I am trying to connect LibreOffice Base with an MySQL database, in phpMyAdmin, with a JDBC-connection.
The first step is to select which database you want to select:
The second step is to select which connection:
The third step is to select your database:
When I press 'Klasse testen' ( Test Class ), I get the following error: 'com.mysql.jdbc.driver cannot be loaded'.
Does anyone know how to avoid this error?
You need to download and "register" the JDBC connector first. To do so:
Go to http://dev.mysql.com/downloads/connector/j/ and download the ZIP archive with the JDBC connector ("Platform-Independent"); you may alternatively download the MSI installer; in this case, the jar file can be found in Program Files (x86)/MySQL/MySQL Connector J/ (assuming a Win 7 64bit system)
Unzip the archive on your local PC (remember the path to its contents), or alternatively install the MSI file;
In the extracted folder structure, there's a file "mysql-connector-java-5.0.8-bin.jar" (name depends on the exact version you've downloaded)
Run LibreOffice (not Base, just LO);
Open Menu Tools -> Options -> LibreOffice -> Advanced -> Class Path;
Click Add Archive;
Select the jar file from step 1-3 and hit OK. Now, the Class Pathdialog should look as follows:
That's it. Now, LO knows where to look for the MySQL JDBC Driver.
After following the above instructions and successfully connecting to the desired MySQL database, I discovered that tables containing 0000-00-00 00:00:00 in a DateTime field generated the error 'Value 0000-00-00 00:00:00' can not be loaded as java.sql.Timestamp. Finding references to "zeroDateTimeBehavior=convertToNull" as the solution was easy; the tricky part was where to enter this in LibreOffice. The quick answer: Enter it as part of the Database name field - so 'mydatabase' would become 'mydatabase?zeroDateTimeBehavior=convertToNull'. Running under Linux Mint / Ubuntu with a localhost server, this worked wonders. Happy data crunching!
If you're using Red Hat like linux distros like Fedora, you can install it from the repositories with yum or dnf and then:
In Base goto Tools/Options/Java, click Classpath and select /usr/share/java/mysql-connector-java.jar in the file browser.
https://fedoraproject.org/wiki/QA:Testcase_MySQL_or_MariaDB_in_libreoffice-base
BTW, for Mariadb everything else is the same, but the jdbc driver class changes to this:
org.mariadb.jdbc.Driver