[jira] [Created] (CALCITE-1863) Timestamp is different from itself in WHERE

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

Damjan Jovanovic created CALCITE-1863:
-----------------------------------------

             Summary: Timestamp is different from itself in WHERE
                 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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