[
https://issues.apache.org/jira/browse/CALCITE-2371?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Haisheng Yuan resolved CALCITE-2371.
------------------------------------
Resolution: Invalid
> how to perform joins in mongodb using model json in calcite
> -----------------------------------------------------------
>
> Key: CALCITE-2371
> URL: https://issues.apache.org/jira/browse/CALCITE-2371
> Project: Calcite
> Issue Type: Task
> Reporter: Subbarao
> Priority: Major
>
> Hi,
> Iam already connected mongodb using json model file in apache calcite.
> but here while executing select * from "tablename" it will be showing
> exceptions.
> instead of that query iam using select _MAP['columnname'] from 'tablename'
> then it will be perfectly executing .But i need to select all the columns
> what is the query.
> Another one is i try to perform sql joins in mongodb but it will be not
> working.how to acheive this task.
> {
> "version": "1.0",
> "defaultSchema": "MONGODATABASE",
> "schemas": [
> {
> "type": "custom",
> "name": "MONGODATABASE",
> "factory": "org.apache.calcite.adapter.mongodb.MongoSchemaFactory",
> "operand": {
> "host": "loaclhost",
> "database": "db"
> }
> }
> ]
> }
>
> java.calss file:
> Connection connection = DriverManager.getConnection(
>
> "jdbc:calcite:model=/home/msubbarao/samplefile2/CalciteWithMongoDb/calcitewithmongo.json",
> info);
> Statement stat = connection.createStatement();
> String sql="select * from table1 c JOIN table2 s on
> c.name=s.name";
> String sql1="selecT cast(_MAP['columnname'] AS INTEGER(20)) from
> \"table\" c ";
> ResultSet rs = stat.executeQuery(sql);
>
> while(rs.next()){
> System.out.println("-->"+rs.getString(1));
> }
>
>
>
>
>
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
