Details
Description
Right now we are getting exceptions on DB2 if history level none is set and query of process instances with ordering by start time is performed.
to reproduce run org.camunda.bpm.cockpit.plugin.base.ProcessInstanceRestServiceTest#testQueryOrderByStartTime with profile cfghistorynone,db2,db2-105
Hint
statement
<if test="!historyEnabled"> null START_TIME_ </if>
in org/camunda/bpm/cockpit/plugin/base/queries/processInstance.xml
looks very strange.
Possible solution
http://stackoverflow.com/questions/2509233/db2-wont-allow-null-column
customization of null column is done through org.camunda.bpm.engine.impl.db.sql.DbSqlSessionFactory