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    MySQL doesn't support some types of characters (such as emojis) with the utf8 encoding. You need to be on MySQL 5.5+ and force utf8mb4 (everywhere, client and server). You can do this sending the query "SET NAMES utf8mb4". Check this https://goo.gl/3E2qzg

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via Pentaho BI Platform Tracking by David Kincade, 1 year ago
via Pentaho BI Platform Tracking by David Kincade, 2 years ago
via Stack Overflow by Unknown author, 2 years ago
schema name is not specified in the connection setup, however, the DB connection parameters are given once in the application config that gets loaded at start-up so if that was incorrect we would see this error immediately. The schema name is not
via mysql.com by Unknown author, 2 years ago
via Coderanch by Migrated From Jforum.net, 1 year ago
Illegal mix of collations (latin1_swedish_ci,COERCIBLE) and (utf8_general_ci,IMPLICIT) for operation 'UNION' Query being executed when exception was thrown: SELECT r.name, '0' AS role_value FROM jforum_roles r WHERE r.group_id IN (1) UNION SELECT r.name, rv.role_value FROM jforum_roles r, jforum_role_values rv WHERE r.role_id = rv.role_id AND r.group_id IN (1) ORDER BY name
java.sql.SQLException: Query execution was interrupted	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:946)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2985)	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:885)	at com.mysql.jdbc.MysqlIO.nextRow(MysqlIO.java:1360)	at com.mysql.jdbc.MysqlIO.readSingleRowSet(MysqlIO.java:2369)	at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:451)	at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:2076)	at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1451)	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1787)	at com.mysql.jdbc.Connection.execSQL(Connection.java:3256)	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1313)	at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1439)	at org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SimpleSQLReportDataFactory.queryData(SimpleSQLReportDataFactory.java:255)	at org.pentaho.reporting.engine.classic.extensions.datasources.pmd.PmdDataFactory.queryData(PmdDataFactory.java:516)	at org.pentaho.reporting.ui.datasources.pmd.PreviewDialog.showData(PreviewDialog.java:134)	at org.pentaho.reporting.ui.datasources.pmd.PmdDataSourceEditor$PreviewAction.actionPerformed(PmdDataSourceEditor.java:300)	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)	at java.awt.Component.processMouseEvent(Component.java:6216)	at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)	at java.awt.Component.processEvent(Component.java:5981)	at java.awt.Container.processEvent(Container.java:2041)	at java.awt.Component.dispatchEventImpl(Component.java:4583)	at java.awt.Container.dispatchEventImpl(Container.java:2099)	at java.awt.Component.dispatchEvent(Component.java:4413)	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4556)	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4220)	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4150)	at java.awt.Container.dispatchEventImpl(Container.java:2085)	at java.awt.Window.dispatchEventImpl(Window.java:2475)	at java.awt.Component.dispatchEvent(Component.java:4413)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:178)	at java.awt.Dialog$1.run(Dialog.java:1051)	at java.awt.Dialog$3.run(Dialog.java:1103)	at java.security.AccessController.doPrivileged(Native Method)	at java.awt.Dialog.show(Dialog.java:1101)	at java.awt.Component.show(Component.java:1516)	at java.awt.Component.setVisible(Component.java:1468)	at java.awt.Window.setVisible(Window.java:841)	at java.awt.Dialog.setVisible(Dialog.java:991)	at org.pentaho.reporting.ui.datasources.pmd.PmdDataSourceEditor.performConfiguration(PmdDataSourceEditor.java:390)	at org.pentaho.reporting.ui.datasources.pmd.PmdDataSourcePlugin.performEdit(PmdDataSourcePlugin.java:41)	at org.pentaho.reporting.designer.core.actions.report.AddDataFactoryAction.actionPerformed(AddDataFactoryAction.java:60)	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)	at javax.swing.AbstractButton.doClick(AbstractButton.java:357)	at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1225)	at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1266)	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)	at java.awt.Component.processMouseEvent(Component.java:6216)	at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)	at java.awt.Component.processEvent(Component.java:5981)	at java.awt.Container.processEvent(Container.java:2041)	at java.awt.Component.dispatchEventImpl(Component.java:4583)	at java.awt.Container.dispatchEventImpl(Container.java:2099)	at java.awt.Component.dispatchEvent(Component.java:4413)	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4556)	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4220)	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4150)	at java.awt.Container.dispatchEventImpl(Container.java:2085)	at java.awt.Window.dispatchEventImpl(Window.java:2475)	at java.awt.Component.dispatchEvent(Component.java:4413)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)