`Unable to index data as case-sensitive using jdbc input in logstash`
even after using lowercase_column_names => false
What does your configuration look like? What does your data look like? What makes you think it is not working?
found the solution i have used postgres where the select query should be like select st."studentName" as studentName, st."departmentName" as departmentName and etc
before it was like st.studentName as studentName, st.departmentName as departmentName