How to set SQL query to the dataset dynamically?

[hemal.mehta-external]

Hi,

I have 5 sql queries and I am designing a report which have one dropdown control and that dropdown contains name of those queries.

Now, when user selects any one option from dropdown then accordingly that query should be set to the dataset and table should display data according to the result of that dataset.

Can anyone please guide me how this can be achieved?

Please note I am using Jaspersoft Studio for report development.

Thanks in advance.

[asimkin]

Hi,

first of all, I'd like to mention all the SQL queries must return identical set of fields, in your scenario.

In order to achieve the requirements, you could use $P!{} syntax : 

https://community.jaspersoft.com/documentation/tibco-jaspersoft-studio-user-guide/v71/using-parameters-queries-0

The idea is to create an additional hidden parameter which uses selected by user option from drop-down list to specify according query, like

IF($P{Parameter1}.equals("Q1"),"select orderid as id from orders",IF($P{Parameter1}.equals("Q2"),"select shipvia as id from orders","select 1 as id"))

Then, the report dataset query should be like

$P!{p_query}

Find attached sample report that demonstrates the idea.

Hope, this helps.

Best regards,
Andrew