SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 3) ExpressionList (children 1) Function if (children 1) ExpressionList (children 3) Function equals (children 1) ExpressionList (children 2) Function modulo (children 1) ExpressionList (children 2) Identifier number Literal UInt64_3 Literal UInt64_2 Literal Tuple_(UInt64_1, \'Hello\') Literal Tuple_(UInt64_2, \'World\') TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier system.numbers Literal UInt64_10