根据相同主键,合并其他字段值,形成一条记录(oracle)

将具有相同的主键INVT_PROD_ID值,其他列值CLAUSE_MEMO,CLAUSE_TP_CD,BBCK_DT使用||进行合并,形成一条记录:
select INVT_PROD_ID,
       MAX(subStr(CLAUSE_MEMO, 3)) CLAUSE_MEMO,
       MAX(subStr(CLAUSE_TP_CD, 3)) CLAUSE_TP_CD,
       MAX(subStr(BBCK_DT, 3)) BBCK_DT
  from (SELECT INVT_PROD_ID,
               sys_connect_by_path(CLAUSE_MEMO, '' || '') CLAUSE_MEMO,
               sys_connect_by_path(CLAUSE_TP_CD, '' || '') CLAUSE_TP_CD,
               sys_connect_by_path(BBCK_DT, '' || '') BBCK_DT
          FROM (SELECT INVT_PROD_ID,
                       CLAUSE_MEMO,
                       CLAUSE_TP_CD,
                       BBCK_DT,
                       INVT_PROD_ID || rn rchild,
                       INVT_PROD_ID || (rn - 1) rfather
                  FROM (SELECT INVT_PROD_ID,
                               CLAUSE_MEMO,
                               CLAUSE_TP_CD,
                               BBCK_DT,
                               row_number() over(PARTITION BY A.INVT_PROD_ID ORDER BY A.CLAUSE_TP_CD) rn
                          FROM (Select CLAUSE_MEMO,
                                       CLAUSE_TP_CD,
                                       BBCK_DT,
                                       INVT_PROD_ID
                                  From V_J_B_CLAUSE
                                 where INVT_PROD_ID In
                                       (Select INVT_PROD_ID
                                          From V_J_B_CLAUSE
                                         Group By INVT_PROD_ID
                                        Having Count(*) > 1)) A) AA) AAA
        CONNECT BY PRIOR rchild = rfather
         START WITH rfather LIKE '' %0 '') AAAA
group by INVT_PROD_ID

union

Select to_char(INVT_PROD_ID),
       to_char(CLAUSE_MEMO),
       to_char(CLAUSE_TP_CD),
       to_char(BBCK_DT)
  From V_J_B_CLAUSE
where INVT_PROD_ID In (Select INVT_PROD_ID
                          From V_J_B_CLAUSE
                         Group By INVT_PROD_ID
                        Having Count(*) = 1)