查看堵塞的SQL

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 ;