CreateQuery hits_dst (children 2)
 Identifier hits_dst
 Storage definition (children 5)
  Function MergeTree
  Function toYYYYMM (children 1)
   ExpressionList (children 1)
    Identifier EventDate
  Function tuple (children 1)
   ExpressionList (children 3)
    Identifier CounterID
    Identifier EventDate
    Function intHash32 (children 1)
     ExpressionList (children 1)
      Identifier UserID
  Function intHash32 (children 1)
   ExpressionList (children 1)
    Identifier UserID
  Set