oracle 把一行用特殊符号分隔变为多行

首先创建测试数据

-- Create table
create table UF_PQJZB
(
  id                     INTEGER not null,
  requestid              INTEGER,
  pqmc                   VARCHAR2(100),
  sszq                   INTEGER,
  sfyx                   INTEGER,
  formmodeid             INTEGER,
  modedatacreater        INTEGER,
  modedatacreatertype    INTEGER,
  modedatacreatedate     VARCHAR2(10),
  modedatacreatetime     VARCHAR2(8),
  modedatamodifier       INTEGER,
  modedatamodifydatetime VARCHAR2(100),
  modeuuid               VARCHAR2(100),
  modelableid            VARCHAR2(200),
  pqbm                   VARCHAR2(99),
  qdbls                  INTEGER,
  pqdd                   CLOB
)
tablespace ECOLOGY
  pctfree 10
  initrans 1
  maxtrans 255
  storage
  (
    initial 64K
    next 1M
    minextents 1
    maxextents unlimited
  );
-- Create/Recreate indexes 
create index UF_IND_1595982945177 on UF_PQJZB (MODEUUID)
  tablespace ECOLOGY
  pctfree 10
  initrans 2
  maxtrans 255
  storage
  (
    initial 64K
    next 1M
    minextents 1
    maxextents unlimited
  );
-- Create/Recreate primary, unique and foreign key constraints 
alter table UF_PQJZB
  add primary key (ID)
  using index 
  tablespace ECOLOGY
  pctfree 10
  initrans 2
  maxtrans 255
  storage
  (
    initial 64K
    next 1M
    minextents 1
    maxextents unlimited
  );

插入数据

insert into uf_pqjzb (ID, AA)
values (57, '5120,4940');

sql显示

SELECT * FROM 
(
with t AS (
SELECT id,to_char(pqdd) AS aa from uf_pqjzb WHERE pqdd IS NOT NULL AND ID ='57' 
)
select ID,regexp_substr(aa, '[^,]+', 1, level) cc
 
from t
 
connect by level <= regexp_count(aa, '\,\') + 1
 
and aa = prior aa
 
and prior dbms_random.value > 0
)

结果显示

 

 最后我们可以学一个行转列函数

根据id合并

SELECT ID , LISTAGG(cc, ',') WITHIN GROUP (ORDER BY ID)
  FROM (SELECT * FROM 
(
with t AS (
SELECT id,to_char(pqdd) AS aa from uf_pqjzb WHERE pqdd IS NOT NULL AND ID ='57' 
)
select ID,regexp_substr(aa, '[^,]+', 1, level) cc
 
from t
 
connect by level <= regexp_count(aa, '\,\') + 1
 
and aa = prior aa
 
and prior dbms_random.value > 0
))
 GROUP BY ID;

 

结果

 

 好了，当然也可以用WM_CONCAT函数

但是一定要注意WM_CONCAT转换为是clob字段需要注意