Alternate to Loops and Read Statements in HANA procedures

Hi Experts,

We have a client upgrading to HANA so there are many reports that we would like to code pushdown.

There are certain challenges that we are facing while creating procedures like:

The existing report has many loops and read statements inside so we are planning to bring that logic down inside Procedures.

As of now all the Select Queries have been incorporated via CE Functions inside the Procedures but the main challenge now is how to code for loop and read statements inside procedures.

I would like to put a loop on the output parameters below:

Also,Is it a good practice to remove all the loops and read statements and writing them in Procuderes or just leave them as it is and just put the Select Queries inside Procedures.

Below is the screen shot of the code that we want to have inside our procedures:

I guess we would have to use For and Cursor Statements but never used them.

Thanks,
Gaurav