SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Identifier _part
    Function isMergeTreePartCoveredBy (children 1)
     ExpressionList (children 2)
      Identifier _part
      Literal \'all_1_2_10\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier mt
   ExpressionList (children 1)
    OrderByElement (children 1)
     Function tupleElement (children 1)
      ExpressionList (children 2)
       Function mergeTreePartInfo (children 1)
        ExpressionList (children 1)
         Identifier _part
       Literal \'max_block\'
