第 53 章 系统目录
目录
- 53.1. 概述
- 53.2.
pg_aggregate - 53.3.
pg_am - 53.4.
pg_amop - 53.5.
pg_amproc - 53.6.
pg_attrdef - 53.7.
pg_attribute - 53.8.
pg_authid - 53.9.
pg_auth_members - 53.10.
pg_cast - 53.11.
pg_class - 53.12.
pg_collation - 53.13.
pg_constraint - 53.14.
pg_conversion - 53.15.
pg_database - 53.16.
pg_db_role_setting - 53.17.
pg_default_acl - 53.18.
pg_depend - 53.19.
pg_description - 53.20.
pg_enum - 53.21.
pg_event_trigger - 53.22.
pg_extension - 53.23.
pg_foreign_data_wrapper - 53.24.
pg_foreign_server - 53.25.
pg_foreign_table - 53.26.
pg_index - 53.27.
pg_inherits - 53.28.
pg_init_privs - 53.29.
pg_language - 53.30.
pg_largeobject - 53.31.
pg_largeobject_metadata - 53.32.
pg_namespace - 53.33.
pg_opclass - 53.34.
pg_operator - 53.35.
pg_opfamily - 53.36.
pg_parameter_acl - 53.37.
pg_partitioned_table - 53.38.
pg_policy - 53.39.
pg_proc - 53.40.
pg_publication - 53.41.
pg_publication_namespace - 53.42.
pg_publication_rel - 53.43.
pg_range - 53.44.
pg_replication_origin - 53.45.
pg_rewrite - 53.46.
pg_seclabel - 53.47.
pg_sequence - 53.48.
pg_shdepend - 53.49.
pg_shdescription - 53.50.
pg_shseclabel - 53.51.
pg_statistic - 53.52.
pg_statistic_ext - 53.53.
pg_statistic_ext_data - 53.54.
pg_subscription - 53.55.
pg_subscription_rel - 53.56.
pg_tablespace - 53.57.
pg_transform - 53.58.
pg_trigger - 53.59.
pg_ts_config - 53.60.
pg_ts_config_map - 53.61.
pg_ts_dict - 53.62.
pg_ts_parser - 53.63.
pg_ts_template - 53.64.
pg_type - 53.65.
pg_user_mapping
系统目录是关系型数据库管理系统存放模式元数据的地方，例如表和列的信息以及内部记账信息。PostgreSQL 的系统目录是普通表。你可以删除并重建这些表、增加列、插入和更新值，并借此把系统严重搞坏。通常，不应手工修改系统目录，通常都有 SQL 命令可用于完成这些操作。（例如，CREATE DATABASE 会向 pg_database 目录中插入一行 — 并且实际上会在磁盘上创建该数据库。）对于某些特别深奥的操作，确实存在少数例外，但随着时间推移，其中很多也已经可以通过 SQL 命令完成，因此直接操纵系统目录的需求正越来越少。
报告文档问题
阅读 上游文档. 通过 PostgreSQL 文档反馈表单.