Working in Query Array in CB DB

If the array filed in the document us a1

SELECT   du.* FROM default AS d UNNEST d.a1 AS du 
WHERE du.DeptCode = "FOE" AND RoleCode = "HOD";

https://docs.couchbase.com/server/5.5/n1ql/n1ql-language-reference/indexing-arrays.html

Also Checkout “Where” clause inside array not working

https://query-tutorial.couchbase.com/tutorial/#1