SelectWithUnionQuery (children 3) ExpressionList (children 1) SelectQuery (children 3) ExpressionList (children 3) Function plus (alias n) (children 1) ExpressionList (children 2) Function multiply (children 1) ExpressionList (children 2) Identifier number Literal UInt64_246 Literal UInt64_10 Function plus (alias d) (children 1) ExpressionList (children 2) Function toDate (children 1) ExpressionList (children 1) Literal \'2000-01-01\' Identifier n Function tuple (alias tuple) (children 1) ExpressionList (children 2) Identifier n Identifier d TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier system.numbers Literal UInt64_1 Identifier TabSeparatedWithNamesAndTypes Set