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_3
         Literal UInt64_0
       Function toDate (children 1)
        ExpressionList (children 1)
         Literal \'2000-01-01\'
       Function toDate (children 1)
        ExpressionList (children 1)
         Literal \'2100-01-01\'
 Identifier ttl
