Example usage for java.sql ResultSet getMetaData

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 = getConnection();
    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  ww w  .  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);

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

From source file:Main.java

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

    conn.setAutoCommit(true);// w ww.  ja v a  2  s .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");

    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 {
    Class.forName(DRIVER);// ww  w  .ja v a 2 s. co m
    Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);

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

    ResultSetMetaData metadata = resultSet.getMetaData();
    if (metadata.isAutoIncrement(1)) {
        System.out.println("Column ID is an auto-increment column");
    }
}

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;/*from   w  w  w  .  j ava2 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 = 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();//w w  w  . j a  v a2 s  . c  o m
    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: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));
    }//w w  w.ja v a 2s.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  ww .  j av  a2 s  .  c o m
    Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);

    Statement statement = connection.createStatement();
    ResultSet resultSet = statement.executeQuery("SELECT id, username FROM users");
    ResultSetMetaData metadata = resultSet.getMetaData();
    int nullability = metadata.isNullable(1);

    if (nullability == ResultSetMetaData.columnNullable) {
        System.out.println("Columns ID can have a null value");
    } else if (nullability == ResultSetMetaData.columnNoNulls) {
        System.out.println("Columns ID does not allowed to have a null value");
    } else if (nullability == ResultSetMetaData.columnNullableUnknown) {
        System.out.println("Nullability unknown");
    }
}

From source file:Main.java

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

    DatabaseMetaData mtdt = conn.getMetaData();

    System.out.println(mtdt.getProcedureTerm());

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

    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  w  w w .j a v a2 s  .  c  om*/
    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:Example.java

public static void main(String args[]) {
    try {//from  w ww  . j a v  a 2s .com
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

        Connection con = DriverManager.getConnection("jdbc:odbc:inventory", "", "");
        Statement stmt = con.createStatement();
        ResultSet rs = stmt.executeQuery("SELECT * FROM inventory ORDER BY price");

        ResultSetMetaData rsmd = rs.getMetaData();
        int numberOfColumns = rsmd.getColumnCount();
        int rowCount = 1;
        while (rs.next()) {
            for (int i = 1; i <= numberOfColumns; i++) {
                System.out.print(rs.getString(i) + " ");
            }
            rowCount++;
        }
        stmt.close();
        con.close();
    } catch (Exception e) {
        System.out.println(e);
    }
}

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: Contacts");
    Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
    ResultSet rs = stmt.executeQuery("SELECT Name,Description,Qty,Cost FROM Stock");
    ResultSetMetaData md = rs.getMetaData();

    if (rs.getConcurrency() == ResultSet.CONCUR_UPDATABLE)
        System.out.println("UPDATABLE");
    else//from   w  ww .ja v  a  2 s  .  com
        System.out.println("READ_ONLY");

    int nColumns = md.getColumnCount();
    for (int i = 1; i <= nColumns; i++) {
        System.out.print(md.getColumnLabel(i) + ((i == nColumns) ? "\n" : "\t"));
    }
    while (rs.next()) {
        rs.updateString("Street", "123 Main");
        rs.updateRow();
        for (int i = 1; i <= nColumns; i++) {
            System.out.print(rs.getString(i) + ((i == nColumns) ? "\n" : "\t"));
        }
    }
}