/// <summary>
/// Search Sql alias
/// </summary>
/// <param name="alias">Alias string</param>
/// <returns>Sql Alias</returns>
public ONSqlAlias GetOnSqlAlias(string alias)
{
ONSqlAlias lOnSqlAlias = null;
if (mFromAlias.ContainsKey(alias))
{
lOnSqlAlias = mFromAlias[alias];
}
if ((lOnSqlAlias == null) && (SuperQuery != null))
{
return(SuperQuery.GetOnSqlAlias(alias));
}
return(lOnSqlAlias);
}