oracle存储过程怎样批量插入新数据

Posted 2023-05-15

参考技术A 需要生成的SQL
insert into TMP_UPSTATE_CASEKEY values('TMP0000001', 1, sysdate);

存储过程实现
create or replace procedure proc_casekey_upstate
as
casekey char(14);
begin
for i in 1..10000000 loop
casekey := 'TMP'||lpad(i,7,0); -- TMP0000001
insert into TMP_UPSTATE_CASEKEY values(casekey, 1, sysdate);
end loop;
commit;
end;

begin
proc_casekey_upstate();
end;

测试发现生成一千万条数据用了14分钟左右，性能还是可以了，如果先去掉TMP_NUM_STATUS_ID的外键估计更快。
或者：
insert into TMP_UPSTATE_CASEKEY select 'TMP'||LPAD(rownum,7,0),1,sysdate from dual connect by level <= 1000000; 参考技术B 这里面涉及到字符串的定义，怎么确定字符串？你是指一个单词还是一整行？如果是一整行，只要不断调用fgets函数，返回的就是一行一行的字符串，但是如果是单词的话，就复杂了，需要进行词法分析，据我估计这个题目是指一整行，代码其实很简单：#include <stdio.h>
#define MAX_LINE 1024
char *fname="a.txt";
main()
FILE * f;
char line[MAX_LINE];
int i;
f=fopen(fname,"r");
if(f==NULL)

perror("fopen");
return 1;

i=0;
while(fgets(line,MAX_LINE,f)!=NULL)

printf("%s",line);
i++;

fclose(f);
printf("filename:%s has %d Strings!",fname,i);

Oracle 定时查询数据插入新表中（job+存储过程）

create table EGMAS_COUNT_DATA
(
TIMES       date not null,
COUNT NUMBER(30) not null,
SYSTEM_NAME VARCHAR2(30) not null,
Operation_index VARCHAR2(30) not null
);
-- Add comments to the columns
comment on column EGMAS_COUNT_DATA.TIMES
is ‘日期‘;
comment on column EGMAS_COUNT_DATA.COUNT
is ‘统计量‘;
comment on column EGMAS_COUNT_DATA.SYSTEM_NAME
is ‘系统编码‘;
comment on column EGMAS_COUNT_DATA.Operation_index
is ‘业务运营指标名称‘;

存储过程：

create or replace procedure orderCount is

  begin

   

    insert into EGMAS_COUNT_DATA(DAY, COUNT,SYSTEM_NAME,Operation_index)

    SELECT to_date(to_char(sysdate-1,‘yyyy-MM-dd‘),‘yyyy-MM-dd‘), (select count(1) from T_ORDERS WHERE ORDER_RESOURCE = ‘13‘

    AND to_char(CREATED_TM,‘yyyy-MM-dd‘) = to_char(sysdate-1,‘yyyy-MM-dd‘)), ‘EGMAS‘,‘Android手机订单量(港澳台)‘

    FROM dual;

    insert into EGMAS_COUNT_DATA(DAY, COUNT,SYSTEM_NAME,Operation_index)

    SELECT to_date(to_char(sysdate-1,‘yyyy-MM-dd‘),‘yyyy-MM-dd‘), (select count(1) from T_ORDERS WHERE ORDER_RESOURCE = ‘14‘

    AND to_char(CREATED_TM,‘yyyy-MM-dd‘) = to_char(sysdate-1,‘yyyy-MM-dd‘)), ‘EGMAS‘,‘IPHONE手机订单量(港澳台)‘

    FROM dual;

    insert into EGMAS_COUNT_DATA(DAY, COUNT,SYSTEM_NAME,Operation_index)

    SELECT to_date(to_char(sysdate-1,‘yyyy-MM-dd‘),‘yyyy-MM-dd‘), (select count(1) from T_ORDERS WHERE

    to_char(CREATED_TM,‘yyyy-MM-dd‘) = to_char(sysdate-1,‘yyyy-MM-dd‘)), ‘EGMAS‘,‘速运通订单量(港澳台)‘

    FROM dual;

    commit;

  end orderCount;

/

 

设置job执行时间：

         variable jobno number;

begin

  dbms_job.submit(:jobno,‘orderCount;‘, sysdate, ‘TRUNC(sysdate+1)+1/24‘);

end;

/

 

启动job：

 

begin

dbms_job.run(44);

commit;

end;

/

 

查看job是否存在：

select job, next_date, next_sec, failures, broken from user_jobs;