CreateQuery mt (children 3)
 Identifier mt
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration n (children 1)
    DataType UInt64
   ColumnDeclaration s (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree
  Function intDiv (children 1)
   ExpressionList (children 2)
    Identifier n
    Literal UInt64_10
  Identifier n
