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\o [FILE] send all query results to file or |pipe \qecho [STRING] write string to query output stream (see \o) Informational (options: S = show system objects, + = additional detail) \d[S+] list tables, views, and sequences \d[S+] NAME describe table, view, sequence, or index...
[PATTERN] list databases \sf[+] FUNCNAME show a function's definition \sv[+] VIEWNAME show a view's definition \z [PATTERN] same as \dp Formatting \a toggle between unaligned and aligned output mode \C [STRING] set table title, or unset if none \f [STRING] show or set field ...
pg_tablespace_databases(tablespace_oid) setof oid 获取在指定表空间(OID表示)中拥有对象的一套数据库的OID的集合这些函数大多数都有两个变种,其中一个可以选择对结果的"漂亮的打印"。 漂亮打印的格式更容易读,但是缺省的格式更有可能被将来的PostgreSQL版本用同样的方法解释;如果是用于转储,那么尽可能避免使用漂...
PostgreSQL 使用CREATE VIEW语句创建视图:CREATE [OR REPLACE] VIEW view_nameAS select-statement WITH CHECK OPTION;WITH CHECK OPTION 选项可以阻止通过视图修改或者插入视图范围之外的基础表数据。查看所有视图PostgreSQL 系统表 information_schema.views 中存储了关于视图的所有信息:...
\l[+] [PATTERN] list databases \sf[+] FUNCNAME show afunction's definition \sv[+] VIEWNAME show a view's definition \z [PATTERN] same as \dp Formatting \a toggle between unaligned and aligned output mode \C [STRING]settable title, orunsetifnone ...
列举数据库,相当于mysql的show databases 代码语言:javascript 复制 ambari=> \l List of databases Name | Owner | Encoding | Collate | Ctype | Access privileges ---+---+---+---+---+--- ambari | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =Tc/postgres + | | | | | postg...
= current_database() is run for all configured DSN's. From the result a new set of DSN's is created for which the metrics are scraped.In addition, the option --exclude-databases adds the possibily to filter the result from the auto discovery to discard databases you do not need....
Re-run Docker with, "sudo docker-compose -f docker-compose.yml up -d --build" using the development version, so that we can view it locally. When we do this, we get an error, "render_template" is not defined. Basically, we need a render_template function. Evidently render_template ...
databases 逻辑库的数量 默认16 requirepass 密码 默认被注释 建议打开 rdb是内存数据同步到硬盘的数据库文件 有如下操作 save 同步频率 写入包括增删改 save 60 10000 指的是 在 60s 之内 写入了10000条数据就进行同步 save 900 1 指的是900内写入了一条数据都可以进行同步 ...