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DDL_JOBS

The DDL_JOBS table provides an INFORMATION_SCHEMA interface to the ADMIN SHOW DDL JOBS command. It provides both the current status and a short history of DDL operations across the TiDB cluster.

USE information_schema; DESC ddl_jobs;
+--------------+-------------+------+------+---------+-------+ | Field | Type | Null | Key | Default | Extra | +--------------+-------------+------+------+---------+-------+ | JOB_ID | bigint(21) | YES | | NULL | | | DB_NAME | varchar(64) | YES | | NULL | | | TABLE_NAME | varchar(64) | YES | | NULL | | | JOB_TYPE | varchar(64) | YES | | NULL | | | SCHEMA_STATE | varchar(64) | YES | | NULL | | | SCHEMA_ID | bigint(21) | YES | | NULL | | | TABLE_ID | bigint(21) | YES | | NULL | | | ROW_COUNT | bigint(21) | YES | | NULL | | | START_TIME | datetime | YES | | NULL | | | END_TIME | datetime | YES | | NULL | | | STATE | varchar(64) | YES | | NULL | | | QUERY | varchar(64) | YES | | NULL | | +--------------+-------------+------+------+---------+-------+ 12 rows in set (0.00 sec)
SELECT * FROM ddl_jobs LIMIT 3\G
*************************** 1. row *************************** JOB_ID: 44 DB_NAME: mysql TABLE_NAME: opt_rule_blacklist JOB_TYPE: create table SCHEMA_STATE: public SCHEMA_ID: 3 TABLE_ID: 43 ROW_COUNT: 0 START_TIME: 2020-07-06 15:24:27 END_TIME: 2020-07-06 15:24:27 STATE: synced QUERY: CREATE TABLE IF NOT EXISTS mysql.opt_rule_blacklist ( name char(100) NOT NULL ); *************************** 2. row *************************** JOB_ID: 42 DB_NAME: mysql TABLE_NAME: expr_pushdown_blacklist JOB_TYPE: create table SCHEMA_STATE: public SCHEMA_ID: 3 TABLE_ID: 41 ROW_COUNT: 0 START_TIME: 2020-07-06 15:24:27 END_TIME: 2020-07-06 15:24:27 STATE: synced QUERY: CREATE TABLE IF NOT EXISTS mysql.expr_pushdown_blacklist ( name char(100) NOT NULL, store_type char(100) NOT NULL DEFAULT 'tikv,tiflash,tidb', reason varchar(200) ); *************************** 3. row *************************** JOB_ID: 40 DB_NAME: mysql TABLE_NAME: stats_top_n JOB_TYPE: create table SCHEMA_STATE: public SCHEMA_ID: 3 TABLE_ID: 39 ROW_COUNT: 0 START_TIME: 2020-07-06 15:24:26 END_TIME: 2020-07-06 15:24:27 STATE: synced QUERY: CREATE TABLE if not exists mysql.stats_top_n ( table_id bigint(64) NOT NULL, is_index tinyint(2) NOT NULL, hist_id bigint(64) NOT NULL, value longblob, count bigint(64) UNSIGNED NOT NULL, index tbl(table_id, is_index, hist_id) ); 3 rows in set (0.01 sec)

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