CreateQuery x (children 3)
 Identifier x
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration CounterID (children 1)
    DataType UInt32
   ColumnDeclaration EventDate (children 1)
    DataType Date
   ColumnDeclaration UserID (children 1)
    DataType UInt64
 Storage definition (children 1)
  Function MergeTree (children 1)
   ExpressionList (children 4)
    Identifier EventDate
    Function intHash32 (children 1)
     ExpressionList (children 1)
      Identifier UserID
    Function tuple (children 1)
     ExpressionList (children 3)
      Identifier CounterID
      Identifier EventDate
      Function intHash32 (children 1)
       ExpressionList (children 1)
        Identifier UserID
    Literal UInt64_8192
