How to Pass Multiple Values to an SQL 'IN' Clause in JasperReports?

Passing SQL "IN" Parameter List in JasperReports

When constructing queries in JasperReports, it's often necessary to use SQL's "IN" predicate to filter data based on a list of values. This can be achieved by dynamically specifying the parameter values in Java code.

Consider the scenario where a query uses an "IN" predicate to filter customers based on their roles:

SELECT customer_name AS NAME, 
       id_customer   AS ID 
  FROM customer 
 WHERE customer_role IN ($P{roles})

The "roles" parameter can receive multiple integer values, which will be determined dynamically during report generation. To set this parameter using Java code, follow these steps:

JasperReports provides a special variable, "$X," that simplifies handling "IN" parameters:

select * from customer where $X{IN,customer_role,roles}

This expression will effectively include the values specified in the "roles" parameter within the "IN" predicate. As highlighted in the linked documentation, this approach is compatible with JasperReports versions 3.5 and later and ensures the correct handling of multiple parameter values.

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