oracle-从一个表将数据插入到另一个表、自动插入序列、表数据结构不同

阅读更多

--临时表结构



create table RECOMMEND_SERVICE_TMP
(
  ID                NUMBER not null,
  MEMBER_ID         NUMBER not null,
  COMPANY_ID        NUMBER not null,
  RECOMMEND_SERVICE NUMBER not null
)
tablespace USERS
  pctfree 10
  initrans 1
  maxtrans 255
  storage
  (
    initial 64K
    minextents 1
    maxextents unlimited
  );


--插入数据表结构

create table RECOMMEND_SERVICE
(
  ID                NUMBER not null,
  GMT_CREATE        DATE not null,
  GMT_MODIFIED      DATE not null,
  MEMBER_ID         NUMBER not null,
  COMPANY_ID        NUMBER not null,
  RECOMMEND_SERVICE NUMBER not null
)
tablespace USERS
  pctfree 10
  initrans 1
  maxtrans 255
  storage
  (
    initial 64K
    minextents 1
    maxextents unlimited
  );


--数据

insert into RECOMMEND_SERVICE_TMP (ID, MEMBER_ID, COMPANY_ID, RECOMMEND_SERVICE)
values (1, 1, 1, 1);
insert into RECOMMEND_SERVICE_TMP (ID, MEMBER_ID, COMPANY_ID, RECOMMEND_SERVICE)
values (2, 2, 2, 2);
insert into RECOMMEND_SERVICE_TMP (ID, MEMBER_ID, COMPANY_ID, RECOMMEND_SERVICE)
values (3, 3, 3, 3);
insert into RECOMMEND_SERVICE_TMP (ID, MEMBER_ID, COMPANY_ID, RECOMMEND_SERVICE)
values (4, 4, 4, 4);
insert into RECOMMEND_SERVICE_TMP (ID, MEMBER_ID, COMPANY_ID, RECOMMEND_SERVICE)
values (5, 5, 5, 5);
commit;

--插入sql语句

insert into recommend_service
  (id, gmt_create, gmt_modified, member_id, company_id, recommend_service)
  (select seq_xm_test001.nextval as id,
          sysdate,
          sysdate,
          member_id,
          company_id,
          recommend_service
     from recommend_service_tmp)


--取系统时间和序列

  select seq_bureau_test_req_id.nextval as id from dual; -- 通过系统表(dual)一次只能取出一个序列
  select seq_bureau_test_req_id.nextval as id from mail; -- 通过用户自定义的表(mail) 取序列，则表中有多少条数据就可以取多少个序列
  select  sysdate  from files;  --files是用户创建的任意一张表=,表中不包含sysdate字段