Example usage for java.sql Statement executeQuery

List of usage examples for java.sql Statement executeQuery

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Introduction

In this page you can find the example usage for java.sql Statement executeQuery.

Prototype

ResultSet executeQuery(String sql) throws SQLException;

Source Link

Document

Executes the given SQL statement, which returns a single ResultSet object.

Usage

From source file:ResultSetUpdate.java

public static void main(String args[]) {

    String url;//w  w  w . ja v a2  s .c  o m
    url = "jdbc:odbc:UserDB";

    String user, pass;
    user = "ian";
    pass = "stjklsq";

    Connection con;
    Statement stmt;
    ResultSet rs;

    try {
        con = DriverManager.getConnection(url, user, pass);
        stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
        rs = stmt.executeQuery("SELECT * FROM Users where nick=\"ian\"");

        // Get the resultset ready, update the passwd field, commit
        rs.first();
        rs.updateString("password", "unguessable");
        rs.updateRow();

        rs.close();
        stmt.close();
        con.close();
    } catch (SQLException ex) {
        System.err.println("SQLException: " + ex.getMessage());
    }
}

From source file:TestRegisterDriverApp.java

public static void main(String args[]) {

    try {//  w w  w  .  jav  a  2 s  .  co  m
        DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
    } catch (SQLException e) {
        System.out.println("Oops! Got a SQL error: " + e.getMessage());
        System.exit(1);
    }

    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;
    try {
        conn = DriverManager.getConnection("jdbc:oracle:thin:@dssw2k01:1521:orcl", "scott", "tiger");

        stmt = conn.createStatement();
        rset = stmt.executeQuery("select 'Hello '||USER||'!' result from dual");
        while (rset.next())
            System.out.println(rset.getString(1));
        rset.close();
        rset = null;
        stmt.close();
        stmt = null;
        conn.close();
        conn = null;
    } catch (SQLException e) {
        System.out.println("Darn! A SQL error: " + e.getMessage());
    } finally {
        if (rset != null)
            try {
                rset.close();
            } catch (SQLException ignore) {
            }
        if (stmt != null)
            try {
                stmt.close();
            } catch (SQLException ignore) {
            }
        if (conn != null)
            try {
                conn.close();
            } catch (SQLException ignore) {
            }
    }
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    Connection conn = null;/*from w w  w. ja  va 2 s .com*/
    Statement s = null;
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    conn = DriverManager.getConnection("jdbc:odbc:Driver={SQL Server};" + "Server=.\\SQLEXPRESS;"
            + "Trusted_Connection=yes;" + "Database=myDb");
    s = conn.createStatement();
    s.executeQuery("SELECT * FROM dbo.SalesSummary WHERE 0 = 1");
    ResultSet rs = s.getResultSet();
    ResultSetMetaData rsmd = rs.getMetaData();
    for (int i = 1; i <= rsmd.getColumnCount(); i++) {
        System.out.println(String.format("-- Column %d --", i));
        System.out.println(String.format("Column name: %s", rsmd.getColumnName(i)));
        System.out.println(String.format("Database-specific type name: %s", rsmd.getColumnTypeName(i)));
        System.out.println(String.format("Column size (DisplaySize): %d", rsmd.getColumnDisplaySize(i)));
        System.out.println(String.format("java.sql.Type of column: %d", rsmd.getColumnType(i)));
        System.out.println();
    }
    s.close();
    conn.close();
}

From source file:TestClassForNameApp.java

public static void main(String args[]) {

    try {/*from   ww w . java 2  s .c om*/
        Class.forName("oracle.jdbc.driver.OracleDriver");
    } catch (ClassNotFoundException e) {
        System.out.println("Oops! Can't find class oracle.jdbc.driver.OracleDriver");
        System.exit(1);
    }

    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;
    try {
        conn = DriverManager.getConnection("jdbc:oracle:thin:@dssw2k01:1521:orcl", "scott", "tiger");

        stmt = conn.createStatement();
        rset = stmt.executeQuery("select 'Hello '||USER||'!' result from dual");
        while (rset.next())
            System.out.println(rset.getString(1));
        rset.close();
        rset = null;
        stmt.close();
        stmt = null;
        conn.close();
        conn = null;
    } catch (SQLException e) {
        System.out.println("Darn! A SQL error: " + e.getMessage());
    } finally {
        if (rset != null)
            try {
                rset.close();
            } catch (SQLException ignore) {
            }
        if (stmt != null)
            try {
                stmt.close();
            } catch (SQLException ignore) {
            }
        if (conn != null)
            try {
                conn.close();
            } catch (SQLException ignore) {
            }
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {

    Connection conn = getHSQLConnection();

    conn.setAutoCommit(false);//from w w w. j ava 2s .  co m
    Statement st = conn.createStatement();
    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st = conn.createStatement();
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    outputResultSet(rs);

    checkForWarning(rs.getWarnings());

    rs.close();
    st.close();
    conn.close();

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    try {/*from   w  w  w .  j av a  2s. com*/
        String url = "jdbc:odbc:yourdatabasename";
        String driver = "sun.jdbc.odbc.JdbcOdbcDriver";
        String user = "guest";
        String password = "guest";

        Class.forName(driver);
        Connection connection = DriverManager.getConnection(url, user, password);

        Statement stmt = connection.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
                ResultSet.CONCUR_READ_ONLY);

        String sqlQuery = "SELECT EMPNO, EName, Job, MGR, HIREDATE FROM EMP";

        ResultSet rs = stmt.executeQuery(sqlQuery);

        int rowSize = 0;
        while (rs.next()) {
            rowSize++;
        }

        System.out.println("Number of Rows in ResultSet is: " + rowSize);
        if (rowSize == 0) {
            System.out.println("Since there are no rows, exiting...");
            System.exit(0);
        }

        int cursorPosition = Math.round(rowSize / 2);

        System.out.println("Moving to position: " + cursorPosition);
        rs.absolute(cursorPosition);
        System.out.println("Name: " + rs.getString(2));

        rs.relative(-1);

        cursorPosition = rs.getRow();
        System.out.println("Moving to position: " + cursorPosition);
        System.out.println("Name: " + rs.getString(2));

        System.out.println("Moving to the first row");
        while (!rs.isFirst()) {
            rs.previous();
        }
        System.out.println("Name: " + rs.getString(2));
        connection.close();
    } catch (Exception e) {
        System.err.println(e);
    }
}

From source file:TestClassForNameNewInstanceApp.java

public static void main(String args[]) {

    try {//  ww w  .  ja va  2  s.  c  o m
        Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
    } catch (ClassNotFoundException e) {
        System.out.println("Oops! Can't find class oracle.jdbc.driver.OracleDriver");
        System.exit(1);
    } catch (IllegalAccessException e) {
        System.out.println("Uh Oh! You can't load oracle.jdbc.driver.OracleDriver");
        System.exit(2);
    } catch (InstantiationException e) {
        System.out.println("Geez! Can't instantiate oracle.jdbc.driver.OracleDriver");
        System.exit(3);
    }

    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;
    try {
        conn = DriverManager.getConnection("jdbc:oracle:thin:@dssw2k01:1521:orcl", "scott", "tiger");

        stmt = conn.createStatement();
        rset = stmt.executeQuery("select 'Hello '||USER||'!' result from dual");
        while (rset.next())
            System.out.println(rset.getString(1));
        rset.close();
        rset = null;
        stmt.close();
        stmt = null;
        conn.close();
        conn = null;
    } catch (SQLException e) {
        System.out.println("Darn! A SQL error: " + e.getMessage());
    } finally {
        if (rset != null)
            try {
                rset.close();
            } catch (SQLException ignore) {
            }
        if (stmt != null)
            try {
                stmt.close();
            } catch (SQLException ignore) {
            }
        if (conn != null)
            try {
                conn.close();
            } catch (SQLException ignore) {
            }
    }
}

From source file:com.kylinolap.query.QueryCli.java

public static void main(String[] args) throws Exception {

    Options options = new Options();
    options.addOption(OPTION_METADATA);/*from   w  ww .j  a v a 2 s  .  c om*/
    options.addOption(OPTION_SQL);

    CommandLineParser parser = new GnuParser();
    CommandLine commandLine = parser.parse(options, args);
    KylinConfig config = KylinConfig
            .createInstanceFromUri(commandLine.getOptionValue(OPTION_METADATA.getOpt()));
    String sql = commandLine.getOptionValue(OPTION_SQL.getOpt());

    Class.forName("net.hydromatic.optiq.jdbc.Driver");
    File olapTmp = OLAPSchemaFactory.createTempOLAPJson(null, config);

    Connection conn = null;
    Statement stmt = null;
    ResultSet rs = null;
    try {
        conn = DriverManager.getConnection("jdbc:optiq:model=" + olapTmp.getAbsolutePath());

        stmt = conn.createStatement();
        rs = stmt.executeQuery(sql);
        int n = 0;
        ResultSetMetaData meta = rs.getMetaData();
        while (rs.next()) {
            n++;
            for (int i = 1; i <= meta.getColumnCount(); i++) {
                System.out.println(n + " - " + meta.getColumnLabel(i) + ":\t" + rs.getObject(i));
            }
        }
    } finally {
        if (rs != null) {
            rs.close();
        }
        if (stmt != null) {
            stmt.close();
        }
        if (conn != null) {
            conn.close();
        }
    }

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    try {//from w  w  w  .  j av a 2  s  . c o m
        Connection conn = getHSQLConnection();

        conn.setAutoCommit(false);
        Statement st = conn.createStatement();
        st.executeUpdate("create table survey (id int,name varchar(30));");
        st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
        st = conn.createStatement();
        ResultSet rs = st.executeQuery("SELECT * FROM survey");

        outputResultSet(rs);

        rs.close();
        st.close();
        conn.close();
    } catch (SQLException sqle) {
        do { // loop through each exception
             // do something with each exception
            System.err.println("Exception occurred:\nMessage: " + sqle.getMessage());
            System.err.println("SQL state: " + sqle.getSQLState());
            System.err.println("Vendor code: " + sqle.getErrorCode() + "\n----------------");
        } while ((sqle = sqle.getNextException()) != null);
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {

    // Get warnings on ResultSet object
    ResultSet rs = null;//from w  w  w . ja va2  s  .c  o m
    Connection conn = null;
    Statement stmt = null;
    try {
        conn = getConnection(); // get a java.sql.Connection object
        stmt = conn.createStatement(); // create a statement
        // get a result set
        String sqlQuery = "select id, name from employees";
        rs = stmt.executeQuery(sqlQuery);
        while (rs.next()) {
            // use result set
            // 
            // get warnings on the current row of the ResultSet object
            SQLWarning warning = rs.getWarnings();
            if (warning != null) {
                // process result set warnings
            }
        }
    } catch (SQLException e) {
        // ignore the exception
    } finally {
        // close JDBC resources: ResultSet, Statement, Connection
    }

}