dbExpress Driver for MySQL Revision History

8.4.0 06-Apr-26

Added support for RAD Studio 13 Florence Release 1
Added support for MySQL 9.6
Fixed a bug with executing SHOW COLUMNS for MySQL 4.11.x when UseUnicode = True

8.3.0 22-Sep-25

Added support for RAD Studio 13 Florence
Added support for MariaDB 12
Added support for the Vector data type
Added support for the UUID data type in MariaDB 10.7 and later
Added support for the INET4 and INET6 data types in MariaDB 10.10 and later
Fixed a bug with retrieving the auto-increment value in Delphi 7
Resolved a "Key violation" error that occurred when working with a master/detail relationship

8.2.0 25-Mar-25

Added support for RAD Studio 12 Athens Release 3
Added support for the RAD Studio 64-bit IDE
Added support for MySQL 9
Fixed an issue with handling stored procedures when SELECT privileges were not granted

8.1.2 31-Oct-24

Added support for RAD Studio 12 Athens Release 2

8.1.1 09-May-24

Added support for RAD Studio 12 Athens Release 1
Fixed bug with incorrect executing of internal Rollback
Fixed bug with executing the queries with parameters

8.1.0 15-Nov-23

Added support for RAD Studio 12
Added support for MariaDB 11
Added support for macOS Sonoma
Fixed bug that prevented functioning when ONLY_FULL_GROUP_BY SQL mode is disabled

8.0.3 29-Mar-23

Added support for RAD Studio 11 Alexandria Release 3
Fixed bug with BLOBs for MySQL version below 4.1
Fixed bug with BIGINT UNSIGNED key fields in version 4.1 or higher

8.0.2 26-Sep-22

Added support for RAD Studio 11 Alexandria Release 2

8.0.1 16-Sep-21

RAD Studio 11 Alexandria is supported
macOS ARM target platform is supported

7.2.2 14-Jul-21

Bug with slow data fetching is fixed

7.2.1 09-Jun-20

RAD Studio 10.4 Sydney is supported
JSON data type is supported

7.1.2 28-Nov-19

Now Trial edition for macOS and Linux is fully functional

7.0.1 12-Aug-19

macOS 64-bit is supported
Linux 64-bit is supported
Release 2 for RAD Studio 10.3 Rio, Delphi 10.3 Rio, and C++Builder 10.3 Rio is now required

6.11.15 12-Dec-18

RAD Studio 10.3 Rio is supported

6.10.14 03-Sep-18

MySQL 8 is supported
Support for sha2_password, caching_sha2_password authentications is added

6.9.13 18-Apr-17

RAD Studio 10.2 Tokyo is supported

6.8.12 26-Oct-16

The NullForZeroDelphiDate option to hide the "30-12-1899" dates is added
Bug with the "Incorrect parameter count" error is fixed
Bug with the "Invalid field type" error is fixed
Bug with incorrect field size is fixed

6.8.11 28-Apr-16

RAD Studio 10.1 Berlin is supported
Support for utf8mb4 charset is added

6.7.10 17-Feb-16

Bug with AV on calling TSQLDataSet.Close is fixed

6.7.9 10-Sep-15

RAD Studio 10 Seattle is supported
Now Trial for Win64 is a fully functional Standard Edition

6.6.8 17-Apr-15

RAD Studio XE8 is supported
Bug with TWideMemoField data size is fixed
Bug with setting the IPVersion connection parameter is fixed

6.5.7 19-Sep-14

RAD Studio XE7 is supported

6.4.6 28-May-14

RAD Studio XE6 is supported
The TrimVarChar connection parameter is added

6.3.5 21-Feb-14

RAD Studio XE5 Update 2 is now required
Bug with mapping to BCD fields when using TClientDataSet is fixed
Bug on sorting BLOB fields is fixed

6.3.4 21-Oct-13

Rad Studio XE5 is supported
IPv6 protocol support is added
Bug with incorrect mapping of decimal fields is fixed
Bug with processing large FmtBCD fields is fixed
Bug with opening a table with timestamp fields when Charset is set to 'UTF8' is fixed

6.2.3 17-May-13

Rad Studio XE4 is supported
Assembly registration without .NET SDK installed is improved
The 'Unexpected data type 25' error in Delphi 2007 is fixed
Bug with compilation on C++Builder is fixed

6.1.2 25-Dec-12

Rad Studio XE3 Update 1 is now required
C++Builder 64-bit for Windows is supported
Support for interactive connections is added
Bug with using temporary tables is fixed

6.0.1 10-Sep-12

Rad Studio XE3 is supported
Windows 8 is supported
Data Explorer is supported
dbExpress 4 metadata is supported
Bug with AV failure when processing a prepared query at connection loss is fixed

5.1.3 20-Mar-12

Update 4 for RAD Studio XE2, Delphi XE2, and C++Builder XE2 is now required
SSL secure connection support is added

5.1.2 16-Dec-11

Update 2 for RAD Studio XE2, Delphi XE2, and C++Builder XE2 is now required
Mac OS X in RAD Studio XE2 is supported

5.0.1 15-Sep-11

Embarcadero RAD Studio XE2 is supported
Application development for 64-bit Windows is supported
FireMonkey application development platform is supported
dclcrdbxXXX.dcp is added to installation
Bug with processing OUT parameters is fixed
Bug with detection of original field name for query with aliases is fixed

4.70.29 16-May-11

Bug with the "BAD HANDSHAKE" error on connecting to some versions of MySQL is fixed

4.70.28 03-Mar-11

Now the DBXERR_INVALIDUSRPASS error code is returned on connection establishing with invalid user name or password
Fixed several bugs with installation of dbExpress Driver on different IDEs
Fixed bug with setting the Compress mode
Fixed bug with processing parameters when charset is 'gbk'

4.70.27 07-Dec-10

Fixed bug with rollback transaction after failed commit
Fixed bug with starting transaction on MySQL 3.x

4.70.26 06-Oct-10

Embarcadero RAD Studio XE supported
Fixed bug with processing string fields when East code page is used

4.50.23 02-Jul-10

Optimized getting of stored procedures list
Fixed bug with fields length for SHOW statements

4.50.22 25-Mar-10

Fixed bug with processing LargeInt fields and parameters
Fixed bug with processing transation when connection is lost

4.50.21 07-Dec-09

Added support for dbMonitor 3

4.50.20 09-Oct-09

Fixed bug with fetching BLOB data for Delphi 2010
Fixed bug with setting Charset connection parameter

4.50.19 23-Sep-09

Embarcadero RAD Studio 2010 supported
Fixed several bugs related to using the driver with Datasnap componets

4.40.18 04-Sep-09

Fixed bug with memory leak on loading data
Fixed bug with setting default values when the JOIN statement is used

4.40.16 10-Jun-09

Fixed bug with buffer overflow on getting value for TWideStringField
Fixed exception on disconnect caused by DBMonitor check
Avoided bug of some versions of MySQL with fields length for SHOW SLAVE STATUS statement

4.40.15 27-Mar-09

UseQuoteChar option now works for Delphi 2007 and higher
Fixed bug with calculating fields length for TWideStringField

4.40.14 20-Jan-09

Added driver compiled with Delphi 2007 for using under Windows 98
Fixed bug with buffer overflow on getting value for TStringField
Fixed bug with calling stored procedures from MySQL server in the case sensitive mode

4.40.13 12-Dec-08

Fixed bug with opening tables from different databases
Fixed bug with executing stored procedures with output parameters

4.40.12 26-Nov-08

Added feature to set the 'Params' option for MySQL Embedded server
Added support new DATE field type for MySQL server 5.0.54 and older
Fixed bug with opening tables from different databases
Fixed bug with starting transaction on MySQL 4.0 and lower
Fixed bug with specifying database name on setting Default values
Fixed bug with AV failure on close application when Embedded server is used
Fixed Assert with executing StoredProcedure when exist param name equal to 'STATUS'
Avoided bug of some versions of MySQL with fields length for SHOW PROCESSLIST statement
Avoided bug of some versions of MySQL with fields length for SHOW SLAVE STATUS statement

4.40.11 16-Oct-08

Added full Unicode support for RAD Studio 2009

4.40.10 04-Sep-08

Support for Delphi 2009 and C++Builder 2009 added

4.20.8 27-May-08

Fixed bug with BCD overflow for BIGINT(x) data type
Fixed bug with freezing when executing some SQL queries
Fixed bug with AV failure when trying to execute queries on a broken connection
Fixed bug with calculating fields length for the SHOW CREATE TABLE statement
Avoided bug of MySQL 5.0.51 with fields length for SHOW ENGINES statement

4.20.7 07-Mar-08

Fixed bug with infinite reconnect
Fixed access violation with multiple database connections from an application
Fixed bug with truncation of fractional part of BCD values in dbExpress 4

4.20.6 05-Feb-08

Improved stability of working with MySQL Embedded server
Fixed bug with memory leak in FetchAll=False mode
Fixed bug with fetching BLOB data when using MySQL client library
Fixed bug with handling precision of decimal values with MySQL 4.x

4.20.5 12-Dec-07

Added the DbxMdaDriverLoader unit in DbxMda Source Code edition to enable embedding the driver into applications
Added support for opening TSQLDataSet with DbxCommandType = DbxMetaData
Memory leak in the driver fixed
Fixed bug with executing stored procedures with output parameters

4.20.4 29-Oct-07

Several bugs in installation fixed

4.20.3 10-Oct-07

CodeGear RAD Studio 2007 supported
Fixed bug with retrieving metadata in Delphi 2007
Fixed bug with executing functions with input parameters

4.00.2 12-Jul-07

Complete support for dbExpress version 4 in Delphi 2007 for Win32 and C++Builder 2007 added
General performance improved
Added support for data compression
Added support for different network protocols

3.20.5 04-May-07

Added limited support for Delphi 2007 for Win32
Fixed bug with unclosed sockets under Linux

3.10.4 04-Sep-06

Added support for Turbo Delphi, Turbo Delphi for .NET and Turbo C++
Additional option Charset for TSQLConnection available

3.00.3 07-Aug-06

Fixed bug with committing transactions in FetchAll=False mode

3.00.2 26-Apr-06

Fixed bug with "Lost connection" on executing time-consumig queries
Fixed bug with getting declaration of ENUM fields on EXPLAIN statements for MySQL 4.1 and older

3.00.1 02-Feb-06

Delphi 2006 supported
Unicode support with coUseUnicode added (Delphi 2006)
Fixed bug with fetching decimal fields
Fixed bug with MetaData.getIndices and Delphi 7.1
Fixed 'Unknown field type' bug with MySQL 5.0

2.60.8 20-Oct-05

Fixed bug with LOAD INTO statements

2.60.7 16-Sep-05

FAQ added
Additional option Prepared for TSQLConnection available (MySQL >= 4.1)
Support for ServerCharSet option added (MySQL >= 4.1)
Support for StoredProc added (MySQL >= 5.0)
DECIMAL column type in MySQL 5.0 support added

2.50.6 07-Jun-05

Fixed bug with range-checking error on describe fields in Direct mode
Fixed bug with DESC <Table>

2.50.5 04-May-05

MySQL 5.0.3 BIT type support added
Fixed bug with exception type, raised on transaction operation fail

2.50.4 29-Mar-05

Support for coUseQuoteChar added
Support for coEnableBoolean added
Fixed bug with performance in Direct mode
"Lost connection" bug fixed
"SELECT Null" bug fixed

2.50.3 27-Jan-05

Support for Delphi 2005 added

2.10.2 22-Dec-04

Fixed bug with connection loss on long queries
Fixed bug with range-checking on describing fields
Fixed bug with SHOW FULL PROCESSLIST
Fixed bug with Embedded Server Demo

2.10 11-Nov-04

"Lost connection" error processing improved
New time trial limitation
Fixed bug with editing blob fields > 16Mb
Fixed bug with Embedded server
Fixed bug with editing autoincrement fields

2.00 14-May-04

Delphi8 support added
MySQL server 5.0 support added
Embedded Server Demo added
Fixed bug with Embedded Server (4249)
ISQLCursor.isNullable, ISQLCursor.isAutoIncrement support added (4351)
Fixed bug with Nullable fields on Delphi8 (DbxSda4163)

1.53 26-Jan-04

Limited MySQL server 4.1.1 support added
Autostop normal server on start embedded added
if libmysql.dll not found then raise EOSError (instead of Exception)
Fixed bug with empty string values in Direct mode (3730)
Fixed bug with datadir checking on embedded server start
Fixed bug with large ID values for Direct mode
Fixed bug with empty string values in Direct mode (M3730)
Fixed bug in SQLMonitor with Date and Time parameters

1.52 01-Dec-03

Support for "Host:Port" syntax added
Support for eConnTxnIsoLevel added
Fixed AV-bug with UNSIGNED INT fields (3696)

1.51 13-Oct-03

Direct mode performance improved
SQLConnection.Params['TRIM CHAR'] support added

1.50 12-Sep-03

Support for Embedded Server added
Support for direct connection (w/o libmysql.dll) added using DirectMySQLObjects by Cristian Nicola
Fixed bug with TCRConnection for CBuilder

1.03 12-Jun-03

MySQL server 4.1 limited support added
Fixed bug with calculating affected rows count
Fixed bug with field mapping BIGINT fields with small length (TFMTDBCField -> TBCDField)
Fixed bug with getIndicies and DBMonitor

1.02 12-May-03

Additional option TrimFixedChar to TSQLConnection available
Fixed bug with updating table without key fileds (2996)
Search algorithm for 'libmysqlclient.so' under Linux improved

1.01 23-Apr-03

'Server Port' property added under Delphi 7
Bug with multiple Execute fixed

1.00 13-Feb-03

Initial release of the driver