CreateQuery ttl (children 3)
 Identifier ttl
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration d (children 1)
    DataType Date
   ColumnDeclaration a (children 1)
    DataType Int
 Storage definition (children 4)
  Function MergeTree
  Function toDayOfMonth (children 1)
   ExpressionList (children 1)
    Identifier d
  Function tuple (children 1)
   ExpressionList
  Set