实用的sql语句

根据innodb_trx、innodb_locks、innodb_lock_waits得到详细的锁信息

    select r.trx_id waiting_trx_id,r.trx_mysql_thread_id waiting_thread,r.trx_query waiting_query,b.trx_id blocking_trx_id,b.trx_mysql_thread_id blocking_thread,b.trx_query blocking_query from information_schema.innodb_lock_waits w inner join information_schema.innodb_trx b on b.trx_id = w.blocking_trx_id inner join information_schema.innodb_trx r on r.trx_id = w.requesting_trx_id\G

 select * from information_schema.innodb_locks;

 select * from information_schema.innodb_trx;

 select * from information_schema.innodb_lock_waits;