光学查询中减去 function

Question

I have requirement to do minus in one of the use case but in MarkLogic I am not able to use minus function. Is there any alternate way to do this?

select table1.value1 from table1 where table1.date = '2020-11-27'
minus
select table1.value1 from table1 where table1.date = '2020-11-26'

Answer 1

The " MINUS " operator is a SPARQL operator. Similar functionality is supported in MarkLogic's Optic API using the op:except() operator. You can also use the " MINUS " operator in SPARQL and op:from-sparql() in the Optic API, and the " EXCEPT " operator in SQL and op:from-sql() in the Optic API.

Answer 2

The minus/subtraction operator in XQuery is "-", like in most languages. The rest of your code looks a bit like SQL to me (though I last used SQL about 30 years ago) and it will all need changing.

I don't now what "Optic Query" is, I'm afraid.