3循环使用
BEGIN
DECLARE p_name varchar(100);
a number;
BEGIN
a:=1;
loop
select USER_NAME into p_name from U_USER WHERE fullname='xlc';
dbms_output.put_line(p_name||a);
exit WHEN (a=5);
a :=a+1;
END loop;
END;
end;
--4:while 循环
begin
DECLARE p_name varchar(100);
a number;
BEGIN
a:=1;
while (a<=5) loop
select USER_NAME into p_name from U_USER WHERE fullname='xlc';
dbms_output.put_line(p_name||a);
a :=a+1;
END loop;
END;
END;
SELECT user_name from (SELECT ROWNUM as n,u.* from U_USER u) where n <=2
--5:for in 使用cursor
BEGIN
DECLARE p_name VARCHAR(100);
CURSOR culResult is SELECT user_name from (SELECT ROWNUM as n,u.* from U_USER u) where n <=2;
BEGIN
FOR a in culResult loop
BEGIN
p_name :=a.user_name;
dbms_output.put_line(p_name||' ok');
END;
END loop;
END;
END;
**/
http://wenku.baidu.com/link?url=kqIBe8JDBYnE3lLGyan5LzAEgvpHinyZqxrguUE3WNOgNXLx3Na6XQrUZwO_jd6VWTGJ9czS8NEwzhkhfpyzUxWBn36KmJhw8KFz9prM20i
/**
--3循环使用
BEGIN
DECLARE p_name varchar(100);
a number;
BEGIN
a:=1;
loop
select USER_NAME into p_name from U_USER WHERE fullname='xlc';
dbms_output.put_line(p_name||a);
exit WHEN (a=5);
a :=a+1;
END loop;
END;
end;
--4:while 循环
begin
DECLARE p_name varchar(100);
a number;
BEGIN
a:=1;
while (a<=5) loop
select USER_NAME into p_name from U_USER WHERE fullname='xlc';
dbms_output.put_line(p_name||a);
a :=a+1;
END loop;
END;
END;
SELECT user_name from (SELECT ROWNUM as n,u.* from U_USER u) where n <=2
--5:for in 使用cursor
BEGIN
DECLARE p_name VARCHAR(100);
CURSOR culResult is SELECT user_name from (SELECT ROWNUM as n,u.* from U_USER u) where n <=2;
BEGIN
FOR a in culResult loop
BEGIN
p_name :=a.user_name;
dbms_output.put_line(p_name||' ok');
END;
END loop;
END;
END;
**/
1：先执行：创建MD5
CREATE OR REPLACE
FUNCTION MD5(
passwd IN VARCHAR2)
RETURN VARCHAR2
IS
retval varchar2(32);
BEGIN
retval := utl_raw.cast_to_raw(DBMS_OBFUSCATION_TOOLKIT.MD5(INPUT_STRING => passwd)) ;
RETURN retval;
END;
2：删除无效数据
DELETE from U_USER WHERE last_logtime is NULL
3:修复总部员工编号重复
BEGIN
DECLARE
tempSize VARCHAR(20);
i number;
CURSOR user_cur IS
SELECT USER_ID,JOB_NO from U_USER WHERE job_no IN(SELECT JOB_NO FROM CLSPUSER.U_USER GROUP BY JOB_NO HAVING count(1)>1);
c_row user_cur%rowtype;
BEGIN
FOR c_row IN user_cur loop
SELECT max(substr(JOB_NO,length(JOB_NO)-3,length(JOB_NO)))+1 INTO tempSize from U_USER WHERE JOB_NO LIKE 'ZHHQ%';
i:=to_number(length(tempSize));
if(i=1) then
tempSize:='ZHHQ000';
ELSE IF (i=2) THEN
tempSize:='ZHHQ00';
dbms_output.put_line(tempSize);
ELSE if (i=3) then
tempSize:='ZHHQ0';
dbms_output.put_line(tempSize);
end if;
end if;
end if;
--修改
UPDATE U_USER
SET
user_name=(SELECT tempSize|| (max(substr(JOB_NO,length(JOB_NO)-3,length(JOB_NO)))+1) FROM CLSPUSER.U_USER WHERE JOB_NO LIKE 'ZHHQ%'),
password='123456',
passwd_MD5=lower(substr(MD5('123456'), 11, 16)),
job_no=(SELECT 'ZHHQ000'|| (max(substr(JOB_NO,length(JOB_NO)-3,length(JOB_NO)))+1) FROM CLSPUSER.U_USER WHERE JOB_NO LIKE 'ZHHQ%')
WHERE USER_ID=c_row.user_ID;
END loop;
end;
END;
4：在执行批量修改
merge into CLSPUSER.U_USER clsp
using (SELECT emp_no, substr(id_card, length(id_card) - 6, 6) password from SALARYUSER.crf_salary_p2p_emp) sale
ON (clsp.job_no = sale.emp_no)
WHEN matched THEN
UPDATE
SET clsp.user_name = sale.emp_no,
clsp.password = sale.password,
clsp.passwd_md5 = (SELECT lower(substr(MD5(sale.password), 11, 16)) from dual);