[jira] [Updated] (CALCITE-1863) Timestamp "<>" operator compares box references instead of values

["Damjan Jovanovic (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-1863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Damjan Jovanovic updated CALCITE-1863:
--------------------------------------
    Summary: Timestamp "<>" operator compares box references instead of values  (was: Timestamp is different from itself in WHERE)

> Timestamp "<>" operator compares box references instead of values
> -----------------------------------------------------------------
>
>                 Key: CALCITE-1863
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1863
>             Project: Calcite
>          Issue Type: Bug
>    Affects Versions: 1.12.0, 1.13.0
>            Reporter: Damjan Jovanovic
>            Assignee: Julian Hyde
>
> In MySQL:
> USE db;
> CREATE TABLE test(id INTEGER NOT NULL PRIMARY KEY, dt datetime NOT NULL);
> INSERT INTO test values (1, '2017-06-29 09:00:00');
> Then connect to it twice, and full outer join on the primary key where the timestamp is different:
> {code}
> Connection connection = DriverManager.getConnection("jdbc:calcite:", info);
> CalciteConnection calciteConnection = connection.unwrap(CalciteConnection.class);
> SchemaPlus rootSchema = calciteConnection.getRootSchema();
> JdbcSchema a = JdbcSchema.create(calciteConnection.getRootSchema(),
>                     "A", aDataSource, null, "db");
> rootSchema.add("A", a);
> JdbcSchema b = JdbcSchema.create(calciteConnection.getRootSchema(),
>                     "B", bDataSource, null, "db");
> rootSchema.add("B", b);
> PreparedStatement st = connection.prepareStatement(
>                     "SELECT * FROM A.test AS a FULL OUTER JOIN B.test AS b " +
>                     "ON a.id=b.id " +
>                     "WHERE a.dt <> b.dt");
> ResultSet results = st.executeQuery();
> {code}
> results now contains that row joined to itself, since the "dt" in WHERE tested as not equal to itself.



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