`TSQLSelectStatement`
		TransactionName
	ro	Tables
	ro	Fields
		Where
	ro	GroupBy
		Having
	ro	Orderby
		ForUpdate
		Union
		Plan
	ro	Limit
		Distinct
		All
		UnionAll
		StartAt
		EndAt
		Into

`TSQLDMLStatement`

`TSQLStatement`

`TSQLElement`
	ro	Parent
		Source
		SourceLine
		SourcePos