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我尝试使用check option.
当我在过滤条件中有连接时，我使用一个where in子句来简化查询。但是，如果我同时使用and
声明视图，则数据验证似乎不可靠。我在文档中没有看到这个限制：https ://www.postgresql.org/docs/current/sql-createview.htmlcheck optionwhere in

它是一个错误吗？有解决方法吗？

create table tableA (
    db_record_id serial NOT null PRIMARY KEY,
    "name" varchar(60) NOT null UNIQUE
);

create or replace view viewSimpleA
as select * from tableA where name like 'a%'
with check option;

create or replace view viewA
as select * from tableA
where db_record_id in (
    select db_record_id from tableA
    where name like 'a%'
) with check option;

insert into viewSimpleA(name) values('abc'); -- OK
delete from tableA;

insert into viewA(name) values('abc'); -- KO, SQL Error [44000]: ERROR: new row violates check option for view "viewa"
delete from tableA;

insert into viewSimpleA(name) values('abc');
update viewSimpleA set name = 'fine'; -- OK: update is prevented by check option
delete from tableA;

insert table viewA(name) values('abc');
update viewA set name = 'fine'; -- KO: update is executed, view is now empty
delete from tableA;

select version(); -- PostgreSQL 13.5 (Debian 13.5-1.pgdg110+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 10.2.1-6) 10.2.1 20210110, 64-bit

编辑：我在这里创建了一个错误报告

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1 回答 1

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PostGreSQL 不支持在由多个表构成的视图中插入/更新/删除。这包括 JOIN 和子查询。

于 2021-12-15T11:29:36.470 回答