SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 1) ExpressionList (children 3) Function array (alias nested) (children 1) ExpressionList (children 2) Function array (children 1) ExpressionList (children 2) Literal Tuple_(UInt64_1, \'Hello\') Literal Tuple_(UInt64_2, \'World\') Function array (children 1) ExpressionList (children 1) Literal Tuple_(UInt64_3, \'Goodbye\') Function tupleElement (children 1) ExpressionList (children 2) Identifier nested Literal UInt64_1 Function tupleElement (children 1) ExpressionList (children 2) Identifier nested Literal UInt64_2