About GROUP BY

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Tutorial
2

Step 3: Add a Context Listener Class

The Guest entity objects will be stored in an ObjectDB database, which will be represented by ... if not exists yet) when the web application starts, by instantiating an EntityManagerFactory. The database will be closed when the web application stops (or when the web server shuts down), by
Tutorial
2

Step 3: Add a Context Listener Class [2019-01-27]

The Guest entity objects will be stored in an ObjectDB database, which will be represented by ... if not exists yet) when the web application starts, by instantiating an EntityManagerFactory. The database will be closed when the web application stops (or when the web server shuts down), by
Tutorial
2

Step 3: Add a Context Listener Class [2011-02-11]

The Guest entity objects will be stored in an ObjectDB database, which will be represented by ... if not exists yet) when the web application starts, by instantiating an EntityManagerFactory. The database will be closed when the web application stops (or when the web server shuts down), by
Tutorial
2

Step 3: Add a Context Listener Class

The Guest entity objects will be stored in an ObjectDB database, which will be represented by ... if not existing yet) when the web application starts, by instantiating an EntityManagerFactory. The database will be closed when the web application stops (or when the web server shuts down), by
Issue
2

Different behavior for two equal queries

of step 2b retaining only results that satisfy:   like(v$1.name,'%Q%'). Step 3: Group results --------------------- Group the results of step 2by:   $1. [Step 4] Remove duplicates from the groups of step 3. [Step 5] Apply selection and prepare final results. Second query (which fails
JPA Doc
2

getGroupList()

Method javax.persistence.criteria.AbstractQuery List> getGroupList() Return a list of the grouping expressions. Returns empty list if no grouping expressions have been specified. Modifications to the list do not affect the query. Returns: the list of grouping expressions Since: JPA 2.0
JDO Doc
2

setGroup(fetchGroupName)

Method javax.jdo.FetchPlan FetchPlan setGroup(   String fetchGroupName ) Set the active fetch groups to the single named fetch group. Parameters: fetchGroupName - the single fetch group Returns: the FetchPlan Since: JDO 2.0
Forum
2

em.flush(); em.clear(); loosing data and not persisting managed objects

thread "main" [ObjectDB 2.2.3_06] Unexpected exception (Error 990) Generated by Java HotSpot(TM) 64 ... the length of primary keys, but large strings as demonstrated by this test should be avoided ... exception (Error 990) Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_24 (on Linux 2.6.32-71
Forum
2

Error using query with MAX() function

exception (Error 990) Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_24 (on Linux 2.6.32-71.24.1 ... that is supported by Java (i.e. up to 2GB). Your test case demonstrates an ObjectDB bug in ... ) Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_24 (on Linux 2.6.32-71.24.1.el6.x86_64
Forum
2

Eclipse plugin problem (using ObjectDB as a separate bundle)

- is enabled. Hello, Make certain the Group items by category is selected at the bottom of the page ... . Uncheck the "Group items by category" - see nebula-cdtime.png attachement. >>2. http://dist.codehaus.org/groovy/distributions/greclipse/snapshot/e3.6/ Select "Group items by category", then deselect