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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
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
IS
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
IS
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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