查询MySQL锁等待的语句

select
 'Blocker' role,
    p.id,
    p.user,
    left(p.host, locate(':', p.host) - 1) host,
    tx.trx_id,
    tx.trx_state,
    tx.trx_started,
 timestampdiff(second, tx.trx_started, now()) duration,
 lo.lock_mode,
 lo.lock_type,
 lo.lock_table,
 lo.lock_index,
    tx.trx_query,
    tx.trx_tables_in_use,
    tx.trx_tables_locked,
    tx.trx_rows_locked
from
    information_schema.innodb_trx tx,
    information_schema.innodb_lock_waits lw,
 information_schema.innodb_locks lo,
    information_schema.processlist p
where
    lw.blocking_trx_id = tx.trx_id
 and p.id = tx.trx_mysql_thread_id
 and lo.lock_trx_id = tx.trx_id
union all
select
    'Blockee' role,
    p.id,
    p.user,
    left(p.host, locate(':', p.host) - 1) host,
    tx.trx_id,
    tx.trx_state,
    tx.trx_started,
 timestampdiff(second, tx.trx_started, now()) duration,
 lo.lock_mode,
 lo.lock_type,
 lo.lock_table,
 lo.lock_index,
    tx.trx_query,
    tx.trx_tables_in_use,
    tx.trx_tables_locked,
    tx.trx_rows_locked
from
    information_schema.innodb_trx tx,
    information_schema.innodb_lock_waits lw,
 information_schema.innodb_locks lo,
    information_schema.processlist p
where
    lw.requesting_trx_id = tx.trx_id
 and p.id = tx.trx_mysql_thread_id
 and lo.lock_trx_id = tx.trx_id \G