AlterQuery  ttl (children 2)
 ExpressionList (children 1)
  AlterCommand MODIFY_TTL (children 1)
   ExpressionList (children 1)
    TTLElement (children 1)
     Function if (children 1)
      ExpressionList (children 3)
       Function equals (children 1)
        ExpressionList (children 2)
         Function modulo (children 1)
          ExpressionList (children 2)
           Identifier i
           Literal UInt64_2
         Literal UInt64_0
       Function minus (children 1)
        ExpressionList (children 2)
         Function today (children 1)
          ExpressionList
         Literal UInt64_10
       Function toDate (children 1)
        ExpressionList (children 1)
         Literal \'2100-01-01\'
 Identifier ttl