Example usage for java.sql ResultSetMetaData getColumnCount

List of usage examples for java.sql ResultSetMetaData getColumnCount

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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[] 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  w w w  .  j  a v  a 2s.  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);

    for (int i = 1; i <= numberOfColumns; i++) {
        System.out.println("column MetaData ");
        System.out.println("column number " + i);
        // indicates the designated column's normal maximum width in
        // characters
        System.out.println(rsMetaData.getColumnDisplaySize(i));
        // gets the designated column's suggested title
        // for use in printouts and displays.
        System.out.println(rsMetaData.getColumnLabel(i));
        // get the designated column's name.
        System.out.println(rsMetaData.getColumnName(i));

        // get the designated column's SQL type.
        System.out.println(rsMetaData.getColumnType(i));

        // get the designated column's SQL type name.
        System.out.println(rsMetaData.getColumnTypeName(i));

        // get the designated column's class name.
        System.out.println(rsMetaData.getColumnClassName(i));

        // get the designated column's table name.
        System.out.println(rsMetaData.getTableName(i));

        // get the designated column's number of decimal digits.
        System.out.println(rsMetaData.getPrecision(i));

        // gets the designated column's number of
        // digits to right of the decimal point.
        System.out.println(rsMetaData.getScale(i));

        // indicates whether the designated column is
        // automatically numbered, thus read-only.
        System.out.println(rsMetaData.isAutoIncrement(i));

        // indicates whether the designated column is a cash value.
        System.out.println(rsMetaData.isCurrency(i));

        // indicates whether a write on the designated
        // column will succeed.
        System.out.println(rsMetaData.isWritable(i));

        // indicates whether a write on the designated
        // column will definitely succeed.
        System.out.println(rsMetaData.isDefinitelyWritable(i));

        // indicates the nullability of values
        // in the designated column.
        System.out.println(rsMetaData.isNullable(i));

        // Indicates whether the designated column
        // is definitely not writable.
        System.out.println(rsMetaData.isReadOnly(i));

        // Indicates whether a column's case matters
        // in the designated column.
        System.out.println(rsMetaData.isCaseSensitive(i));

        // Indicates whether a column's case matters
        // in the designated column.
        System.out.println(rsMetaData.isSearchable(i));

        // indicates whether values in the designated
        // column are signed numbers.
        System.out.println(rsMetaData.isSigned(i));

        // Gets the designated column's table's catalog name.
        System.out.println(rsMetaData.getCatalogName(i));

        // Gets the designated column's table's schema name.
        System.out.println(rsMetaData.getSchemaName(i));
    }

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

From source file:PrintColumns.java

public static void main(String args[]) {

    String url = "jdbc:mySubprotocol:myDataSource";
    Connection con;// w  w w .j  a  va 2 s  . co  m
    String query = "select * from COFFEES";
    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(query);
        ResultSetMetaData rsmd = rs.getMetaData();

        PrintColumnTypes.printColTypes(rsmd);
        System.out.println("");

        int numberOfColumns = rsmd.getColumnCount();

        for (int i = 1; i <= numberOfColumns; i++) {
            if (i > 1)
                System.out.print(",  ");
            String columnName = rsmd.getColumnName(i);
            System.out.print(columnName);
        }
        System.out.println("");

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

        stmt.close();
        con.close();
    } catch (SQLException ex) {
        System.err.print("SQLException: ");
        System.err.println(ex.getMessage());
    }
}

From source file:Main.java

public static int storedProcWithResultSet() throws Exception {
    Connection conn = null;/*  w  w  w.ja  v a 2 s. c o  m*/
    CallableStatement cs = conn.prepareCall("{? = call proc (?,?,?,?,?,?,?)}");

    // register input parameters
    cs.setString(2, "");
    cs.setString(3, "");
    cs.setString(4, "123");
    // regsiter ouput parameters
    cs.registerOutParameter(5, java.sql.Types.CHAR);
    cs.registerOutParameter(6, java.sql.Types.CHAR);
    cs.registerOutParameter(7, java.sql.Types.CHAR);

    // Procedure execution
    ResultSet rs = cs.executeQuery();

    ResultSetMetaData rsmd = rs.getMetaData();
    int nbCol = rsmd.getColumnCount();
    while (rs.next()) {
        for (int i = 1; i <= nbCol; i++) {
            System.out.println(rs.getString(i));
            System.out.println(rs.getString(i));
        }
    }
    // OUTPUT parameters
    System.out.println("return code of Stored procedure = : " + cs.getInt(1));
    for (int i = 5; i <= 7; i++)
        System.out.println("parameter " + i + " : " + cs.getString(i));
    return cs.getInt(1);
}

From source file:Main.java

private static void outputResultSet(ResultSet rs) throws Exception {
    ResultSetMetaData rsMetaData = rs.getMetaData();
    int numberOfColumns = rsMetaData.getColumnCount();
    for (int i = 1; i < numberOfColumns + 1; i++) {
        String columnName = rsMetaData.getColumnName(i);
        System.out.print(columnName + "   ");

    }/* w w w .  j av  a  2  s.c om*/
    while (rs.next()) {
        for (int i = 1; i < numberOfColumns + 1; i++) {
            System.out.print(rs.getString(i) + "   ");
        }
        System.out.println();
    }

}

From source file:Main.java

private static void outputResultSet(ResultSet rs) throws Exception {
    ResultSetMetaData rsMetaData = rs.getMetaData();
    int numberOfColumns = rsMetaData.getColumnCount();
    for (int i = 1; i < numberOfColumns + 1; i++) {
        String columnName = rsMetaData.getColumnName(i);
        System.out.print(columnName + "   ");

    }/*  www.  ja v  a 2s .  c  om*/
    System.out.println();
    System.out.println("----------------------");

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

}

From source file:RSMetaData.java

public static void printColumnInfo(ResultSet rs) throws SQLException {
    ResultSetMetaData rsmd = rs.getMetaData();
    int cols = rsmd.getColumnCount();
    for (int colIdx = 1; colIdx <= cols; colIdx++) {
        String name = rsmd.getColumnName(colIdx);
        int type = rsmd.getColumnType(colIdx);
        String typeName = rsmd.getColumnTypeName(colIdx);
        System.out.println(name + ", " + type + ", " + typeName);
    }/*  ww  w .j  a va 2 s.c o  m*/
}

From source file:GetColumnNamesFromResultSet_MySQL.java

public static void getColumnNames(ResultSet rs) throws SQLException {
    if (rs == null) {
        return;//from   ww w .  java2  s.  c o  m
    }
    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);
        // Get the name of the column's table name
        String tableName = rsMetaData.getTableName(i);
        System.out.println("column name=" + columnName + " table=" + tableName + "");
    }
}

From source file:GetColumnNamesFromResultSet_Oracle.java

public static void getColumnNames(ResultSet rs) throws SQLException {
    if (rs == null) {
        return;/*from   www . ja  va  2 s.co m*/
    }
    // get result set meta data
    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);
        // Get the name of the column's table name
        String tableName = rsMetaData.getTableName(i);
        System.out.println("column name=" + columnName + " table=" + tableName + "");
    }
}

From source file:Main.java

private static void outputResultSet(ResultSet rs) throws Exception {
    ResultSetMetaData rsMetaData = rs.getMetaData();
    int numberOfColumns = rsMetaData.getColumnCount();
    for (int i = 1; i < numberOfColumns + 1; i++) {
        String columnName = rsMetaData.getColumnName(i);
        System.out.print(columnName + "   ");

    }/*from w  w  w  .  ja  va 2  s. c o m*/
    while (rs.next()) {
        for (int i = 1; i < numberOfColumns + 1; i++) {
            System.out.print(rs.getString(i) + "   ");
        }
        System.out.println();
    }
}

From source file:RSMetaData.java

public static void printColumnNames(ResultSet rs) throws SQLException {
    ResultSetMetaData rmd = rs.getMetaData();
    for (int col = 1; col <= rmd.getColumnCount(); col++)
        System.out.println(rmd.getColumnName(col) + " ");
}