Examples of org.apache.derbyTesting.junit.RuntimeStatisticsParser.usedTableScan()

Class org.apache.derbyTesting.junit.RuntimeStatisticsParser

Examples of org.apache.derbyTesting.junit.RuntimeStatisticsParser.usedTableScan()

org.apache.derbyTesting.junit.RuntimeStatisticsParser.usedTableScan()
Return whether or not a Table Scan result set was used in the query.

                { "4", "-8", "4", "4" }, { "4", "-8", "4", "16" },
                { "4", "8", "4", "4" }, { "4", "8", "4", "16" } };


        JDBC.assertFullResultSet(rs, expRS, true);
        p = SQLUtilities.getRuntimeStatisticsParser(st);
        assertTrue("Expected table scan", p.usedTableScan());
        assertTrue("Expected hash join", p.usedHashJoin());




        rs = st
                .executeQuery("select * from (select * from t1 union all select * "

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                { "3", "6", "3", "12" }, { "4", "-8", "4", "4" },
                { "4", "-8", "4", "16" } };


        JDBC.assertFullResultSet(rs, expRS, true);
        p = SQLUtilities.getRuntimeStatisticsParser(st);
        assertTrue("Expected table scan", p.usedTableScan());
        assertTrue("Expected hash join", p.usedHashJoin());


        rs = st
                .executeQuery("select * from (select * from t1 union select * from "
                        + "t2) x1, (select * from t3 union all select * from "

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                { "4", "-8", "4", "4" }, { "4", "-8", "4", "16" },
                { "4", "8", "4", "4" }, { "4", "8", "4", "16" } };


        JDBC.assertFullResultSet(rs, expRS, true);
        p = SQLUtilities.getRuntimeStatisticsParser(st);
        assertTrue("Expected table scan", p.usedTableScan());
        assertTrue("Expected hash join", p.usedHashJoin());




        rs = st
                .executeQuery("select * from (select * from t1 union all select * "

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                { "3", "6", "3", "12" }, { "4", "-8", "4", "4" },
                { "4", "-8", "4", "16" } };


        JDBC.assertFullResultSet(rs, expRS, true);
        p = SQLUtilities.getRuntimeStatisticsParser(st);
        assertTrue("Expected table scan", p.usedTableScan());
        assertTrue("Expected hash join", p.usedHashJoin());


        // Next set of queries tests pushdown of predicates whose
        // column references do not reference base tables--ex. they
        // reference literals, aggregates, or subqueries. We don't

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        expRS = new String[][] { { "404" } };


        JDBC.assertFullResultSet(rs, expRS, true);
        
        p = SQLUtilities.getRuntimeStatisticsParser(st);  
        assertTrue("Expected table scan on T3", p.usedTableScan("T3"));
        assertTrue("Expected table scan on T4", p.usedTableScan("T4"));
      
        rs = st.executeQuery("select count(*) from V1, V2 where V1.j > 0");


        expColNames = new String[] { "1" };

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        JDBC.assertFullResultSet(rs, expRS, true);
        
        p = SQLUtilities.getRuntimeStatisticsParser(st);  
        assertTrue("Expected table scan on T3", p.usedTableScan("T3"));
        assertTrue("Expected table scan on T4", p.usedTableScan("T4"));
      
        rs = st.executeQuery("select count(*) from V1, V2 where V1.j > 0");


        expColNames = new String[] { "1" };
        JDBC.assertColumnNames(rs, expColNames);

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        expRS = new String[][] { { "505" } };


        JDBC.assertFullResultSet(rs, expRS, true);
     
        p = SQLUtilities.getRuntimeStatisticsParser(st);  
        assertTrue("Expected table scan on T3", p.usedTableScan("T3"));
        assertTrue("Expected table scan on T4", p.usedTableScan("T4"));
      
        // Combination of join predicate and non-join predicate:
        // the join predicate should be pushed to V2 (T3 and T4),
        // the non-join predicate should operate as usual.

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        JDBC.assertFullResultSet(rs, expRS, true);
     
        p = SQLUtilities.getRuntimeStatisticsParser(st);  
        assertTrue("Expected table scan on T3", p.usedTableScan("T3"));
        assertTrue("Expected table scan on T4", p.usedTableScan("T4"));
      
        // Combination of join predicate and non-join predicate:
        // the join predicate should be pushed to V2 (T3 and T4),
        // the non-join predicate should operate as usual.

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                { "3", "6", "3", "3" }, { "4", "-8", "4", "4" },
                { "4", "8", "4", "4" } };


        JDBC.assertFullResultSet(rs, expRS, true);
        p = SQLUtilities.getRuntimeStatisticsParser(st);
        assertTrue("Expected Table Scan ResultSet for T1", p.usedTableScan("T1"));
        assertTrue("Expected Table Scan ResultSet for T2", p.usedTableScan("T2"));
        
        // UNION
        // ALL should behave just like normal UNION. I.e.
        // predicates should still be pushed to T3 and T4.

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                { "4", "8", "4", "4" } };


        JDBC.assertFullResultSet(rs, expRS, true);
        p = SQLUtilities.getRuntimeStatisticsParser(st);
        assertTrue("Expected Table Scan ResultSet for T1", p.usedTableScan("T1"));
        assertTrue("Expected Table Scan ResultSet for T2", p.usedTableScan("T2"));
        
        // UNION
        // ALL should behave just like normal UNION. I.e.
        // predicates should still be pushed to T3 and T4.

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