DROP USER nameDROP VIEW删除一个视图。DROP VIEW name [, ...] [ CASCADE | RESTRICT ]END提交当前的事务。END [ WORK | TRANSACTION ]EXECUTE执行一个准备好的查询。EXECUTE plan_name [ (parameter [, ...] ) ]EXPLAIN显示一个语句的执行规划。EXPLAIN
User1执行了GRANT SELECT ON ALL TABLES IN SCHEMA public TO User2;语句对User2授予了publicSchema中所有表的SELECT权限。 User1在publicSchema中创建了一张新表table_new。 User2执行SELECT * FROM table_new语句时显示报错Permission denied。 由于User1对User2授予SELECT权限时,仅包含授权时刻publicSchema中的所有...
or DELETE operations.INSTEAD OF triggers are fired once for each row that needs to be modified in the view.It is the responsibility of the trigger's function to perform the necessary modifications to the underlying base tables and, where appropriate, return the modified row as it will appear ...
public | cities1 | table | postgres public | myview | view | postgres public | weather | table | postgres postgres=# select * from test1.a; #加上模式,能访问到表a id --- (0 rows) postgres=# show search_path; #查看模式,搜索路径 search_path --- "$user", public (1 row) postgr...
pg_read_all_stats|3375|{3373} pg_stat_scan_tables|3377|{3373} pg_signal_backend|4200|{} (5行记录) 还有 角色(ROLE) 的概念: postgres=# \h create role 命令: CREATE ROLE 描述: 定义一个新数据库角色 语法: CREATE ROLE 名称 [ [ WITH ] 选项 [ ... ] ] ...
-singleDataFile Use single SQL file for offline data storage for all tables. This option cannot be used in COPY format. -allUsers 从源数据库导入所有用户和角色。 -users LIST 从源数据库导入选定用户/角色。LIST 是一个用逗号分隔的用户/角色名称列表,如 -users MTK,SAMPLE ...
with external editor \ef [FUNCNAME [LINE]] edit function definition with external editor...Informational (options: S = show system objects, + = additional detail) \d[S+] list tables, views, and sequences \d[S+] NAME describe table, view, sequence, or index \da[S] ...
SQL>select * from user_tables; 另:select * from all_tables; 其他用户所拥有的表 另:select * from dba_tables;数据库中所有用户的表 8、查看scott用户已经使用多大的空间,允许使用的最大空间是多少 SQL> select tablespace_name,bytes,max_bytes from user_ts_quotas; ...
pg_read_all_stats pg_stat_scan_tables pg_read_server_files pg_write_server_files pg_execute_server_program pg_signal_backend(9rows)Time:0.955ms 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 但它确实是存在的,它默认拥有: ...
-- View with readable locks info and filtered out locks on system tables CREATE VIEW active_locks AS SELECT clock_timestamp(), pg_class.relname, pg_locks.locktype, pg_locks.database, pg_locks.relation, pg_locks.page, pg_locks.tuple, pg_locks.virtualtransaction, ...