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:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);

    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (2,null)");
    st = conn.createStatement();/*w  w w  .j a  v a 2  s.  c om*/
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    int rsConcurrency = rs.getConcurrency();
    if (rsConcurrency == java.sql.ResultSet.CONCUR_READ_ONLY) {
        System.out.println("java.sql.ResultSet.CONCUR_READ_ONLY");
    } else if (rsConcurrency == java.sql.ResultSet.CONCUR_UPDATABLE) {
        System.out.println("java.sql.ResultSet.CONCUR_UPDATABLE");
    } else {
        // it is an error

    }

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

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);

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

    int rsType = rs.getType();
    if (rsType == java.sql.ResultSet.TYPE_FORWARD_ONLY) {
        System.out.println("java.sql.ResultSet.TYPE_FORWARD_ONLY");
    } else if (rsType == java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE) {
        System.out.println("java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE");
    } else if (rsType == java.sql.ResultSet.TYPE_SCROLL_SENSITIVE) {
        System.out.println("java.sql.ResultSet.TYPE_SCROLL_SENSITIVE");
    } else {
        // it is an error

    }

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

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);

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

    // extract data from the ResultSet
    while (rs.next()) {
        int id = rs.getInt(1);
        System.out.println("id=" + id);
        String name = rs.getString(2);
        System.out.println("name=" + name);
        if (rs.wasNull()) {
            System.out.println("name is null");
        } else {
            System.out.println("name is not null");
        }
        System.out.println("---------------");
    }
    rs.close();
    st.close();
    conn.close();

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement stmt = conn.createStatement();

    stmt.executeUpdate("create table survey (id int, register int );");

    String sql = "INSERT INTO survey (register) VALUES(?)";
    PreparedStatement pstmt = conn.prepareStatement(sql);

    pstmt.setBoolean(1, true);//from  w  ww  .  j av  a 2 s. co  m
    pstmt.executeUpdate();

    pstmt.setBoolean(1, false);
    pstmt.executeUpdate();

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    while (rs.next()) {
        System.out.println(rs.getString(2));
    }
    rs.close();
    stmt.close();
    conn.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    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.executeUpdate("insert into survey (id,name ) values (2,null)");
    st.executeUpdate("insert into survey (id,name ) values (3,'Tom')");
    st = conn.createStatement();/*from   w  w w.  j a v a  2  s.  c om*/
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    rs = st.executeQuery("SELECT COUNT(*) FROM survey");
    // get the number of rows from the result set
    rs.next();
    int rowCount = rs.getInt(1);
    System.out.println(rowCount);

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

}

From source file:Main.java

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

    Connection conn = getConnection();

    conn.setAutoCommit(false);//from   www  .ja va  2 s .  c  o m
    Statement st = conn.createStatement();

    st.setFetchSize(1);

    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");
    st.executeUpdate("insert into survey (id,name ) values (2,'nameValue')");
    st = conn.createStatement();
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    rs.setFetchSize(1);

    outputResultSet(rs);

    checkForWarning(rs.getWarnings());

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

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection con = DriverManager.getConnection("jdbc:h2:mem:");
    Statement s = con.createStatement();
    s.execute("CREATE TABLE Table1 (Column1 CLOB)");

    InputStream is = new FileInputStream("data.txt");
    Reader rdr = new InputStreamReader(is, StandardCharsets.ISO_8859_1);
    PreparedStatement ps = con.prepareStatement("INSERT INTO Table1 (Column1) VALUES (?)");
    ps.setCharacterStream(1, rdr);/* w  w  w. j a v  a 2 s.c o  m*/
    ps.executeUpdate();

    ResultSet rs = s.executeQuery("SELECT Column1 FROM Table1");
    int rowNumber = 0;
    while (rs.next()) {
        String str = rs.getString("Column1");
        System.out.println(String.format("Row %d: CLOB is %d character(s) long.", ++rowNumber, str.length()));
    }
    rs.close();
    con.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement stmt = conn.createStatement();

    stmt.executeUpdate("create table survey (id int, register int );");

    String sql = "INSERT INTO survey (register) VALUES(?)";
    PreparedStatement pstmt = conn.prepareStatement(sql);

    pstmt.setBoolean(1, true);//from  ww w . j a v  a 2 s. c om
    pstmt.executeUpdate();

    pstmt.setBoolean(1, false);
    pstmt.executeUpdate();

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    while (rs.next()) {
        System.out.println(rs.getString(2));
    }

    rs.close();
    stmt.close();
    conn.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement st = conn.createStatement();

    st.executeUpdate("create table survey (id int,myDate DATE);");
    String INSERT_RECORD = "insert into survey(id, myDate) values(?, ?)";

    PreparedStatement pstmt = conn.prepareStatement(INSERT_RECORD);
    pstmt.setString(1, "1");
    pstmt.setNull(2, java.sql.Types.DATE);

    pstmt.executeUpdate();/*  w w  w. ja  va 2s  .  co m*/

    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    outputResultSet(rs);

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

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getConnection();
    Statement stmt = conn.createStatement();
    stmt.executeUpdate("create table survey (id int, name BINARY );");
    String sql = "INSERT INTO survey (name) VALUES(?)";
    PreparedStatement pstmt = conn.prepareStatement(sql);
    String myData = "some string data ...";
    byte[] binaryData = myData.getBytes();
    pstmt.setBytes(1, binaryData);/* ww  w  .  jav  a  2s  .c om*/
    pstmt.executeUpdate();

    ResultSet rs = stmt.executeQuery("SELECT * FROM survey");
    while (rs.next()) {
        System.out.print(rs.getBytes("name").length + "   ");
    }
    rs.close();
    stmt.close();
    conn.close();
}