Example usage for java.sql ResultSet getMetaData

List of usage examples for java.sql ResultSet getMetaData

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Introduction

In this page you can find the example usage for java.sql ResultSet getMetaData.

Prototype

ResultSetMetaData getMetaData() throws SQLException;

Source Link

Document

Retrieves the number, types and properties of this ResultSet object's columns.

Usage

From source file:Main.java

public static void main(String args[]) throws Exception {
    Connection conn = null;/*from  www .  j  a v  a 2 s  .c  o  m*/
    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[] argv) throws Exception {
    String driver = "com.mysql.jdbc.Driver";
    String user = "root";
    String pass = "root";

    Class.forName(driver);/* w  ww. j a  v  a  2 s .  c  o 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.jav  a  2  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: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"));
    }//from 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 {

    Class.forName(DRIVER);/*  w ww .  ja va 2s . c om*/
    Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);

    Statement statement = connection.createStatement();
    String query = "SELECT stock_id, name, price FROM stocks";
    ResultSet resultSet = statement.executeQuery(query);

    ResultSetMetaData metadata = resultSet.getMetaData();
    int precision = metadata.getPrecision(3);
    int scale = metadata.getScale(3);

    System.out.println("Precision: " + precision);
    System.out.println("Scale    : " + scale);
}

From source file:Main.java

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

    DatabaseMetaData mtdt = conn.getMetaData();

    // list catalogs managed by this dbms
    System.out.println(mtdt.getCatalogTerm());

    ResultSet rs = mtdt.getCatalogs();

    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 . j ava2  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 {
    Class.forName(DRIVER);/*from w  w w  .ja  va2  s  . com*/
    Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);

    Statement statement = connection.createStatement();
    String query = "SELECT a.id, a.username, a.country_id, b.country_name " + "FROM users a "
            + "LEFT JOIN countries b ON a.country_id = b.id";
    ResultSet resultSet = statement.executeQuery(query);

    ResultSetMetaData metadata = resultSet.getMetaData();

    String tableName = metadata.getTableName(1);
    System.out.println("Table name of column 'id' = " + tableName);

    tableName = metadata.getTableName(4);
    System.out.println("Table name of column 'country name' = " + tableName);
}

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 v a 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 = 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();//from  w  ww  .  java  2 s.co m
    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();//from   www  .  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);

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