Can user defined aggregate functions be modeled in EDS?

Issue

• desire to create a pushdown UDF for the LISTAGG oracle function
• The syntax of LISTAGG in source DB is as below (LISTAGG is using WITHIN GROUP).

SELECT LISTAGG(last_name,';') WITHIN GROUP (ORDER BY hire_date, last_name) "Emp_list"  FROM employees  WHERE department_id = 30;