CreateQuery defaulted (children 3)
 Identifier defaulted
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration payload (children 1)
    DataType String
   ColumnDeclaration date (children 1)
    Function today (children 1)
     ExpressionList
   ColumnDeclaration key (children 1)
    Function multiply (children 1)
     ExpressionList (children 2)
      Literal UInt64_0
      Function rand (children 1)
       ExpressionList
 Storage definition (children 1)
  Function MergeTree (children 1)
   ExpressionList (children 3)
    Identifier date
    Identifier key
    Literal UInt64_8192