internal static IEnumerable <ColumnExpression> GetProjectedColumns(JoinExpression join)
{
IEnumerable <ColumnExpression> projectedColumns;
if (join.Left is FromExpression)
{
projectedColumns = ((FromExpression)join.Left).GetProjectedColumns();
}
else
{
projectedColumns = GetProjectedColumns((JoinExpression)join.Left);
}
if (join.Right is FromExpression)
{
projectedColumns = projectedColumns.Concat(((FromExpression)join.Right).GetProjectedColumns());
}
else
{
projectedColumns = projectedColumns.Concat(GetProjectedColumns((JoinExpression)join.Right));
}
return(projectedColumns);
}
internal static IEnumerable<ColumnExpression> GetProjectedColumns(JoinExpression join)
{
IEnumerable<ColumnExpression> projectedColumns;
if (join.Left is FromExpression)
projectedColumns = ((FromExpression)join.Left).GetProjectedColumns();
else
projectedColumns = GetProjectedColumns((JoinExpression)join.Left);
if (join.Right is FromExpression)
projectedColumns = projectedColumns.Concat(((FromExpression)join.Right).GetProjectedColumns());
else
projectedColumns = projectedColumns.Concat(GetProjectedColumns((JoinExpression)join.Right));
return projectedColumns;
}
