Example usage for java.sql ResultSetMetaData getColumnName

List of usage examples for java.sql ResultSetMetaData getColumnName

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Introduction

In this page you can find the example usage for java.sql ResultSetMetaData getColumnName.

Prototype

String getColumnName(int column) throws SQLException;

Source Link

Document

Get the designated column's name.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Class.forName("com.mysql.jdbc.Driver");
    Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/jdbctutorial", "root", "root");

    Statement st = con.createStatement();
    ResultSet rs = st.executeQuery("DESCRIBE myTable");
    ResultSetMetaData md = rs.getMetaData();
    int col = md.getColumnCount();
    for (int i = 1; i <= col; i++) {
        String col_name = md.getColumnName(i);
        System.out.println(col_name);
    }/*from  w w  w .j  ava 2 s  . com*/
    DatabaseMetaData dbm = con.getMetaData();
    ResultSet rs1 = dbm.getColumns(null, "%", "myTable", "%");
    while (rs1.next()) {
        String col_name = rs1.getString("COLUMN_NAME");
        String data_type = rs1.getString("TYPE_NAME");
        int data_size = rs1.getInt("COLUMN_SIZE");
        int nullable = rs1.getInt("NULLABLE");
        System.out.println(col_name + " " + data_type + "(" + data_size + ")");
        if (nullable == 1) {
            System.out.println("YES");
        } else {
            System.out.println("NO");
        }
    }
}

From source file:Main.java

public static void main(String[] args) throws ClassNotFoundException, SQLException {
    Class.forName(DRIVER);//  w w  w .j a  va 2 s.  c  o m
    Connection con = DriverManager.getConnection(CONNECTION_URL, USERNAME, PASSWORD);
    ResultSet rs = con.createStatement().executeQuery(QUERY);
    if (rs != null) {
        System.out.println("Column Type\t\t Column Name");

        ResultSetMetaData rsmd = rs.getMetaData();
        for (int i = 1; i <= rsmd.getColumnCount(); i++) {
            System.out.println(rsmd.getColumnTypeName(i) + "\t\t\t" + rsmd.getColumnName(i));
        }
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    String driver = "com.mysql.jdbc.Driver";
    String user = "root";
    String pass = "root";

    Class.forName(driver);//from   ww w.  ja  va 2s  .  c om
    Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/jdbctutorial", user, pass);

    Statement st = con.createStatement();
    ResultSet rs = st.executeQuery("SELECT * FROM employee6");
    ResultSetMetaData md = rs.getMetaData();
    int col = md.getColumnCount();
    System.out.println("Number of Column : " + col);
    for (int i = 1; i <= col; i++) {
        String col_name = md.getColumnName(i);
        System.out.println(col_name);
    }
}

From source file:ResultSetMetaDataExample.java

public static void main(String args[]) throws Exception {
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    Connection con = DriverManager.getConnection("jdbc:odbc:Inventory", "", "");
    Statement stmt = con.createStatement();

    boolean notDone = true;
    String sqlStr = null;//  w  w  w .  jav a 2  s  . c  om
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

    while (notDone) {
        sqlStr = br.readLine();
        if (sqlStr.startsWith("SELECT") || sqlStr.startsWith("select")) {
            ResultSet rs = stmt.executeQuery(sqlStr);
            ResultSetMetaData rsmd = rs.getMetaData();
            int columnCount = rsmd.getColumnCount();
            for (int x = 1; x <= columnCount; x++) {
                String columnName = rsmd.getColumnName(x);
                System.out.print(columnName);
            }
            while (rs.next()) {
                for (int x = 1; x <= columnCount; x++) {
                    if (rsmd.getColumnTypeName(x).compareTo("CURRENCY") == 0)
                        System.out.print("$");
                    String resultStr = rs.getString(x);
                    System.out.print(resultStr + "\t");
                }
            }
        } else if (sqlStr.startsWith("exit"))
            notDone = false;
    }
    stmt.close();
    con.close();
}

From source file:Main.java

public static void main(String args[]) throws Exception {
    Connection conn = null;//from  ww w  .  j  a  va 2  s  .  c om
    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:Main.java

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

    Class.forName(DRIVER);/*w w w.j av a 2  s.c  o m*/
    Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);

    Statement statement = connection.createStatement();
    ResultSet resultSet = statement.executeQuery("SELECT * FROM users");

    ResultSetMetaData metadata = resultSet.getMetaData();
    int columnCount = metadata.getColumnCount();

    ArrayList<String> columns = new ArrayList<String>();
    for (int i = 1; i < columnCount; i++) {
        String columnName = metadata.getColumnName(i);
        columns.add(columnName);
    }

    while (resultSet.next()) {
        for (String columnName : columns) {
            String value = resultSet.getString(columnName);
            System.out.println(columnName + " = " + value);
        }
    }
}

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.executeUpdate("insert into survey (id,name ) values (3,'Tom')");
    st = conn.createStatement();/*from w  ww  . j  av  a2s  .c  om*/
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    ResultSetMetaData rsMetaData = rs.getMetaData();
    int numberOfColumns = rsMetaData.getColumnCount();

    // get the column names; column indexes start from 1
    for (int i = 1; i < numberOfColumns + 1; i++) {
        String columnName = rsMetaData.getColumnName(i);
        String tableName = rsMetaData.getTableName(i);
        System.out.println(columnName);
        System.out.println(tableName);
    }

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

}

From source file:RSMetaDataMethods.java

public static void main(String args[]) {

    String url = "jdbc:mySubprotocol:myDataSource";
    Connection con;//ww  w .java  2 s . c  om
    Statement stmt;

    try {
        Class.forName("myDriver.ClassName");

    } catch (java.lang.ClassNotFoundException e) {
        System.err.print("ClassNotFoundException: ");
        System.err.println(e.getMessage());
    }

    try {
        con = DriverManager.getConnection(url, "myLogin", "myPassword");

        stmt = con.createStatement();

        ResultSet rs = stmt.executeQuery("select * from COFFEES");
        ResultSetMetaData rsmd = rs.getMetaData();

        int numberOfColumns = rsmd.getColumnCount();
        for (int i = 1; i <= numberOfColumns; i++) {
            String colName = rsmd.getColumnName(i);
            String tableName = rsmd.getTableName(i);
            String name = rsmd.getColumnTypeName(i);
            boolean caseSen = rsmd.isCaseSensitive(i);
            boolean writable = rsmd.isWritable(i);
            System.out.println("Information for column " + colName);
            System.out.println("    Column is in table " + tableName);
            System.out.println("    DBMS name for type is " + name);
            System.out.println("    Is case sensitive:  " + caseSen);
            System.out.println("    Is possibly writable:  " + writable);
            System.out.println("");
        }

        while (rs.next()) {
            for (int i = 1; i <= numberOfColumns; i++) {
                String s = rs.getString(i);
                System.out.print(s + "  ");
            }
            System.out.println("");
        }

        stmt.close();
        con.close();

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

From source file:Main.java

public static void main(String args[]) throws Exception {
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document doc = builder.newDocument();
    Element results = doc.createElement("Results");
    doc.appendChild(results);/*from   w  w w . j av a2 s  .c  o m*/

    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    Connection con = DriverManager
            .getConnection("jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=c:/access.mdb");

    ResultSet rs = con.createStatement().executeQuery("select * from product");

    ResultSetMetaData rsmd = rs.getMetaData();
    int colCount = rsmd.getColumnCount();

    while (rs.next()) {
        Element row = doc.createElement("Row");
        results.appendChild(row);
        for (int i = 1; i <= colCount; i++) {
            String columnName = rsmd.getColumnName(i);
            Object value = rs.getObject(i);
            Element node = doc.createElement(columnName);
            node.appendChild(doc.createTextNode(value.toString()));
            row.appendChild(node);
        }
    }
    DOMSource domSource = new DOMSource(doc);
    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer transformer = tf.newTransformer();
    transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
    transformer.setOutputProperty(OutputKeys.METHOD, "xml");
    transformer.setOutputProperty(OutputKeys.ENCODING, "ISO-8859-1");
    StringWriter sw = new StringWriter();
    StreamResult sr = new StreamResult(sw);
    transformer.transform(domSource, sr);

    System.out.println(sw.toString());

    con.close();
    rs.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getMySqlConnection();
    System.out.println("Got Connection.");
    Statement st = conn.createStatement();
    st.executeUpdate("drop table survey;");
    st.executeUpdate("create table survey (id int,name varchar(30));");
    st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')");

    st = conn.createStatement();//from   www.  j  a  va2s  .  c  o m
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    ResultSetMetaData rsMetaData = rs.getMetaData();

    int numberOfColumns = rsMetaData.getColumnCount();
    System.out.println("resultSet MetaData column Count=" + numberOfColumns);

    for (int i = 1; i <= numberOfColumns; i++) {
        System.out.println("column MetaData ");
        System.out.println("column number " + i);
        // get the column's name.
        System.out.println(rsMetaData.getColumnName(i));

    }

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