Data driven testin gusing Datasource excel and JDBC both.

I am using 2 data source in my project one for excel and another one for JDBC. I use excel data source as one source of input. I pass some values in excel data source to JDBC data source to retrive data from database. I pass some values from excel as an input for POST query I get web service response. Data base shows output has mutiple rows. The problem is when I try to add assertion to service response by comapring with JDBC data source output I am unable to select specific value in a column as a column contains multiple records. Ready API is taking only the top most value of the JDBC output.