[teiid-issues] [JBoss JIRA] (TEIID-3243) MongoDB: doens't support more than 1 aggregation in SQL

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-3243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins updated TEIID-3243:
----------------------------------
    Assignee: Ramesh Reddy  (was: Steven Hawkins)


I think there was an issue with MongoDB only supporting count(*), so there is only limited support for a general count aggregate.

> MongoDB:  doens't support more than 1 aggregation in SQL
> --------------------------------------------------------
>
>                 Key: TEIID-3243
>                 URL: https://issues.jboss.org/browse/TEIID-3243
>             Project: Teiid
>          Issue Type: Enhancement
>          Components: Misc. Connectors
>    Affects Versions: 8.8
>         Environment: MongoDB with Teiid
>            Reporter: Ivan Chan
>            Assignee: Ramesh Reddy
>
> Got exception if I have more than 1 aggregation in SQL for MongoDB:
> Original SQL 
> SELECT COUNT(MongoNestedDocDS.addresst.age) AS c_0, SUM(MongoNestedDocDS.addres
> st.age) AS c_1 FROM MongoNestedDocDS.addresst LIMIT 1000
> Got exception:
> Caused by: org.teiid.jdbc.TeiidSQLException: TEIID30504 -1880007235: TEIID18024 multiple aggregate symbols are not sup
>         at org.teiid.jdbc.TeiidSQLException.create(TeiidSQLException.java:135)
>         at org.teiid.jdbc.TeiidSQLException.create(TeiidSQLException.java:71)
>         at org.teiid.jdbc.StatementImpl.postReceiveResults(StatementImpl.java:667)
>         at org.teiid.jdbc.StatementImpl.access$100(StatementImpl.java:63)
>         at org.teiid.jdbc.StatementImpl$2.onCompletion(StatementImpl.java:515)
>         at org.teiid.client.util.ResultsFuture.addCompletionListener(ResultsFuture.java:148)
>         at org.teiid.jdbc.StatementImpl.executeSql(StatementImpl.java:511)
>         at org.teiid.jdbc.PreparedStatementImpl.executeQuery(PreparedStatementImpl.java:261)
>         at net.sf.jasperreports.engine.query.JRJdbcQueryExecuter.createDatasource(JRJdbcQueryExecuter.java:233)
> Can we consider to use in memory engine instead if more than 1 aggregation?



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