SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function COUNT (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 5)
          ExpressionList (children 1)
           Identifier meta_source_req_uuid
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier bug_14144
          Function equals (children 1)
           ExpressionList (children 2)
            Identifier meta_source_type
            Literal \'missing\'
          ExpressionList (children 1)
           OrderByElement (children 1)
            Identifier meta_source_req_uuid
          Literal UInt64_100000