Hi Tanb,
You can try following the blog mentioned.
The idea in the blog is to display blank values using combined query in case the actual query is not returning any results.
For example:
I have the below query:
SELECT
column1, column2, column 3
FROM
table1
If it is not returning any data then I can modify it as follows:
SELECT
column1, column2, column 3
FROM
table1
UNION
SELECT
' ', ' ', ' '
FROM
table1
This will display blank values in the report instead of popping up the "no data to fetch" warning message.
The rule with the combined query is you need to have same number of columns in both queries.
It would be easy to achieve in case you have rights to edit the SQL else you will have to create same number of dummy objects at universe level in order to achieve this.
Hope it will help.
Regards,
Yuvraj