Sql 从嵌套引用表中选择查询
我有两个对象关系表:Sql 从嵌套引用表中选择查询,sql,oracle,user-defined-types,nested-table,object-relational-model,Sql,Oracle,User Defined Types,Nested Table,Object Relational Model,我有两个对象关系表:person\u table和account\u table,由对象person和account构建。 帐户行具有用于共享此帐户的所有人员的嵌套表,其类型为“customer_list” create type person as object( id integer, name varchar2, phone varchar2 ); create type customer_list as table of ref person; create type
person\u table
和account\u table
,由对象person
和account
构建。
帐户行具有用于共享此帐户的所有人员的嵌套表,其类型为“customer_list”
create type person as object(
id integer,
name varchar2,
phone varchar2
);
create type customer_list as table of ref person;
create type account as object(
accid integer,
owned_by customer_list,
balance Integer
);
create table account_table of account;
create table person_table of person;
我想选择特定人员拥有的所有帐户,给定该人员的id。如何浏览所有嵌套的帐户表,查询是什么?我尝试了不成功的查询
比如说
select a.*
from account_table a
where table(a.owned_by) = (select ref(p) from person_table p where p.id=id_given);
谢谢这是我的测试数据:
SQL> select * from person_table;
ID NAME PHONE
---------- ------------------------------ ------------
11 MR KNOX 07000700811
22 SAM-I-AM 07000700822
SQL> select * from account_table;
ACCID
----------
OWNED_BY
--------------------------------------------------------------------------------
BALANCE
----------
123
CUSTOMER_LIST(00002202084B026AE209637509E050007F010047FD4B026AE209627509E050007F010047FD
, 00002202084B026AE209647509E050007F010047FD4B026AE209627509E050007F010047FD)
9900
345
CUSTOMER_LIST(00002202084B026AE209637509E050007F010047FD4B026AE209627509E050007F010047FD)
30
SQL>
Sam-I-Am和Knox先生是第一个账户的共同所有者,Knox先生是第二个账户的唯一所有者。要查找Knox先生拥有的帐户,我们可以运行此查询,它从person\u表
中查找REF
SQL> select acct.accid
2 , acct.balance
3 , deref(value(ob)).name as owned_by
4 , deref(value(ob)).phone as ntact_noco
5 from account_table acct
6 cross join table(acct.owned_by) ob
7 where ob.column_value = ( select ref(p) pref
8 from person_table p
9 where p.name = 'MR KNOX')
10 /
ACCID BALANCE OWNED_BY NTACT_NOCO
---------- ---------- ------------------------------ ------------
123 9900 MR KNOX 07000700811
345 30 MR KNOX 07000700811
SQL>
或者,我们可以使用DEREF语法查找此人:
SQL> select acct.accid
2 , acct.balance
3 , deref(value(ob)).name as owned_by
4 , deref(value(ob)).phone as contact_no
5 from account_table acct
6 cross join table(acct.owned_by) ob
7 where deref(value(ob)).id = 11
8 /
ACCID BALANCE OWNED_BY CONTACT_NO
---------- ---------- ------------------------------ ------------
123 9900 MR KNOX 07000700811
345 30 MR KNOX 07000700811
SQL>
我编辑了你的问题以使对象名称标准化。