Examples of java.sql.Statement.execute()

java.sql.Statement.execute()
Executes a supplied SQL statement. This may return multiple ResultSets.
Use the getResultSet or getUpdateCount methods to get the first result and getMoreResults to get any subsequent results. @param sql the SQL statement to execute @return true if the first result is a ResultSet, false if the firstresult is an update count or if there is no result @throws SQLException if an error occurs accessing the database

    private void testAggregate() throws SQLException {
        deleteDb("functions");
        Connection conn = getConnection("functions");
        Statement stat = conn.createStatement();
        stat.execute("CREATE AGGREGATE MEDIAN FOR \"" + MedianString.class.getName() + "\"");
        stat.execute("CREATE AGGREGATE IF NOT EXISTS MEDIAN FOR \"" + MedianString.class.getName() + "\"");
        ResultSet rs = stat.executeQuery("SELECT MEDIAN(X) FROM SYSTEM_RANGE(1, 9)");
        rs.next();
        assertEquals("5", rs.getString(1));
        conn.close();

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            if (sql.indexOf("MEDIAN") >= 0) {
                found = true;
            }
        }
        assertTrue(found);
        stat.execute("DROP AGGREGATE MEDIAN");
        stat.execute("DROP AGGREGATE IF EXISTS MEDIAN");
        conn.close();
    }


    private void testFunctions() throws SQLException {

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                found = true;
            }
        }
        assertTrue(found);
        stat.execute("DROP AGGREGATE MEDIAN");
        stat.execute("DROP AGGREGATE IF EXISTS MEDIAN");
        conn.close();
    }


    private void testFunctions() throws SQLException {
        deleteDb("functions");

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        Statement stat = conn.createStatement();
        assertCallResult(null, stat, "abs(null)");
        assertCallResult("1", stat, "abs(1)");
        assertCallResult("1", stat, "abs(1)");


        stat.execute("CREATE TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR)");
        stat.execute("CREATE ALIAS ADD_ROW FOR \"" + getClass().getName() + ".addRow\"");
        ResultSet rs;
        rs = stat.executeQuery("CALL ADD_ROW(1, 'Hello')");
        rs.next();
        assertEquals(1, rs.getInt(1));

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        assertCallResult(null, stat, "abs(null)");
        assertCallResult("1", stat, "abs(1)");
        assertCallResult("1", stat, "abs(1)");


        stat.execute("CREATE TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR)");
        stat.execute("CREATE ALIAS ADD_ROW FOR \"" + getClass().getName() + ".addRow\"");
        ResultSet rs;
        rs = stat.executeQuery("CALL ADD_ROW(1, 'Hello')");
        rs.next();
        assertEquals(1, rs.getInt(1));
        rs = stat.executeQuery("SELECT * FROM TEST");

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        assertEquals("VARCHAR", rs.getString("TYPE_NAME"));
        assertFalse(rs.next());


        stat.executeQuery("CALL ADD_ROW(2, 'World')");


        stat.execute("CREATE ALIAS SELECT_F FOR \"" + getClass().getName() + ".select\"");
        rs = stat.executeQuery("CALL SELECT_F('SELECT * FROM TEST ORDER BY ID')");
        assertEquals(2, rs.getMetaData().getColumnCount());
        rs.next();
        assertEquals(1, rs.getInt(1));
        assertEquals("Hello", rs.getString(2));

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        rs.next();
        assertEquals("((1, Hello), (2, World))", rs.getString(1));
        assertFalse(rs.next());
        assertThrows(ErrorCode.SYNTAX_ERROR_2, stat).
                executeQuery("CALL SELECT_F('ERROR')");
        stat.execute("CREATE ALIAS SIMPLE FOR \"" + getClass().getName() + ".simpleResultSet\"");
        rs = stat.executeQuery("CALL SIMPLE(2, 1, 1, 1, 1, 1, 1, 1)");
        assertEquals(2, rs.getMetaData().getColumnCount());
        rs.next();
        assertEquals(0, rs.getInt(1));
        assertEquals("Hello", rs.getString(2));

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        rs.next();
        assertEquals(0, rs.getInt(1));
        assertEquals("Hello", rs.getString(2));
        assertFalse(rs.next());


        stat.execute("CREATE ALIAS ARRAY FOR \"" + getClass().getName() + ".getArray\"");
        rs = stat.executeQuery("CALL ARRAY()");
        assertEquals(1, rs.getMetaData().getColumnCount());
        rs.next();
        Array a = rs.getArray(1);
        Object[] array = (Object[]) a.getArray();

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        rs2.next();
        assertEquals(2, rs2.getInt(1));
        assertEquals("Hello", rs2.getString(2));
        assertFalse(rs.next());


        stat.execute("CREATE ALIAS ROOT FOR \"" + getClass().getName() + ".root\"");
        rs = stat.executeQuery("CALL ROOT(9)");
        rs.next();
        assertEquals(3, rs.getInt(1));
        assertFalse(rs.next());

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        rs = stat.executeQuery("CALL ROOT(9)");
        rs.next();
        assertEquals(3, rs.getInt(1));
        assertFalse(rs.next());


        stat.execute("CREATE ALIAS MAX_ID FOR \"" + getClass().getName() + ".selectMaxId\"");
        rs = stat.executeQuery("CALL MAX_ID()");
        rs.next();
        assertEquals(2, rs.getInt(1));
        assertFalse(rs.next());

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