I want to type my name in the search bar and display the data in the table in view, but it doesn't work.
Example) Hit "Tanaka" and "Tamura" by typing "Ta"
I try to get arguments dynamically using the setParameter method in createNamedQuery.
Unable to retrieve more than one record.
Example) If you type "ta", the error "Operand should contain 1 column(s)" appears.
How do I retrieve multiple records in an ambiguous search?
Query statement
query="SELECTR FROM Report ASr WHEREer.employee=:employee"
query="SELECTE FROM Employee ASE WHERE e.name LIKE:name"
Controller
String employee_name =request.getParameter("search");
// Store query results in variables and retrieve records with the appropriate name
try {List<Employee>employee_search=em.createNameQuery("getEmployeesName",Employee.class)
.setParameter("name", employee_name+"%")
.getResultList();
System.out.println(employee_search);
// Retrieving data in the report table
List<Report>r_employee_id=em.createNameQuery("getCreateUser", Report.class)
.setParameter ("employee", employee_search)
.getResultList();
em.close();
The quick answer is that the first SQL (getEmployeesName) can retrieve multiple records, while the second SQL (getCreateUser) with those records as a search criteria is a WHERE clause (compared to =.Therefore,
query="SELECTR FROM Report ASr WHEREer.employee=:employee"
where
query="SELECTR FROM Report ASr WHEREER.employee IN:employee"
If you don't do this, it won't work.
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