ALTER SCHEMA NAME 是否影响对 Redshift 中模式的权限授予

Question

如果我更新一个架构，该架构设置有一系列权限以访问具有不同访问权限的其他架构，更新名称会撤消这些授权还是它们会保留在原地？ Redshift 在其文档中将以下内容列为 run an alter schema 的语法，但如果授权会受到影响则不会写入：

ALTER SCHEMA schema_name
{
RENAME TO new_name |
OWNER TO new_owner |
QUOTA { quota [MB | GB | TB] | UNLIMITED }
}

我的假设是现有赠款不会发生变化，但我想在变化生效之前确认一下。

Answer 1

你是对的。更改名称不会更改基础权限。您可以通过确保权限 return 在更改 table 名称之前和之后相同，在新的 /dev 集群中自行测试。但是，更改所有者会影响所有者级别的权限。

CREATE SCHEMA dev;

CREATE TABLE dev.test_table AS (SELECT 1 AS t);

GRANT USAGE ON SCHEMA dev TO “username_here”;

GRANT SELECT ON TABLE dev.test_table TO “username_here”;

SELECT u.usename,
   s.schemaname,
   s.tablename,
   has_table_privilege(u.usename, s.schemaname || ‘.’ || s.tablename, ‘select’) AS user_has_table_select,
   has_schema_privilege(u.usename,s.schemaname,‘create’) AS user_has_schema_create,
   has_schema_privilege(u.usename,s.schemaname,‘usage’) AS user_has_schema_usage
FROM pg_user u
     CROSS JOIN
     (SELECT schemaname, tablename FROM pg_tables) s
WHERE s.schemaname in (‘dev’, ‘uat’)

ALTER SCHEMA dev rename TO uat;

SELECT u.usename,
   s.schemaname,
   s.tablename,
   has_table_privilege(u.usename, s.schemaname || ‘.’ || s.tablename, ‘select’) AS user_has_table_select,
   has_schema_privilege(u.usename,s.schemaname,‘create’) AS user_has_schema_create,
   has_schema_privilege(u.usename,s.schemaname,‘usage’) AS user_has_schema_usage
FROM pg_user u
     CROSS JOIN
     (SELECT schemaname, tablename FROM pg_tables) s
WHERE s.schemaname in (‘dev’, ‘uat’)

ALTER SCHEMA NAME 是否影响对 Redshift 中模式的权限授予

Does ALTER SCHEMA NAME affect permission grants to the schema in Redshift

sql

postgresql

amazon-web-services

database-schema

amazon-redshift