
       of the table. (Bug #25901276, Bug #85902)

     * When a parameter value of zero was passed to the
       MySqlParameter constructor, Connector/NET used the
       MySqlDbType enumeration by default for type mapping and
       changed the value to NULL. This fix maps the default type
       to int32. (Bug #25573071, Bug #85027)

     * Entity Framework code-first migration excluded the length
       specifier in the resulting binary columns. (Bug
       #23171349, Bug #81179)

     * Create Table statements generated with Entity Framework
       were missing some of the semicolons, which caused MySQL
       Server to return errors. (Bug #22669961, Bug #80159)

On Behalf of MySQL Release Engineering Team,
Surabhi Bhat

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MySQL Connector/NET 8.0.22 has been released
October 19, 2020 10:16AM

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