Shaolinq.Persistence.Linq.Optimizers.SqlRedundantSubqueryRemover.VisitProjection C# (CSharp) Method

		protected override Expression VisitProjection(SqlProjectionExpression projection)
		{
			projection = (SqlProjectionExpression)base.VisitProjection(projection);

			if (projection.Select.From is SqlSelectExpression)
			{
				var redundantQueries = SqlRedundantSubqueryFinder.Find(projection.Select);

				if (redundantQueries != null)
				{
					projection = SubqueryRemover.Remove(projection, redundantQueries);
				}
			}

			return projection;
		}