alternative to listagg in Oracle?

Question

listagg is a function introduced in Oracle 11.2! now this function is bugging us allot, we are migrating from MySQL to Oracle and we have this query:

SELECT
         


        

Answer 1

You can solve the ORA-22814 error by using MULTISET instead of COLLECT:

SELECT
    p_id,
    MAX(registered) AS registered,
    listaggclob(cast(multiset(
        select MESSAGE
        from umm_parent_id_remarks_v
        where umm_parent_id_remarks_v.p_id = m.p_id
    ) as clob_t)) MESSAGE
  FROM
    umm_parent_id_remarks_v m
  GROUP BY
    m.p_id;