Example usage for java.sql ResultSetMetaData getColumnCount

Introduction

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

Prototype

int getColumnCount() throws SQLException;

Source Link

Document

Returns the number of columns in this ResultSet object.

Usage

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  w ww  .ja v  a2  s.  co  m
    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:PrintResultSet.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();
    ResultSet rs = stmt.executeQuery("select * from employee");
    ResultSetMetaData md = rs.getMetaData();

    int nColumns = md.getColumnCount();
    for (int i = 1; i <= nColumns; i++) {

        System.out.print(md.getColumnLabel(i) + ((i == nColumns) ? "\n" : "\t"));
    }/*w  w  w.  j  av  a2  s. c o  m*/
    while (rs.next()) {
        for (int i = 1; i <= nColumns; i++) {
            System.out.print(rs.getString(i) + ((i == nColumns) ? "\n" : "\t"));
        }
    }
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

    ResultSet rs = DriverManager.getConnection("jdbc:odbc:employee_xls").createStatement()
            .executeQuery("Select * from [Sheet1$]");

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

    System.out.println("No of cols " + numberOfColumns);
    while (rs.next()) {
        for (int i = 1; i <= numberOfColumns; i++) {
            String columnValue = rs.getString(i);
            System.out.println(columnValue);
        }//  ww w .  j a  v  a 2  s  . c o m
    }
    rs.close();
}

From source file:Main.java

public static void main(String[] args) throws ClassNotFoundException, SQLException {
    Class.forName(DRIVER);//from  w  w w  .j  a v a  2 s.  co 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 {
    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  a  va 2 s . c o  m*/
    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 Exception {
    Connection conn = null;/*from w ww.j  a va2s.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:PrintIndexedResultSet.java

public static void main(String args[]) throws Exception {
    String query = "SELECT STATE, COUNT(STATE) FROM MEMBER_PROFILES GROUP BY STATE";
    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
    Connection con = DriverManager.getConnection("jdbc:odbc:Members");
    Statement stmt = con.createStatement();
    stmt.executeUpdate("CREATE INDEX STATE_INDEX ON MEMBER_PROFILES(STATE)");

    java.util.Date startTime = new java.util.Date();

    ResultSet rs = stmt.executeQuery(query);
    ResultSetMetaData md = rs.getMetaData();

    int nColumns = md.getColumnCount();
    for (int i = 1; i <= nColumns; i++) {
        System.out.print(md.getColumnLabel(i) + ((i == nColumns) ? "\n" : "\t"));
    }// w w w.ja va  2  s.  c om

    while (rs.next()) {
        for (int i = 1; i <= nColumns; i++) {
            System.out.print(rs.getString(i) + ((i == nColumns) ? "\n" : "\t"));
        }
    }
    java.util.Date endTime = new java.util.Date();
    long elapsedTime = endTime.getTime() - startTime.getTime();
    System.out.println("Elapsed time: " + elapsedTime);

    stmt.executeUpdate("DROP INDEX MEMBER_PROFILES.STATE_INDEX");
}

From source file:Main.java

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

    DatabaseMetaData mtdt = conn.getMetaData();

    ResultSet rs = mtdt.getTables(conn.getCatalog(), "%", "%", null);

    ResultSetMetaData rsmd = rs.getMetaData();
    int numCols = rsmd.getColumnCount();
    for (int i = 1; i <= numCols; i++) {
        if (i > 1)
            System.out.print(", ");
        System.out.print(rsmd.getColumnLabel(i));
    }//from www. ja v  a  2 s  .c  o  m
    System.out.println("");
    while (rs.next()) {
        for (int i = 1; i <= numCols; i++) {
            if (i > 1)
                System.out.print(", ");
            System.out.print(rs.getString(i));
        }
        System.out.println("");
    }
    conn.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getHSQLConnection();
    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();//w ww . j  a v  a 2s.com
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    ResultSetMetaData rsMetaData = rs.getMetaData();

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

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

From source file:Main.java

public static void main(String[] args) throws Exception {
    Connection conn = getHSQLConnection();
    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();// ww w.  jav  a2 s  . c om
    ResultSet rs = st.executeQuery("SELECT * FROM survey");

    ResultSetMetaData rsMetaData = rs.getMetaData();

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

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