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