SELECTpg_catalog.pg_get_userbyid(d.defaclrole)AS"Granter", n.nspnameAS"Schema",CASEd.defaclobjtypeWHEN'r'THEN'table'WHEN'S'THEN'sequence'WHEN'f'THEN'function'WHEN'T'THEN'type'ENDAS"Type", pg_catalog.array_to_string(d.defaclacl, E', ')AS"Access privileges"FROMpg_catalog.pg_default...
GRANT SELECT ON ALL TABLES IN SCHEMA public:Grants read-only access to every table in the specified schema (here, public). 5. Automate Future Table Permissions To ensure that readonly_user retains read-only access to any new tables created in the future, set default privileges: -- Set defa...
1、XactReadOnly变量对应guc参数transaction_read_only,可以使用show命令查看;但是这个参数是GUC_NO_RESET_ALL类,也就是说不能通过alter system方式修改; 2、如何设置primary实例为只读状态? Alter system set default_transaction_read_only to on;即可 { {'default_transaction_read_only', PGC_USERSET, CLIENT_CO...
alter user username superuser; 就可以获得你要的所有权限,为所欲为。 至于更深层次的为各种 object 进行赋值等,各位看官还是去看官方文档比较合适快速。 另如果想快速获得数据库里面的表中到底有多少用户可以访问这个表并且有什么权限可以键入 \dp 将当前数据库的信息展示,重要的地方在于 access privileges ,同时也...
* If recovery is still in progress, mark this transaction as read-only. * We have lower level defences in XLogInsert and elsewhere to stop us * from modifying data during recovery, but this gives the normal * indication to the user that the transaction is read-only. ...
ERROR:40001:could not serialize access due to read/write dependencies among transactions. 如果会话1访问了Tuple 1并且更新Tuple 2,会话2访问了Tuple 2并且更新Tuple 1,那么会话1先提交成功,而会话2后提交将会报错。 时间1会话1会话2 T1 # begin with Serialization level # begin with Serialization level T2...
1、创建只读角色CREATE ROLE readaccess;2、授予对现有表的访问权限GRANT USAGE ON SCHEMA public TO readaccess;GRANT SELECT ON ALL TABLES IN SCHEMA public TO readaccess;3、授予后面新增表的访问权限ALTER DEFAULT PRIVILEGES IN SCHEMA public 访问权限 ...
https://access.crunchydata.com/documentation/postgres-operator/5.0.3/ PGO是来自Crunchy Data的Postgres Operator,它为您提供了一个声明式 Postgres解决方案,可以自动管理您的PostgreSQL集群。 专为您的 GitOps 工作流程而设计,使用 PGO 在 Kubernetes 上使用 Postgres很容易。片刻之内,您就可以拥有一个完整的生产级...
名为$user的schema由SESSION_USER决定 如果pg_catalog不在path中则会最先查找它,如果在path中则按照指定顺序查找 第1、2点即如前面所示,但PostgreSQL在对第3点的实现上出现了Design Error(securityfocus的分类),造成了代码执行漏洞。 利用方式 在Postgres的commit记录中,有如下commit: ...
This final step restores CurrentUserId. - State related to pending REINDEX operations, which prevents access to an index that is currently being rebuilt. To prevent unprincipled deadlocks when running in parallel mode, this code also arranges for the leader and all workers to participate in group...