C# 클래스 Shaolinq.Persistence.Linq.Expressions.SqlSubqueryExpression
Represents an aggregate subquery before the aggregate has been rewritten.
When a LINQ query projects a column using an aggregate, the subquery holds a select expression that represents that single aggregate call. The subquery consists of the part inside the outer parenthesis: SELECT (SELECT MAX(id) FROM product) AS max FROM product;