mysql锁查询方式

下面讲讲关于mysql锁查询方式，文字的奥妙在于贴近主题相关。所以，闲话就不谈了，我们直接看下文吧，相信看完mysql锁查询方式这篇文章你一定会有所受益。

select IFNULL(wt.trx_mysql_thread_id,1) BLOCKING_THREAD_ID,

t.trx_mysql_thread_id THREAD_ID,

CONCAT(p.user,'@',p.host) USER,

l.lock_table LOCK_TABLE,

l.lock_index LOCKED_INDEX,

l.lock_type LOCK_TYPE,

l.lock_mode LOCK_MODE,

CONCAT(

FLOOR(HOUR(TIMEDIFF(now(), t.trx_wait_started)) / 24), 'day ',

MOD(HOUR(TIMEDIFF(now(), t.trx_wait_started)), 24), ':',

MINUTE(TIMEDIFF(now(), t.trx_wait_started)), ':',

second(TIMEDIFF(now(), t.trx_wait_started))) AS WAIT_TIME,

t.trx_started TRX_STARTED,

t.trx_isolation_level TRX_ISOLATION_LEVEL,

t.trx_rows_locked TRX_ROWS_LOCKED,

t.trx_rows_modified TRX_ROWS_MODIFIED,

p.info SQL_TEXT

from INFORMATION_SCHEMA.INNODB_TRX t

LEFT JOIN information_schema.innodb_lock_waits w on t.trx_id = w.requesting_trx_id

LEFT JOIN information_schema.innodb_trx wt on wt.trx_id = w.blocking_trx_id

INNER JOIN information_schema.innodb_locks l on l.lock_trx_id = t.trx_id

INNER JOIN information_schema.processlist p on t.trx_mysql_thread_id = p.id

ORDER BY 1

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