and then query indexes on the table with either of these queries: SELECT tablename, indexname FROM pg_indexes WHERE tablename='table_name'; -- or SELECT * FROM pg_indexes WHERE tablename='schema_name.table_name'; As an alternative to all the above, you can also use \d: \d table_...
(1 row) -- Now let's list all the tables, indexes, etc. that live in this namespace. blogdb=# select * from pg_class blogdb-# where relnamespace = to_regnamespace('public')::oid; oid | relname | relnamespace | reltype | reloftype | relowner | relam | relfilenode | relta...
PostgreSQL是一种开源的关系型数据库管理系统,它支持多用户访问和并发操作。在PostgreSQL中,可以通过查询系统表来列出特定数据库中所有用户创建的枚举类型。 要列出PostgreSQL中...
在PostgreSQL中,创建索引是提高查询性能的重要手段之一。当执行创建索引命令时,如果命令挂起,可能是由于以下几个原因导致的: 并发操作:如果在创建索引的同时有其他并发操作正在进行,例如插入、更新或删除数据,可能会导致创建索引命令挂起。这是因为创建索引需要对表进行锁定,以确保数据的一致性。在并发操作中,可能存在锁...
\dFp[+] [PATTERN] list text search parsers \dFt[+] [PATTERN] list text search templates \dg[+] [PATTERN] list roles (groups) \dx[+] [PATTERN] list extensions \di[S+] [PATTERN] list indexes \dl list large objects, same as \lo_list ...
It turns out Postgres implements four different types of indexes. You can use them for different types of data and in different situations. Because we didn’t specify USING at all, our index_users_on_name index is a “btree” (or B-Tree) index, the default type. This is our first clu...
通过上述选项可以连接到某个数据库中并进入交互式命令行界面,如果不想进入交互式界面,可以使用-c或者--command直接在Shell中运行数据库指令,使用-l或--list选项列出所有可用的数据库名称,-f或--file选择可以执行本地目录中的一个脚本文件。还可以设定输入input和输出output选项以及输出output的格式,比如-b选项指定...
In the previous articles, we discussed PostgreSQL indexing engine , the interface of access methods , and two access methods: hash index and B-tree . In this article, we will describe GiST indexes. GiST GiST is an abbreviation of "generalized search tree
[PATTERN] list indexes \dl list large objects, same as \lo_list \dL[S+] [PATTERN] list procedural languages \dm[S+] [PATTERN] list materialized views \dn[S+] [PATTERN] list schemas \do[S+] [OPPTRN [TYPEPTRN [TYPEPTRN]]] list operators \dO[S+] [PATTERN] list collations \dp ...
Other data objects won't be replicated to the destination like indexes, permissions. Multiple methods of keeping your data fresh, including Change Data Capture (CDC) and replication using the xmin system column. All available sync modes, providing flexibility in how data is delivered to your ...