/// <summary>
/// 得到所有非主键列
/// </summary>
/// <param name="columns"></param>
/// <returns></returns>
public static ColumnMeta GetPrimaryKeyColumn(ColumnMetaCollection columns)
{
return(columns.Where((col) => { return col.IsKey; }).FirstOrDefault());
}
/// <summary>
/// 得到所有非主键列
/// </summary>
/// <param name="columns"></param>
/// <returns></returns>
public static ColumnMetaCollection GetPrimaryKeyColumns(ColumnMetaCollection columns)
{
return(new ColumnMetaCollection(columns.Where((col) => { return col.IsKey; })));
}