oralce逗号分割变多行

方法一

select a.*,

REGEXP_SUBSTR(a.rolecode,'[^,]+',1,l) AS rolecode

from p_user a,(SELECT LEVEL l FROM DUAL CONNECT BY LEVEL<=100) b

WHERE l <=LENGTH(a.rolecode) - LENGTH(REPLACE(rolecode,','))+1

使用函数REGEXP_SUBSTR拆分字符串：

5个参数

第一个是输入的字符串

第二个是正则表达式

第三个是标识从第几个字符开始正则表达式匹配。（默认为1）

第四个是标识第几个匹配组。（默认为1）

第五个是是取值范围：

i：大小写不敏感；

c：大小写敏感；

n：点号 . 不匹配换行符号；

m：多行模式；

x：扩展模式，忽略正则表达式中的空白字符。

SELECT a.*,REGEXP_SUBSTR(servicereqid,'[^;]+',l) AS servicereq

FROM sum_portal_satisfaction a,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;">WHERE l <=LENGTH(servicereqid) - LENGTH(REPLACE(servicereqid,';'))+1

ORDER BY 1,2;

----SELECT LEVEL l FROM DUAL CONNECT BY LEVEL<=100; 生成1到100的数据行。

----l <=LENGTH(servicereqid) - LENGTH(REPLACE(servicereqid,';'))+1，注意此处是‘L’并非‘1’，上面的REGEXP_SUBSTR的第四个参数也一样。

---下面为拆分字符串，再进行的行转列

create or replace view v_sum_portal_satisfaction_sr as

select

survey_type,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;">survey_time,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;">center_code,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;">center_name,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;">city_id,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;">city_name,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;">REGEXP_SUBSTR(servicereqid,l) AS servicereqid,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;">REGEXP_SUBSTR(servicereqname,l) AS servicereqname,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;">sum(decode(survey_value,sur_times,null)) giveup_times,--调查值 -1:未处理 0:用户放弃 1:很满意 2.满意 3.对csr不满意 4.对其它不满意

sum(sur_times) sur_times

group by

subslevelid,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;">servicereqid,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;">servicereqname,l

方法二:

create table testTable (

id nvarchar2(200) primary key not null,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;"> content nvarchar2(200) not null

)

insert into testTable values ('4','馆内idx_10馆外idx_11总体idx_12');

select * from table ( CAST (fn_split(('馆内idx_1$馆外idx_2$总体idx_3$'),'$') as ty_str_split ) )

select * from testtable b left join table (fn_split((content),'$') ) a on 1=1;

--实现split函数

CREATE OR REPLACE TYPE ty_str_split IS TABLE OF VARCHAR2 (4000);

CREATE OR REPLACE FUNCTION fn_split (p_str IN VARCHAR2,p_delimiter IN VARCHAR2)

RETURN ty_str_split

j INT := 0;

i INT := 1;

len INT := 0;

len1 INT := 0;

str VARCHAR2 (4000);

str_split ty_str_split := ty_str_split ();

BEGIN

len := LENGTH (p_str);

len1 := LENGTH (p_delimiter);

WHILE j < len

LOOP

j := INSTR (p_str,p_delimiter,i);

IF j = 0

THEN

j := len;

str := SUBSTR (p_str,51);font-family:Simsun;font-size:14px;font-style:normal;font-variant:normal;font-weight:400;letter-spacing:normal;list-style-image:none;list-style-position:outside;list-style-type:none;margin-left:0px;text-align:left;text-decoration:none;text-indent:28px;text-transform:none;word-spacing:0px;"> str_split.EXTEND;

str_split (str_split.COUNT) := str;

IF i >= len

THEN

EXIT;

END IF;

ELSE

i := j + len1;

END IF;

END LOOP;

RETURN str_split;

END fn_split;

DECLARE

CURSOR c

r c%ROWTYPE;

OPEN c;

FETCH c INTO r;

EXIT WHEN c%NOTFOUND;

DBMS_OUTPUT.put_line (r.column_value);

CLOSE c;

END;

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oralce逗号分割变多行

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