sql SHOW OPEN TABLES WHERE In_use > 0; 执行该查询的MySQL客户端或命令行界面示例(可选): 你可以通过MySQL命令行客户端来执行这个查询。首先,你需要登录到MySQL服务器: bash mysql -u your_username -p 输入你的密码后,你将进入MySQL的命令行界面。 然后,选择你想要查询的数据库(如果
# 执行 SQL 查询query="SHOW OPEN TABLES WHERE In_use > 0;"cursor.execute(query)# 获取结果open_tables=cursor.fetchall() 1. 2. 3. 4. 5. 6. 这里的In_use列指的是当前正在使用的表的计数,我们只关心那些其值大于 0 的表。通过执行上述 SQL 查询,返回的结果会被存储在open_tables变量中。 显示...
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SHOW OPEN TABLES语法 SHOW OPEN TABLES [FROM db_name] [LIKE 'pattern'] SHOW OPEN TABLES列举在表缓存中当前被打开的非TEMPORARY表。 SHOW OPEN TABLES会返回以下字段: ·Database 含有该表的数据库。 ·Table 表名称。 ·In_use 表当前被查询使用的次数。如果该数为零,则表是打开的,但是当前没有被使用。
The WHERE clause can be given to select rows using more general conditions, as discussed in Section 24.8, “Extensions to SHOW Statements”. SHOW OPEN TABLES output has these columns: Database The database containing the table. Table The table name. In_use The number of table locks...
One command, which few people realize exists isSHOW OPEN TABLES– it allows you to examine what tables do you have open right now: 1mysql>showopentablesfromtest;2+---+---+---+---+3|Database|Table|In_use|Name_locked|4+---+---+---+---+5|test|a|3|0|6+---+---+---+-...
The WHERE clause can be given to select rows using more general conditions, as discussed in Section 28.8, “Extensions to SHOW Statements”. SHOW OPEN TABLES output has these columns: Database The database containing the table. Table The table name. In_use The number of table locks...
[like_or_where] # 显示指定用户拥有的权限 SHOW GRANTS FOR user # 显示表索引信息(需要先创建索引) SHOW INDEX FROM tbl_name [FROM db_name] # 显示Master当前正在使用的二进制信息 SHOW MASTER STATUS # 列举在表缓存中当前被打开的非TEMPORARY表 SHOW OPEN TABLES [FROM db_name] [like_or_where] #...
show OPEN TABLES where In_use > 0; 这个语句记录当前锁表状态 2.查询进程 show processlist 查询表被锁进程 查询到相应进程kill id 3.分析锁表的SQL 分析相应SQL,给表加索引,常用字段加索引,表关联字段加索引 查看正在锁的事物: SELECT * FROM INFORMATION_SCHEMA.INNODB_LOCKS. ...
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