--1.创建一个用户名为readonly密码为ropass的用户 CREATE USER readonly WITH ENCRYPTED PASSWORD 'ropass'; --2.用户只读事务 alter user readonly set default_transaction_read_only=on; ? --3.把所有库的语言的USAGE权限给到readonly GRANT USAGE ON SCHEMA public to readonly; --4.授予select权限(这...
因为我们刚刚创建了这个测试表,所以我们知道它没有触发器并且没有通过外键链接到任何其他表,但我们希望使这个测试尽可能接近实际的表修改,因此我们保留 session_replication_role 修改。 6. 使用函数清理重复行 begin;setlocalsession_replication_role='replica';withgoodrowsas(selectmin(ctid)fromTEST_mytablegroupbyid)...
# linux的默认配置,书上推荐使用csv格式#log_destination = 'stderr' # Valid values are combinations of# stderr, csvlog, jsonlog, syslog, and# eventlog, depending on platform.# csvlog and jsonlog require# logging_collector to be on.# This is used when logging to stderr:logging_collector =...
primary_conninfo = 'user=postgres passfile=''/home/postgres/.pgpass'' channel_binding=disable port=5432 sslmode=disable sslcompression=0 sslsni=1 ssl_min_protocol_version=TLSv1.2 gssencmode=disable krbsrvname=postgres target_session_attrs=any' primary_conninfo = 'user=replicator password=126.com...
ALTER TABLESPACE game READ ONLY; 6.使表空间可读写 ALTER TABLESPACE game READ WRITE; 五、删除表空间 DROP TABLESPACE data01 INCLUDING CONTENTS AND DATAFILES; 六、扩展表空间 首先查看表空间的名字和所属文件 AI检测代码解析 select tablespace_name, file_id, file_name, ...
Make sure the parameter max_wal_senders is set high enough to leave at least one session available for the backup process. Set the parameter wal_level to be higher than minimal. If you are planning to take PAGE backups in the STREAM mode or perform PITR with STREAM backups, you still...
在应用程序视图的上下文中,当前租户对象可以在用户登录时存储为 SESSION 变量, 并且视图操作可以 set_current_tenant 到该值。 有关更多示例,请参阅 django-multitenant 中的 README。 set_current_tenant 函数也可以接受一个对象数组,比如 set_current_tenant([s1, s2, s3]) ...
session_preload_extensions local_preload_extensions Each takes a list of extensions for which to preload shared modules. In addition, another new GUC,local_extensions, will contain a list of administrator-approved extensions users are allowed to include inlocal_preload_extensions. This GUC complements...
transaction_timeout: session termination when the transaction timeout is reached Prohibit the use of ALTER SYSTEM The MAINTAIN privilege and the pg_maintain predefined role Built-in locale provider for C.UTF8 pg_column_toast_chunk_id: ID of the TOAST value pg_basetype function: basic domain ty...
(Relation reln, ForkNumber forkNum, BlockNumber blockNum, ReadBufferMode mode, BufferAccessStrategy strategy) { bool hit; Buffer buf; /* * Reject attempts to read non-local temporary relations; we would be * likely to get wrong data since we have no visibility into the owning * session's...