Provision to select data from mifos tables using a query based functionality in Question Group

Question group supports the functionality of entering the required information after configuration. Enhancing this functionality further to support some data retrieval from existing product tables of mifos.
We will be adding a new question group type "Select statement" on selecting this question group type, system administrator can enter the query required for retrieval into this fields. End users can select the data from the drop down.
There is a need to select guarantor while creating a loan, remembering the customer number is difficult, hence a query based plug-in into the question group will ease the user process.