如何将多个表中的多个行插入到另一个表中？

Question

如何创建将E_PROVIDER_ID值（PROV_ID，PROV_NAME，IDENTITY_ID）插入E_PROVIDER_MAP（其中IDENTITY_ID_TYPE = 125）的插入语句？

我需要插入以将ID表中的值插入到映射表中，以便：

 E_PROVIDER_ID.PROV_ID = E_PROVIDER_MAP.I_PROV E_PROVIDER_ID.E_PROVIDER_ID = E_PROVIDER_ID.IDENTITY_ID E_PROVIDER_ID.E_PROV_NAME = E_PROVIDER_MAP.I_PROV_NAME E_PROVIDER_ID.E_PROV_NAME = E_PROVIDER_MAP.E_PROV_NAME 

-创建ID表

create table E_PROVIDER_ID
(
  PROV_ID          VARCHAR2(50),
  PROV_NAME        VARCHAR2(50),
  ID_LINE#         VARCHAR2(50),
  IDENTITY_TYPE_ID VARCHAR2(50),
  ID_TYPE_NAME     VARCHAR2(50),
  IDENTITY_ID      VARCHAR2(50),
)

-插入值

insert into E_PROVIDER_ID (PROV_ID, PROV_NAME, ID_LINE#, IDENTITY_TYPE_ID, ID_TYPE_NAME, IDENTITY_ID,)
values ('1005232', 'SMITH, BRIAN EDWARD', '5', '125', 'PROVIDER CODE ID', '020621');
insert into E_PROVIDER_ID (PROV_ID, PROV_NAME, ID_LINE#, IDENTITY_TYPE_ID, ID_TYPE_NAME, IDENTITY_ID,)
values ('1003556', 'SMITH, JOHN STUART', '4', '125', 'PROVIDER CODE ID', '026786');
insert into E_PROVIDER_ID (PROV_ID, PROV_NAME, ID_LINE#, IDENTITY_TYPE_ID, ID_TYPE_NAME, IDENTITY_ID,)
values ('1003595', 'SMITH, RICHARD F.', '5', '125', 'PROVIDER CODE ID', '029091');
insert into E_PROVIDER_ID (PROV_ID, PROV_NAME, ID_LINE#, IDENTITY_TYPE_ID, ID_TYPE_NAME, IDENTITY_ID,)
values ('1003602', 'SMITH, PAUL MATTHEW', '5', '125', 'PROVIDER CODE ID', '029761');
insert into E_PROVIDER_ID (PROV_ID, PROV_NAME, ID_LINE#, IDENTITY_TYPE_ID, ID_TYPE_NAME, IDENTITY_ID,)
values ('1003769', 'SMITH, MARC DROR', '4', '125', 'PROVIDER CODE ID', '029748');
insert into E_PROVIDER_ID (PROV_ID, PROV_NAME, ID_LINE#, IDENTITY_TYPE_ID, ID_TYPE_NAME, IDENTITY_ID,)
values ('1006776', 'SMITH, ULA V.', '6', '125', 'PROVIDER CODE ID', '034415');
insert into E_PROVIDER_ID (PROV_ID, PROV_NAME, ID_LINE#, IDENTITY_TYPE_ID, ID_TYPE_NAME, IDENTITY_ID,)
values ('1006946', 'SMITH, TIMOTHY P.', '7', '125', 'PROVIDER CODE ID', '034687');
insert into E_PROVIDER_ID (PROV_ID, PROV_NAME, ID_LINE#, IDENTITY_TYPE_ID, ID_TYPE_NAME, IDENTITY_ID,)
values ('1007032', 'SMITH, DAVID C.', '7', '125', 'PROVIDER CODE ID', '101754');
commit;

-创建地图表

create table E_PROVIDER_MAP
(
  I_PROV       NUMBER,
  I_PROV_NAME  VARCHAR2(50),
  E_PROV       NUMBER,
  E_PROV_NAME  VARCHAR2(50),
  I_REC_INST   VARCHAR2(8)
)

Answer 1

我认为您只想insert . . . select insert . . . select insert . . . select语法：

insert into E_PROVIDER_MAP(<columns go here>)
    select PROV_ID, PROV_NAME, IDENTITY_ID
    from E_PROVIDER_ID
    where IDENTITY_ID_TYPE = 125;

我不能轻易说出“地图”表的列列表应该是什么。

编辑：

根据您的评论和对问题的修改：

insert into E_PROVIDER_MAP(I_PROV, IDENTITY_ID, I_PROV_NAME, E_PROV_NAME)
    select PROV_ID, E_PROVIDER_ID, E_PROV_NAME, E_PROV_NAME
    from E_PROVIDER_ID
    where IDENTITY_ID_TYPE = 125;

我确实注意到这些列似乎与问题中的create table语句无关。

Answer 2

因为要从具有VARCHAR列的表中进行选择，所以需要使用强制转换进行选择插入。

插入E_PROVIDER_MAP（I_PROV，IDENTITY_ID，I_PROV_NAME，E_PROV_NAME）中，从E_PROVIDER_ID中选择CAST（PROV_ID AS NUMBER），CAST（E_PROV AS NUMBER），I_PROV_NAME，E_PROV_NAME，其中IDENTITY_ID_TYPE = 125;