interface ResultSetMetaData:
ResultSet rs = stmt.executeQuery("SELECT a, b, c FROM TABLE2");
ResultSetMetaData rsmd = rs.getMetaData();
int numberOfColumns = rsmd.getColumnCount();
ResultSet rs = stmt.executeQuery("SELECT a, b, c FROM TABLE2");
ResultSetMetaData rsmd = rs.getMetaData();
int numberOfColumns = rsmd.getColumnCount();
int getColumnCount() throws SQLException;
使用方法:
int ColumnsCount;
ResultSetMetaData rsmd=rs.getMetaData();
try{
ColumnsCount=rsmd.getColumnCount();
}
catch(SQLException sqle){
......
}