SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function ignore (children 1)
     ExpressionList (children 1)
      Function CAST (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 2)
          Function arrayMap (children 1)
           ExpressionList (children 2)
            Function lambda (children 1)
             ExpressionList (children 2)
              Function tuple (children 1)
               ExpressionList (children 1)
                Identifier k
              Function toString (children 1)
               ExpressionList (children 1)
                Identifier k
            Function mapKeys (children 1)
             ExpressionList (children 1)
              Function uniqMapMerge (alias m) (children 1)
               ExpressionList (children 1)
                Identifier uniq_tags_ids
          Function mapValues (children 1)
           ExpressionList (children 1)
            Identifier m
        Literal \'Map(String, UInt32)\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier segfault_mv
