SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Function CAST (alias src) (children 1)
     ExpressionList (children 2)
      Literal UInt64_123
      Literal \'String\'
    Identifier theAlias
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier alias_bug_dist
   Literal UInt64_1
 Identifier Null
