MySQL for Excel 1.2.1 has been released

The MySQL Windows Experience Team is proud to announce the release of MySQL for Excel version 1.2.1.  This is a maintenance release for 1.2.x.

MySQL for Excel is an application plug-in enabling data analysts to very easily access and manipulate MySQL data within Microsoft Excel. It enables you to directly work with a MySQL database from within Microsoft Excel so you can easily do tasks such as:

  • Importing MySQL Data into Excel
  • Exporting Excel data directly into MySQL to a new or existing table
  • Editing MySQL data directly within Excel

 MySQL for Excel is installed using the MySQL Installer for Windows. The MySQL installer comes in 2 versions

  • Full (150 MB) which includes a complete set of MySQL products with their binaries included in the download
  • Web (1.5 MB - a network install) which will just pull MySQL for Excel over the web and install it when run.

You can download MySQL for Excel 1.2.1 from our official Downloads page at http://dev.mysql.com/downloads/windows/excel as a standalone MSI, and it will be available shortly in the MySQL Installer for Windows that can be downloaded from http://dev.mysql.com/downloads/installer/.


MySQL for Excel 1.2.1 introduces the following features: 
  • When MySQL Workbench is not installed, MySQL connections are now automatically created for discovered MySQL services. If MySQL Workbench is later installed, these connections are not migrated over to MySQL Workbench as MySQL Workbench also creates connections for discovered MySQL services.
    • Bug #16238788 - CONNECTIONS FOR FOUND MYSQL SERVICES SHOULD BE AUTOMATICALLY CREATED

Known limitation / requirement:

  • You must uninstall any current installation of MySQL for Excel before performing this upgrade, due to a bug that prevented upgrades from previous versions. This applies to both the standalone MSI and MySQL Installer installation methods, and the fix allows for simpler upgrades in the future.

Also this release contains the following bug fixes:

  • With Microsoft Excel 2013, closing an Excel window containing an open MySQL for Excel plugin did not properly dispose of the link to the plugin, which caused a delay when opening the plugin inside additional Excel windows.
    • Bug #18392674 - SEVERAL CLICKS NEEDED ON THE MYSQL FOR EXCEL RIBBON BUTTON TO START/CLOSE ADD-IN
  • Attempts to upgrade MySQL for Excel would sometimes fail. The Installer would attempt to add Registry keys that were already present from a previous installation. A workaround was to uninstall and then reinstall the plugin
    • Bug #18354533 - MYSQL FOR EXCELL ADDIN 1.2.0 (STAND ALONE) IS NOT ABLE TO UPDATE AN OLD VERSION
  • Executing Export Data while the first data column was not numeric would cause an "AutoPK" column (Automatically create a Primary Key) to be created as the first column in the table. This column was also created if  the user manually selected the Add a Primary Key column radio button. The generated CREATE TABLE statement did not contain the AutoPK column.
    • Bug #18269654 - EXPORT DATA - ERROR ON CHANGING PRIMARY KEY OPTIONS
  • The Export Data operation failed when checking the Exclude Column checkbox for any column. The generated CREATE TABLE query did not show the excluded columns, but the generated INSERT statements did (incorrectly) include them.
    • Bug #18269602 - EXPORT DATA - EXCLUDING COLUMNS CAUSE THE EXPORT DATA TO FAIL
  • The Remove columns that contain no data, otherwise just flag them as "Excluded" option was removed from the Export Data Advanced Options preference panel. Now, the default behavior is to always remove empty columns from the calculations.
    • Bug #18113057 - EXPORT DATA - UNHANDLED EXCEPTION WHEN SELECTING THE WHOLE SPREADSHEEET'S DATA
  • A MySQL database with unique keys would sometimes fail to import, when executing Import MySQL Data.
    • MySQL Bug #71004, Bug #17891357 - ONLY ONE TABLE FROM A DATABASE WON'T IMPORT
  • The creation of named tables did not function in all cases during an import, and could generate an exception.
    • MySQL Bug #70925, Bug #17806468 - IMPORTING TABLES WITH GUID TO EXCEL – EXCEPTION
  • After creating a new stored mapping in the Append Data dialog, the default selection for the Stored Mapping drop-down list was a blank value. The new default is the newly created stored mapping.
    • Bug #17665496 - APPEND DATA - NEW STORED MAPPING NOT APPLIED AFTER CREATION
  • Exporting large table (250,000+ rows) would not function, as MySQL for Excel would disconnect from the MySQL Server before completion. The MySQL for Excel plugin was optimized to help with these use cases, and these changes include:
    • Optimized the way SQL statements are sent to the server, compared to statements sent in version 1.2.0 a 30-35% time improvement was achieved.
    • Optimized the way SQL queries are created for a modified row, by processing the warnings returned by the MySQL server and the overall creation of result text for errors and warnings to optimize processing and reduce the memory usage. On average, a 30-40% time improvement was achieved.
    • Optimized how the Excel data is loaded into the MySqlDataTable object, so now a temporary (and hidden) Excel worksheet is used to prepare the data to be loaded, and then it is loaded after it was preprocessed instead of preprocessing cell-by-cell as it was done before. This preprocessing also eliminates many blank Excel cells. On average, an 80% time improvement was achieved.
    • Added an advanced option to the Export Data dialog to create secondary indexes after all of the data has been inserted. This saves disk I/O for bulk inserts (thousands of rows) since reindexing will not happen every time a row is inserted, but only once at the end of the data insertion. This option is enabled by default.
    • Added an advanced option to the Append Data dialog to temporarily disable unique indexes and foreign keys for the duration of the data insertion. This option is disabled by default, since you must make sure that if unique indexes are present, that the data mapped to that column does not contain duplicate data.
    • Added checks for lost or broken connections before each statement is executed against the database, and will now properly display connection issues back to the user.
    • The global option Wait XX seconds for a database query to execute before timing out is now setting the net_write_timeout and net_read_timeout accordingly. The default value for this option was increased from 30 to 60 seconds.
    • Bug #17577014 - EXPORTING HUGE TABLE (250,000 ROWS) NEVER FINISH (SERVER LOST THE CONNECTION)
  • When performing an Export Data with the "Remove columns that contain no data, otherwise flag them as Excluded" advanced option disabled (unchecked), empty columns were not flagged as "Excluded" if the first row contained data, even when the first row contained header information.
    • Bug #16501338 - EXPORT DATA - EMPTY COLUMNS ARE NOT ALWAYS FLAGGED AS EXCLUDED
  • When mapping a source column to a target column that has a different data type, a visual warning is now displayed as a warning icon with associated text next to it, and the problematic grid column changes to red.
    • Bug #16238994 - APPEND DATA - DISPLAY WARNINGS ON MAPPED COLUMNS WHERE DATATYPE DOESN'T MATCH
  • The table icons were cut off on the Database Objects list when tables were exported to an empty schema on Windows XP environments.
    • Bug #16238484 - TABLE ICON IS CUTOFF ON THE TABLE LIST WHEN TABLE IS EXPORTED TO AN EMPTY SCHEMA
  • When selecting all cells in a spreadsheet, MySQL for Excel attempted to compute if data was present in each cell. Due to the large number of cells, the Excel API component "VSTO" would fail and return a Range.Count property related exception. This check now uses native Excel functions, which are optimized for speed less memory usage.
    • Bug #14362824 - SELECTING A HUGE AMOUNT OF CELLS IN EXCEL FREEZES EXCEL
    • Bug #17349260 - ERROR WHEN SELECTING THE WHOLE SPREADSHEET'S CELLS

You can access the MySQL for Excel documentation at http://dev.mysql.com/doc/en/mysql-for-excel.html.
You can find our team’s blog at http://blogs.oracle.com/MySQLOnWindows.
You can also post questions on our MySQL for Excel forum found at http://forums.mysql.com/list.php?172.
You can follow our videos on our YouTube channel found at http://www.youtube.com/user/MySQLChannel.

Enjoy and thanks for the support!

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