recursive WITH clause must reference itself directly in one of the UNION ALL branches

Question

The following query is giving error : recursive WITH clause must reference itself directly in one of the UNION ALL branches

insert into tt_q_items
 WITH CTE 
  (
        REFUND_TRANSMISSION_QUEUE_KEY,
        FINANCIAL_REFUND_REQUEST_KEY,
        FINANCIAL_TRANSACTION_KEY,
        TRANSACTION_STATUS_KEY,
        REFUND_AMOUNT,
        TOTAL
  ) 
  AS
  (
        SELECT Q.refund_transmission_queue_key ,
        req.financial_refund_request_key ,
        txn.financial_transaction_key ,
        txn.transaction_status_key ,
        ABS(TXN.COLLECTION_AMOUNT) REFUND_AMOUNT ,
        ABS(txn.collection_amount) total
        FROM its_refund_transmission_queue Q
        JOIN its_financial_refund_request req
        ON req.financial_refund_request_key = Q.financial_transaction_key
        JOIN its_financial_transaction txn
        ON txn.linked_transaction_key = Q.financial_transaction_key
        JOIN r_financial_trans_type_x_cat TC
        ON TC.fin_transaction_type_key = txn.fin_transaction_type_key
        JOIN r_financial_tran_category C
        ON C.financial_tran_category_key = TC.financial_tran_category_key
        JOIN its_account acct
        ON acct.account_key            = txn.account_key
        WHERE C.code                   = 'REFUND'
        AND v_account_type_key        IS NULL
        OR acct.account_type_key       = v_account_type_key
        AND v_account_subtype_key     IS NULL
        OR acct.account_subtype_key    = v_account_subtype_key
        AND Q.offline_status_key       = v_offline_status_unprocessed
        AND TXN.TRANSACTION_STATUS_KEY = V_PENDTRANSMSN_TRANS_STATUS_KE
        AND ROWNUM                    <= 1
  UNION ALL
        SELECT 
     r.refund_transmission_queue_key,
         r.financial_refund_request_key, 
         r.financial_transaction_key, 
         r.transaction_status_key, 
        cast(REFUND_AMOUNT AS NUMBER(19,4)) ,
        CAST(TOTAL AS NUMBER(19,4)) total
        FROM
        (
            SELECT Q.refund_transmission_queue_key ,
            req.financial_refund_request_key ,
            txn.financial_transaction_key ,
            txn.transaction_status_key ,
            ABS(TXN.COLLECTION_AMOUNT) REFUND_AMOUNT ,
            (ABS(txn.collection_amount)+  CTE.total) total ,
            ROW_NUMBER() OVER ( ORDER BY Q.refund_transmission_queue_key ) rn
            FROM its_refund_transmission_queue Q
            JOIN its_financial_refund_request req
            ON req.financial_refund_request_key = Q.financial_transaction_key
            JOIN its_financial_transaction txn
            ON TXN.LINKED_TRANSACTION_KEY = Q.FINANCIAL_TRANSACTION_KEY
            JOIN r_financial_trans_type_x_cat TC
            ON TC.fin_transaction_type_key = txn.fin_transaction_type_key
            JOIN r_financial_tran_category C
            ON C.FINANCIAL_TRAN_CATEGORY_KEY = TC.FINANCIAL_TRAN_CATEGORY_KEY
              JOIN CTE r
                  ON  r.REFUND_TRANSMISSION_QUEUE_KEY < Q.REFUND_TRANSMISSION_QUEUE_KEY
                 WHERE TXN.TRANSACTION_STATUS_KEY   = V_PENDTRANSMSN_TRANS_STATUS_KE 
            AND C.CODE = 'REFUND'
        ) r
        WHERE   r.RN   = 1
        AND total <= v_max_dollars

  )

        SELECT Q.refund_transmission_queue_key ,
        Q.gl_account_key ,
        CTE.financial_refund_request_key ,
        CTE.financial_transaction_key ,
        CTE.transaction_status_key ,
        CTE.refund_amount
        FROM CTE
        JOIN its_refund_transmission_queue Q
        ON Q.refund_transmission_queue_key = CTE.refund_transmission_queue_key
        WHERE Q.offline_status_key         = v_offline_status_unprocessed
        AND CTE.transaction_status_key     = v_pendtransmsn_trans_status_ke 
        AND ROWNUM <= V_MAX_COUNT
        ORDER BY Q.GL_ACCOUNT_KEY;

i have no idea how to solve.. any suggestion would be helpful

Answer 1

You must bring CTE out of inline view like this:

    SELECT 
       r.refund_transmission_queue_key,
       r.financial_refund_request_key, 
       r.financial_transaction_key, 
       r.transaction_status_key, 
       cast(refund_amount as number(19,4)) ,
       CAST(TOTAL + r1.total AS NUMBER(19,4)) total
    FROM
    (
        select q.refund_transmission_queue_key ,
               req.financial_refund_request_key ,
               txn.financial_transaction_key ,
               txn.transaction_status_key ,
               ABS(TXN.COLLECTION_AMOUNT) REFUND_AMOUNT ,
               ABS(txn.collection_amount) total ,
               ROW_NUMBER() OVER ( ORDER BY Q.refund_transmission_queue_key ) rn
        FROM its_refund_transmission_queue Q
        JOIN its_financial_refund_request req
        ON req.financial_refund_request_key = Q.financial_transaction_key
        JOIN its_financial_transaction txn
        ON TXN.LINKED_TRANSACTION_KEY = Q.FINANCIAL_TRANSACTION_KEY
        JOIN r_financial_trans_type_x_cat TC
        ON TC.fin_transaction_type_key = txn.fin_transaction_type_key
        JOIN r_financial_tran_category C
        ON C.FINANCIAL_TRAN_CATEGORY_KEY = TC.FINANCIAL_TRAN_CATEGORY_KEY
        WHERE TXN.TRANSACTION_STATUS_KEY   = V_PENDTRANSMSN_TRANS_STATUS_KE 
          AND C.CODE = 'REFUND'
    ) r
    JOIN cte r1
    ON  r1.REFUND_TRANSMISSION_QUEUE_KEY < r.REFUND_TRANSMISSION_QUEUE_KEY
    where   r.rn   = 1
    AND total + r1.total <= v_max_dollars;