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[jira] [Created] (CALCITE-2748) UPDATE doesn't work


Alexander Shilov created CALCITE-2748:
-----------------------------------------

             Summary: UPDATE doesn't work
                 Key: CALCITE-2748
                 URL: https://issues.apache.org/jira/browse/CALCITE-2748
             Project: Calcite
          Issue Type: Bug
          Components: avatica, core, jdbc-adapter
    Affects Versions: 1.17.0
            Reporter: Alexander Shilov


I tried to use UPDATE DML statements, but got exception:
{code:java}
java.lang.AssertionError: UPDATE

at org.apache.calcite.adapter.enumerable.EnumerableTableModify.implement(EnumerableTableModify.java:137)
at org.apache.calcite.adapter.enumerable.EnumerableRelImplementor.implementRoot(EnumerableRelImplementor.java:100)
at org.apache.calcite.adapter.enumerable.EnumerableInterpretable.toBindable(EnumerableInterpretable.java:92)
at org.apache.calcite.prepare.CalcitePrepareImpl$CalcitePreparingStmt.implement(CalcitePrepareImpl.java:1238)
at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:332)
at org.apache.calcite.prepare.Prepare.prepareSql(Prepare.java:231)
at org.apache.calcite.prepare.CalcitePrepareImpl.prepare2_(CalcitePrepareImpl.java:772)
at org.apache.calcite.prepare.CalcitePrepareImpl.prepare_(CalcitePrepareImpl.java:636)
at org.apache.calcite.prepare.CalcitePrepareImpl.prepareSql(CalcitePrepareImpl.java:606)
at org.apache.calcite.jdbc.CalciteConnectionImpl.parseQuery(CalciteConnectionImpl.java:229)
at org.apache.calcite.jdbc.CalciteConnectionImpl.prepareStatement_(CalciteConnectionImpl.java:211)
at org.apache.calcite.jdbc.CalciteConnectionImpl.prepareStatement(CalciteConnectionImpl.java:200)
at org.apache.calcite.jdbc.CalciteConnectionImpl.prepareStatement(CalciteConnectionImpl.java:91)
at org.apache.calcite.avatica.AvaticaConnection.prepareStatement(AvaticaConnection.java:175)
...{code}
The reason is that EnumerableTableModify.implement doesn't support UPDATE. 

I've tried to implement it, but it's difficult with ([Collection API|[https://github.com/apache/calcite/blob/02752fe78f817ed317b8873d2f4c7b79bfe8b9b5/core/src/main/java/org/apache/calcite/schema/ModifiableTable.java#L40].] There is no method in Collection, that can handle it, and if you use remove/add methods to simulate update, then updated rows count will be equals to zero.



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