Examples with Column org.h2.table.Column used on opensource projects

Example 76 with Column

use of org.h2.table.Column in project h2database by h2database.

the class TestShell method test.

private void test(final boolean commandLineArgs) throws IOException {
    PipedInputStream testIn = new PipedInputStream();
    PipedOutputStream out = new PipedOutputStream(testIn);
    toolOut = new PrintStream(out, true);
    out = new PipedOutputStream();
    PrintStream testOut = new PrintStream(out, true);
    toolIn = new PipedInputStream(out);
    Task task = new Task() {

        @Override
        public void call() throws Exception {
            try {
                Shell shell = new Shell();
                shell.setIn(toolIn);
                shell.setOut(toolOut);
                shell.setErr(toolOut);
                if (commandLineArgs) {
                    shell.runTool("-url", "jdbc:h2:mem:", "-user", "sa", "-password", "sa");
                } else {
                    shell.runTool();
                }
            } finally {
                toolOut.close();
            }
        }
    };
    task.execute();
    InputStreamReader reader = new InputStreamReader(testIn);
    lineReader = new LineNumberReader(reader);
    read("");
    read("Welcome to H2 Shell");
    read("Exit with");
    if (!commandLineArgs) {
        read("[Enter]");
        testOut.println("jdbc:h2:mem:");
        read("URL");
        testOut.println("");
        read("Driver");
        testOut.println("sa");
        read("User");
        testOut.println("sa");
        read("Password");
    }
    read("Commands are case insensitive");
    read("help or ?");
    read("list");
    read("maxwidth");
    read("autocommit");
    read("history");
    read("quit or exit");
    read("");
    testOut.println("history");
    read("sql> No history");
    testOut.println("1");
    read("sql> Not found");
    testOut.println("select 1 a;");
    read("sql> A");
    read("1");
    read("(1 row,");
    testOut.println("history");
    read("sql> #1: select 1 a");
    read("To re-run a statement, type the number and press and enter");
    testOut.println("1");
    read("sql> select 1 a");
    read("A");
    read("1");
    read("(1 row,");
    testOut.println("select 'x' || space(1000) large, 'y' small;");
    read("sql> LARGE");
    read("x");
    read("(data is partially truncated)");
    read("(1 row,");
    testOut.println("select x, 's' s from system_range(0, 10001);");
    read("sql> X    | S");
    for (int i = 0; i < 10000; i++) {
        read((i + "     ").substring(0, 4) + " | s");
    }
    for (int i = 10000; i <= 10001; i++) {
        read((i + "     ").substring(0, 5) + " | s");
    }
    read("(10002 rows,");
    testOut.println("select error;");
    read("sql> Error:");
    if (read("").startsWith("Column \"ERROR\" not found")) {
        read("");
    }
    testOut.println("create table test(id int primary key, name varchar)\n;");
    read("sql> ...>");
    testOut.println("insert into test values(1, 'Hello');");
    read("sql>");
    testOut.println("select null n, * from test;");
    read("sql> N    | ID | NAME");
    read("null | 1  | Hello");
    read("(1 row,");
    // test history
    for (int i = 0; i < 30; i++) {
        testOut.println("select " + i + " ID from test;");
        read("sql> ID");
        read("" + i);
        read("(1 row,");
    }
    testOut.println("20");
    read("sql> select 10 ID from test");
    read("ID");
    read("10");
    read("(1 row,");
    testOut.println("maxwidth");
    read("sql> Usage: maxwidth <integer value>");
    read("Maximum column width is now 100");
    testOut.println("maxwidth 80");
    read("sql> Maximum column width is now 80");
    testOut.println("autocommit");
    read("sql> Usage: autocommit [true|false]");
    read("Autocommit is now true");
    testOut.println("autocommit false");
    read("sql> Autocommit is now false");
    testOut.println("autocommit true");
    read("sql> Autocommit is now true");
    testOut.println("list");
    read("sql> Result list mode is now on");
    testOut.println("select 1 first, 2 second;");
    read("sql> FIRST : 1");
    read("SECOND: 2");
    read("(1 row, ");
    testOut.println("select x from system_range(1, 3);");
    read("sql> X: 1");
    read("");
    read("X: 2");
    read("");
    read("X: 3");
    read("(3 rows, ");
    testOut.println("select x, 2 as y from system_range(1, 3) where 1 = 0;");
    read("sql> X");
    read("Y");
    read("(0 rows, ");
    testOut.println("list");
    read("sql> Result list mode is now off");
    testOut.println("help");
    read("sql> Commands are case insensitive");
    read("help or ?");
    read("list");
    read("maxwidth");
    read("autocommit");
    read("history");
    read("quit or exit");
    read("");
    testOut.println("exit");
    read("sql>");
    task.get();
}

Example 77 with Column

use of org.h2.table.Column in project h2database by h2database.

the class TestMVTableEngine method testLobCopy.

private void testLobCopy() throws Exception {
    deleteDb(getTestName());
    Connection conn = getConnection(getTestName());
    Statement stat = conn.createStatement();
    stat.execute("create table test(id int primary key, data clob)");
    stat = conn.createStatement();
    stat.execute("insert into test(id, data) values(2, space(300))");
    stat.execute("insert into test(id, data) values(1, space(300))");
    stat.execute("alter table test add column x int");
    if (!config.memory) {
        conn.close();
        conn = getConnection(getTestName());
    }
    stat = conn.createStatement();
    ResultSet rs = stat.executeQuery("select data from test");
    while (rs.next()) {
        rs.getString(1);
    }
    conn.close();
}

Example 78 with Column

use of org.h2.table.Column in project h2database by h2database.

the class TestFuzzOptimizations method testInSelect.

private void testInSelect() {
    Db db = new Db(conn);
    db.execute("CREATE TABLE TEST(A INT, B INT)");
    db.execute("CREATE INDEX IDX ON TEST(A)");
    db.execute("INSERT INTO TEST SELECT X/4, MOD(X, 4) " + "FROM SYSTEM_RANGE(1, 16)");
    db.execute("UPDATE TEST SET A = NULL WHERE A = 0");
    db.execute("UPDATE TEST SET B = NULL WHERE B = 0");
    Random random = new Random();
    long seed = random.nextLong();
    println("seed: " + seed);
    for (int i = 0; i < 100; i++) {
        String column = random.nextBoolean() ? "A" : "B";
        String value = new String[] { "NULL", "0", "A", "B" }[random.nextInt(4)];
        String compare = random.nextBoolean() ? "A" : "B";
        int x = random.nextInt(3);
        String sql1 = "SELECT * FROM TEST T WHERE " + column + "+0 " + "IN(SELECT " + value + " FROM TEST I WHERE I." + compare + "=?) ORDER BY 1, 2";
        String sql2 = "SELECT * FROM TEST T WHERE " + column + " " + "IN(SELECT " + value + " FROM TEST I WHERE I." + compare + "=?) ORDER BY 1, 2";
        List<Map<String, Object>> a = db.prepare(sql1).set(x).query();
        List<Map<String, Object>> b = db.prepare(sql2).set(x).query();
        assertTrue("seed: " + seed + " sql: " + sql1 + " a: " + a + " b: " + b, a.equals(b));
    }
    db.execute("DROP TABLE TEST");
}

Example 79 with Column

use of org.h2.table.Column in project h2database by h2database.

the class TableFilter method getBestPlanItem.

/**
 * Get the best plan item (index, cost) to use use for the current join
 * order.
 *
 * @param s the session
 * @param filters all joined table filters
 * @param filter the current table filter index
 * @param allColumnsSet the set of all columns
 * @return the best plan item
 */
public PlanItem getBestPlanItem(Session s, TableFilter[] filters, int filter, HashSet<Column> allColumnsSet) {
    PlanItem item1 = null;
    SortOrder sortOrder = null;
    if (select != null) {
        sortOrder = select.getSortOrder();
    }
    if (indexConditions.isEmpty()) {
        item1 = new PlanItem();
        item1.setIndex(table.getScanIndex(s, null, filters, filter, sortOrder, allColumnsSet));
        item1.cost = item1.getIndex().getCost(s, null, filters, filter, sortOrder, allColumnsSet);
    }
    int len = table.getColumns().length;
    int[] masks = new int[len];
    for (IndexCondition condition : indexConditions) {
        if (condition.isEvaluatable()) {
            if (condition.isAlwaysFalse()) {
                masks = null;
                break;
            }
            int id = condition.getColumn().getColumnId();
            if (id >= 0) {
                masks[id] |= condition.getMask(indexConditions);
            }
        }
    }
    PlanItem item = table.getBestPlanItem(s, masks, filters, filter, sortOrder, allColumnsSet);
    item.setMasks(masks);
    // The more index conditions, the earlier the table.
    // This is to ensure joins without indexes run quickly:
    // x (x.a=10); y (x.b=y.b) - see issue 113
    item.cost -= item.cost * indexConditions.size() / 100 / (filter + 1);
    if (item1 != null && item1.cost < item.cost) {
        item = item1;
    }
    if (nestedJoin != null) {
        setEvaluatable(true);
        item.setNestedJoinPlan(nestedJoin.getBestPlanItem(s, filters, filter, allColumnsSet));
        // TODO optimizer: calculate cost of a join: should use separate
        // expected row number and lookup cost
        item.cost += item.cost * item.getNestedJoinPlan().cost;
    }
    if (join != null) {
        setEvaluatable(true);
        do {
            filter++;
        } while (filters[filter] != join);
        item.setJoinPlan(join.getBestPlanItem(s, filters, filter, allColumnsSet));
        // TODO optimizer: calculate cost of a join: should use separate
        // expected row number and lookup cost
        item.cost += item.cost * item.getJoinPlan().cost;
    }
    return item;
}

Example 80 with Column

use of org.h2.table.Column in project h2database by h2database.

the class TableFilter method getValue.

@Override
public Value getValue(Column column) {
    if (joinBatch != null) {
        return joinBatch.getValue(joinFilterId, column);
    }
    if (currentSearchRow == null) {
        return null;
    }
    int columnId = column.getColumnId();
    if (columnId == -1) {
        return ValueLong.get(currentSearchRow.getKey());
    }
    if (current == null) {
        Value v = currentSearchRow.getValue(columnId);
        if (v != null) {
            return v;
        }
        current = cursor.get();
        if (current == null) {
            return ValueNull.INSTANCE;
        }
    }
    return current.getValue(columnId);
}