Examples of org.h2.util.Task.execute()

org.h2.util.Task.execute()
Start the thread. @return this

                    if (k > 0) {
                        x += ",";
                    }
                    x += new String[] { "A", "B", "C" }[random.nextInt(3)];
                }
                db.execute(x + ")");
            }
            for (int j = 0; j < 10; j++) {
                String x = "SELECT ";
                for (int k = 0; k < 3; k++) {
                    if (k > 0) {

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                List<Map<String, Object>> a = db.query(x + "TEST" + group);
                List<Map<String, Object>> b = db.query(x + "TEST_INDEXED" + group);
                assertEquals(a.toString(), b.toString());
                assertTrue(a.equals(b));
            }
            db.execute("DROP TABLE TEST_INDEXED");
        }
        db.execute("DROP TABLE TEST");
    }


}

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                assertEquals(a.toString(), b.toString());
                assertTrue(a.equals(b));
            }
            db.execute("DROP TABLE TEST_INDEXED");
        }
        db.execute("DROP TABLE TEST");
    }


}

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        b in(null, 0) and a in(2, null, null)
        order by 1, 2, 3;
     */
    private void testIn() throws SQLException {
        Db db = new Db(conn);
        db.execute("create table test0(a int, b int, c int)");
        db.execute("create index idx_1 on test0(a)");
        db.execute("create index idx_2 on test0(b, a)");
        db.execute("create table test1(a int, b int, c int)");
        db.execute("insert into test0 select x / 100, mod(x / 10, 10), mod(x, 10) from system_range(0, 999)");
        db.execute("update test0 set a = null where a = 9");

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        order by 1, 2, 3;
     */
    private void testIn() throws SQLException {
        Db db = new Db(conn);
        db.execute("create table test0(a int, b int, c int)");
        db.execute("create index idx_1 on test0(a)");
        db.execute("create index idx_2 on test0(b, a)");
        db.execute("create table test1(a int, b int, c int)");
        db.execute("insert into test0 select x / 100, mod(x / 10, 10), mod(x, 10) from system_range(0, 999)");
        db.execute("update test0 set a = null where a = 9");
        db.execute("update test0 set b = null where b = 9");

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                "select a from test1 where a <? and a not in(" +
                "select c from test1 where b <=10 and a in(" +
                "select a from test1 where b =1 or b =2 and b not in(2))) or c <>a) " +
                "and c in(0, 10) and c in(10, 0, 0) order by 1, 2, 3");
        p.set(1);
        p.execute();


        Random seedGenerator = new Random();
        String[] columns = new String[] { "a", "b", "c" };
        String[] values = new String[] { null, "0", "0", "1", "2", "10", "a", "?" };
        String[] compares = new String[] { "in(", "not in(", "=", "=", ">",

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        for (int i = 0; i < 100; i++) {
            Prepared p = db.prepare("INSERT INTO TEST VALUES(?, ?, ?)");
            p.set(new String[] { null, "0", "1", "2" }[random.nextInt(4)]);
            p.set(new String[] { null, "0", "1", "2" }[random.nextInt(4)]);
            p.set(new String[] { null, "0", "1", "2" }[random.nextInt(4)]);
            p.execute();
        }
        int len = getSize(1000, 3000);
        for (int i = 0; i < len / 10; i++) {
            db.execute("CREATE TABLE TEST_INDEXED AS SELECT * FROM TEST");
            int jLen = 1 + random.nextInt(2);

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                stat2.executeQuery("CALL SLEEP(100)");
                Thread.sleep(10);
                stat2.executeQuery("CALL SLEEP(100)");
            }
        };
        t.execute();
        Thread.sleep(50);
        stat1.execute("SHUTDOWN");
        conn1.close();
        try {
            conn2.close();

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                    }
                }
            }


        };
        task.execute();
        stat.execute("create table test2(id int primary key, name clob)");
        for (int i = 0; i < 1000; i++) {
            stat.execute("delete from test2");
            stat.execute("insert into test2 values(1, space(10000 + " + i + "))");
        }

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                    out.close();
                }
            }
        };
        task1.execute();
        task2.execute();
        Thread.sleep(1000);
        task1.get();
        task2.get();
        conn1.close();
        conn2.close();

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