CreateQuery test hits_1m (children 3)
 Identifier test
 Identifier hits_1m
 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