TABLE_STORAGE_STATS表提供有关由存储引擎 (TiKV) 存储的表大小的信息。 USE INFORMATION_SCHEMA;DESCTABLE_STORAGE_STATS; 输出结果如下: +---+---+---+---+---+---+|Field|Type|Null|Key|Default|Extra|+---+---+---+---+---+---+|TABLE_SCHEMA|varchar(64)|YES||NULL|||TABLE_NAME|va...
mysql> select TABLE_SIZE from TABLE_STORAGE_STATS where TABLE_NAME='sbtest1' and table_schema='sbtest'; +---+ | TABLE_SIZE | +---+ | 2624 | +---+ 1 row in set (0.00 sec) mysql> select sum(TABLE_SIZE) from TABLE_STORAGE_STATS where table_schema='sbtest'; +---+ | sum(T...
基于INFORMATION_SCHEMA.TABLE_STORAGE_STATS统计 select table_schema,table_name,TABLE_SIZE/1000fromINFORMATION_SCHEMA.TABLE_STORAGE_STATSwhere table_schema='dba_ml';+---+---+---+|table_schema|table_name|TABLE_SIZE/1000|+---+---+---+|ff_ml|melon|164.4330|+---+---+---+ 1. 2. 3....
STATEMENTS_SUMMARY类似于 MySQL 中的 performance_schema 语句摘要。 STATEMENTS_SUMMARY_HISTORY类似于 MySQL 中的 performance_schema 语句摘要历史。 TABLE_STORAGE_STATS提供存储的表的大小的详细信息。 TIDB_HOT_REGIONS提供有关哪些 Region 访问次数最多的统计信息。
###对线上表进行健康度收集,存储到元数据表中###show stats_healthy where db_name='$dbname' and table_name='$table_name';###通过查询收集的表健康度,对健康度低于95%的表进行analyze分析###analyze table '$table_name';2.2 TiDB空间回收优化 业务在使用智汇云 TiDB 集群过程中，经常出现数据删除...
-[`TABLE_STORAGE_STATS`](/information-schema/information-schema-table-storage-stats.md) -[`TIDB_CHECK_CONSTRAINTS`](/information-schema/information-schema-tidb-check-constraints.md) -[`TIDB_HOT_REGIONS_HISTORY`](/information-schema/information-schema-tidb-hot-regions-history.md) ...
"tidb_build_stats_concurrency": "4", "tidb_capture_plan_baselines": "OFF", "tidb_check_mb4_value_in_utf8": "ON", "tidb_checksum_table_concurrency": "4", "tidb_committer_concurrency": "128", "tidb_constraint_check_in_place": "OFF",-"tidb_current_ts": "442484779120328706",+"tidb...
Bug Report Please answer these questions before submitting your issue. Thanks! 1. Minimal reproduce step (Required) // The following example statements executes an error mysql> select table_schema,sum(TABLE_SIZE) from table_storage_stats...
1,"TiDB","SQL Layer",102,"TiKV","KV Engine",203,"PD","Manager",30,4,"TiFLASH","STORAGE",30 1. 首先每行数据都会映射为一个 (Key, Value) 键值对,同时该表有一个 int 类型的主键,所以 RowID 的值即为该主键的值。假设该表的 TableID 为 10,则其存储在 TiKV 上的表数据为: ...
停止自动收集 set global tidb_auto_analyze_end_time ='01:00 +0000'; 即时生效 set global tidb_max_auto_analyze_time =600; 即时生效,在设置之前启动的超过这个时间也被kill; 设置并发参数 set global tidb_build_stats_concurrency=8; 这个变量用来设置 ANALYZE 语句执行时并发度。 执行手工收集 analyze t...