pg_stat_all_indexes

显示有关每个索引访问统计信息的视图

pg_stat_all_indexes 是一个统计视图，用于显示当前数据库中每个索引的访问统计信息。

pg_stat_all_indexes 在 PostgreSQL 7.2 中添加。

按 PostgreSQL 版本定义

pg_stat_all_indexes (PostgreSQL 19)

                   View "pg_catalog.pg_stat_all_indexes"
    Column     |           Type           | Collation | Nullable | Default 
---------------+--------------------------+-----------+----------+---------
 relid         | oid                      |           |          | 
 indexrelid    | oid                      |           |          | 
 schemaname    | name                     |           |          | 
 relname       | name                     |           |          | 
 indexrelname  | name                     |           |          | 
 idx_scan      | bigint                   |           |          | 
 last_idx_scan | timestamp with time zone |           |          | 
 idx_tup_read  | bigint                   |           |          | 
 idx_tup_fetch | bigint                   |           |          |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 18)

                   View "pg_catalog.pg_stat_all_indexes"
    Column     |           Type           | Collation | Nullable | Default 
---------------+--------------------------+-----------+----------+---------
 relid         | oid                      |           |          | 
 indexrelid    | oid                      |           |          | 
 schemaname    | name                     |           |          | 
 relname       | name                     |           |          | 
 indexrelname  | name                     |           |          | 
 idx_scan      | bigint                   |           |          | 
 last_idx_scan | timestamp with time zone |           |          | 
 idx_tup_read  | bigint                   |           |          | 
 idx_tup_fetch | bigint                   |           |          |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 17)

                   View "pg_catalog.pg_stat_all_indexes"
    Column     |           Type           | Collation | Nullable | Default 
---------------+--------------------------+-----------+----------+---------
 relid         | oid                      |           |          | 
 indexrelid    | oid                      |           |          | 
 schemaname    | name                     |           |          | 
 relname       | name                     |           |          | 
 indexrelname  | name                     |           |          | 
 idx_scan      | bigint                   |           |          | 
 last_idx_scan | timestamp with time zone |           |          | 
 idx_tup_read  | bigint                   |           |          | 
 idx_tup_fetch | bigint                   |           |          |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 16)

                   View "pg_catalog.pg_stat_all_indexes"
    Column     |           Type           | Collation | Nullable | Default 
---------------+--------------------------+-----------+----------+---------
 relid         | oid                      |           |          | 
 indexrelid    | oid                      |           |          | 
 schemaname    | name                     |           |          | 
 relname       | name                     |           |          | 
 indexrelname  | name                     |           |          | 
 idx_scan      | bigint                   |           |          | 
 last_idx_scan | timestamp with time zone |           |          | 
 idx_tup_read  | bigint                   |           |          | 
 idx_tup_fetch | bigint                   |           |          |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 15)

          View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Collation | Nullable | Default 
---------------+--------+-----------+----------+---------
 relid         | oid    |           |          | 
 indexrelid    | oid    |           |          | 
 schemaname    | name   |           |          | 
 relname       | name   |           |          | 
 indexrelname  | name   |           |          | 
 idx_scan      | bigint |           |          | 
 idx_tup_read  | bigint |           |          | 
 idx_tup_fetch | bigint |           |          |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 14)

          View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Collation | Nullable | Default 
---------------+--------+-----------+----------+---------
 relid         | oid    |           |          | 
 indexrelid    | oid    |           |          | 
 schemaname    | name   |           |          | 
 relname       | name   |           |          | 
 indexrelname  | name   |           |          | 
 idx_scan      | bigint |           |          | 
 idx_tup_read  | bigint |           |          | 
 idx_tup_fetch | bigint |           |          |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 13)

          View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Collation | Nullable | Default 
---------------+--------+-----------+----------+---------
 relid         | oid    |           |          | 
 indexrelid    | oid    |           |          | 
 schemaname    | name   |           |          | 
 relname       | name   |           |          | 
 indexrelname  | name   |           |          | 
 idx_scan      | bigint |           |          | 
 idx_tup_read  | bigint |           |          | 
 idx_tup_fetch | bigint |           |          |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 12)

          View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Collation | Nullable | Default 
---------------+--------+-----------+----------+---------
 relid         | oid    |           |          | 
 indexrelid    | oid    |           |          | 
 schemaname    | name   |           |          | 
 relname       | name   |           |          | 
 indexrelname  | name   |           |          | 
 idx_scan      | bigint |           |          | 
 idx_tup_read  | bigint |           |          | 
 idx_tup_fetch | bigint |           |          |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 11)

          View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Collation | Nullable | Default 
---------------+--------+-----------+----------+---------
 relid         | oid    |           |          | 
 indexrelid    | oid    |           |          | 
 schemaname    | name   |           |          | 
 relname       | name   |           |          | 
 indexrelname  | name   |           |          | 
 idx_scan      | bigint |           |          | 
 idx_tup_read  | bigint |           |          | 
 idx_tup_fetch | bigint |           |          |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 10)

          View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Collation | Nullable | Default 
---------------+--------+-----------+----------+---------
 relid         | oid    |           |          | 
 indexrelid    | oid    |           |          | 
 schemaname    | name   |           |          | 
 relname       | name   |           |          | 
 indexrelname  | name   |           |          | 
 idx_scan      | bigint |           |          | 
 idx_tup_read  | bigint |           |          | 
 idx_tup_fetch | bigint |           |          |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 9.6)

View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Modifiers 
---------------+--------+-----------
 relid         | oid    | 
 indexrelid    | oid    | 
 schemaname    | name   | 
 relname       | name   | 
 indexrelname  | name   | 
 idx_scan      | bigint | 
 idx_tup_read  | bigint | 
 idx_tup_fetch | bigint |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 9.5)

View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Modifiers 
---------------+--------+-----------
 relid         | oid    | 
 indexrelid    | oid    | 
 schemaname    | name   | 
 relname       | name   | 
 indexrelname  | name   | 
 idx_scan      | bigint | 
 idx_tup_read  | bigint | 
 idx_tup_fetch | bigint |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 9.4)

View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Modifiers 
---------------+--------+-----------
 relid         | oid    | 
 indexrelid    | oid    | 
 schemaname    | name   | 
 relname       | name   | 
 indexrelname  | name   | 
 idx_scan      | bigint | 
 idx_tup_read  | bigint | 
 idx_tup_fetch | bigint |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 9.3)

View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Modifiers 
---------------+--------+-----------
 relid         | oid    | 
 indexrelid    | oid    | 
 schemaname    | name   | 
 relname       | name   | 
 indexrelname  | name   | 
 idx_scan      | bigint | 
 idx_tup_read  | bigint | 
 idx_tup_fetch | bigint |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 9.2)

View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Modifiers 
---------------+--------+-----------
 relid         | oid    | 
 indexrelid    | oid    | 
 schemaname    | name   | 
 relname       | name   | 
 indexrelname  | name   | 
 idx_scan      | bigint | 
 idx_tup_read  | bigint | 
 idx_tup_fetch | bigint |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 9.1)

View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Modifiers 
---------------+--------+-----------
 relid         | oid    | 
 indexrelid    | oid    | 
 schemaname    | name   | 
 relname       | name   | 
 indexrelname  | name   | 
 idx_scan      | bigint | 
 idx_tup_read  | bigint | 
 idx_tup_fetch | bigint |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 9.0)

View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Modifiers 
---------------+--------+-----------
 relid         | oid    | 
 indexrelid    | oid    | 
 schemaname    | name   | 
 relname       | name   | 
 indexrelname  | name   | 
 idx_scan      | bigint | 
 idx_tup_read  | bigint | 
 idx_tup_fetch | bigint |

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 8.4)

View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Modifiers 
---------------+--------+-----------
 relid         | oid    | 
 indexrelid    | oid    | 
 schemaname    | name   | 
 relname       | name   | 
 indexrelname  | name   | 
 idx_scan      | bigint | 
 idx_tup_read  | bigint | 
 idx_tup_fetch | bigint | 
View definition:
 SELECT c.oid AS relid, i.oid AS indexrelid, n.nspname AS schemaname, c.relname, i.relname AS indexrelname, pg_stat_get_numscans(i.oid) AS idx_scan, pg_stat_get_tuples_returned(i.oid) AS idx_tup_read, pg_stat_get_tuples_fetched(i.oid) AS idx_tup_fetch
   FROM pg_class c
   JOIN pg_index x ON c.oid = x.indrelid
   JOIN pg_class i ON i.oid = x.indexrelid
   LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
  WHERE c.relkind = ANY (ARRAY['r'::"char", 't'::"char"]);

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 8.3)

View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Modifiers 
---------------+--------+-----------
 relid         | oid    | 
 indexrelid    | oid    | 
 schemaname    | name   | 
 relname       | name   | 
 indexrelname  | name   | 
 idx_scan      | bigint | 
 idx_tup_read  | bigint | 
 idx_tup_fetch | bigint | 
View definition:
 SELECT c.oid AS relid, i.oid AS indexrelid, n.nspname AS schemaname, c.relname, i.relname AS indexrelname, pg_stat_get_numscans(i.oid) AS idx_scan, pg_stat_get_tuples_returned(i.oid) AS idx_tup_read, pg_stat_get_tuples_fetched(i.oid) AS idx_tup_fetch
   FROM pg_class c
   JOIN pg_index x ON c.oid = x.indrelid
   JOIN pg_class i ON i.oid = x.indexrelid
   LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
  WHERE c.relkind = ANY (ARRAY['r'::"char", 't'::"char"]);

文档: pg_stat_all_indexes

pg_stat_all_indexes (PostgreSQL 8.2)

View "pg_catalog.pg_stat_all_indexes"
    Column     |  Type  | Modifiers 
---------------+--------+-----------
 relid         | oid    | 
 indexrelid    | oid    | 
 schemaname    | name   | 
 relname       | name   | 
 indexrelname  | name   | 
 idx_scan      | bigint | 
 idx_tup_read  | bigint | 
 idx_tup_fetch | bigint | 
View definition:
 SELECT c.oid AS relid, i.oid AS indexrelid, n.nspname AS schemaname, c.relname, i.relname AS indexrelname, pg_stat_get_numscans(i.oid) AS idx_scan, pg_stat_get_tuples_returned(i.oid) AS idx_tup_read, pg_stat_get_tuples_fetched(i.oid) AS idx_tup_fetch
   FROM pg_class c
   JOIN pg_index x ON c.oid = x.indrelid
   JOIN pg_class i ON i.oid = x.indexrelid
   LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
  WHERE c.relkind = ANY (ARRAY['r'::"char", 't'::"char"]);

文档: pg_stat_all_indexes

变更历史

PostgreSQL 19
- 添加了列 stats_reset （提交 a5b54325）
PostgreSQL 16
- 添加了 last_idx_scan 列（提交 c0374718）
PostgreSQL 7.2
- 添加 (提交 8d80b0d9)

示例

pg_stat_all_indexes 记录的示例内容

postgres=# SELECT * FROM pg_stat_all_indexes WHERE idx_scan > 0 LIMIT 1\gx
-[ RECORD 1 ]-+---------------------------------
relid         | 2619
indexrelid    | 2696
schemaname    | pg_catalog
relname       | pg_statistic
indexrelname  | pg_statistic_relid_att_inh_index
idx_scan      | 56826314
idx_tup_read  | 285116312
idx_tup_fetch | 30899327

参考资料

PostgreSQL 文档: pg_stat_all_indexes

有用链接

PostgreSQL 有效监控：在 PostgreSQL 16 中利用 pg_stat_all_tables 和 pg_stat_all_indexes 视图 - 2023 年 7 月 Dave Page / EnterpriseDB 的博客文章

另请参阅

pg_stat_user_indexes, pg_stat_sys_indexes, pg_statio_all_indexes, pg_statio_sys_indexes, pg_statio_user_indexes, pg_stat_all_tables

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版本图表

实用概述

有用链接

咖啡

目录

pg_stat_all_indexes

按 PostgreSQL 版本定义

pg_stat_all_indexes (PostgreSQL 19)

pg_stat_all_indexes (PostgreSQL 18)

pg_stat_all_indexes (PostgreSQL 17)

pg_stat_all_indexes (PostgreSQL 16)

pg_stat_all_indexes (PostgreSQL 15)

pg_stat_all_indexes (PostgreSQL 14)

pg_stat_all_indexes (PostgreSQL 13)

pg_stat_all_indexes (PostgreSQL 12)

pg_stat_all_indexes (PostgreSQL 11)

pg_stat_all_indexes (PostgreSQL 10)

pg_stat_all_indexes (PostgreSQL 9.6)

pg_stat_all_indexes (PostgreSQL 9.5)

pg_stat_all_indexes (PostgreSQL 9.4)

pg_stat_all_indexes (PostgreSQL 9.3)

pg_stat_all_indexes (PostgreSQL 9.2)

pg_stat_all_indexes (PostgreSQL 9.1)

pg_stat_all_indexes (PostgreSQL 9.0)

pg_stat_all_indexes (PostgreSQL 8.4)

pg_stat_all_indexes (PostgreSQL 8.3)

pg_stat_all_indexes (PostgreSQL 8.2)

变更历史

示例

参考资料

有用链接

分类

另请参阅

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