SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 1) ExpressionList (children 1) Function modulo (children 1) ExpressionList (children 2) Function materialize (children 1) ExpressionList (children 1) Literal UInt64_1 Function CAST (children 1) ExpressionList (children 2) Literal NULL Literal \'Nullable(UInt32)\'