SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 2) ExpressionList (children 2) Identifier s Function or (children 1) ExpressionList (children 3) Function equals (children 1) ExpressionList (children 2) Identifier s Literal UInt64_21 Function equals (children 1) ExpressionList (children 2) Identifier s Literal UInt64_22 Function equals (children 1) ExpressionList (children 2) Identifier s Literal UInt64_23 TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier bug