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数据库-视图（从其他服务器获取视图或者表内容，copy到自己数据库作为新的视图）

2022-01-19 18:02:13 阅读：172 来源： 互联网

标签：resource sr 数据库 character rcr 视图 varying join copy

当我们数据库非常多，分布在不同的服务器上，此时有一个系统需要使用其他系统的数据库时，这个时候，直接用数据库视图比建库建表建视图方便的多，给个示例，记录下：

SELECT t.resourceid,
t.resourcename,
t.resourcealias,
t.resourcetype,
t.resourceurl,
t.groupid,
t.requesttype,
t.resourcedes,
t.resourceproxyurl
FROM dblink('dbname=resourceregister_cp hostaddr=192.9.30.27 port=5432 user=postgres password=postgres'::text, 'select distinct serviceid as resourceid,servicename as resourcename,servicealias as resourcealias,servicetype as resourcetype,serverurl as resourceurl, rcr.resourcegroupid as groupid ,''get'' as requesttype,description as resourcedes, serverurl_out as resourceproxyurl
from dbms_data_service ds inner join dbms_rea_catalog_resource rcr on ds.serviceid = rcr.resourceid
inner join share_resource sr on sr.sourceid=ds.serviceid and sr.audit_status=''1''
union all
select distinct interfaceid as resourceid,interfacename as resourcename,interfacealias as resourcealias,interfacetype as resourcetype,interfaceurl as resourceurl, rcr.resourcegroupid as groupid ,''get'' as requesttype,interfacedescription as resourcedes,interfaceproxyurl as resourceproxyurl
from dbms_data_interface di inner join dbms_rea_catalog_resource rcr on di.interfaceid = rcr.resourceid
inner join share_resource sr on sr.sourceid=di.interfaceid and sr.audit_status=''1''
union all
select distinct productid as resourceid,productname as resourcename,productalias as resourcealias,producttype as resourcetype,producturl as resourceurl ,rcr.resourcegroupid as groupid ,''get'' as requesttype,productdescription as resourcedes,productproxyurl as resourceproxyurl
from dbms_data_product dp inner join dbms_rea_catalog_resource rcr on dp.productid = rcr.resourceid
inner join share_resource sr on sr.sourceid=dp.productid and sr.audit_status=''1''
union all
select distinct fileid as resourceid,name as resourcename, alias as resourcealias,resourcetype as resourcetype,serverpath as resourceurl,rcr.resourcegroupid as groupid ,''get'' as requesttype,'''' as resourcedes,serverproxypath as resourceproxyurl
from dbms_unstru_file uf inner join dbms_rea_catalog_resource rcr on uf.fileid = rcr.resourceid
inner join share_resource sr on sr.sourceid=uf.fileid and sr.audit_status=''1'''::text) t(resourceid character varying, resourcename character varying, resourcealias character varying, resourcetype character varying, resourceurl character varying, groupid character varying, requesttype character varying, resourcedes character varying, resourceproxyurl character varying)

简化下，格式如下：

SELECT t.id,t.name
FROM dblink('dbname=cp hostaddr=192.9.30.27 port=5432 user=postgres password=postgres'::text, 'select id,name from user'::text) t(id character varying, name character varying)

标签：resource,sr,数据库,character,rcr,视图,varying,join,copy
来源： https://www.cnblogs.com/marissablog/p/15823485.html

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数据库-视图（从其他服务器获取视图或者表内容，copy到自己数据库作为新的视图）