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如此简单的删除查询如何导致 MySQL 中的死锁，具体而言，我该怎么办？

DELETE FROM view_offers WHERE view_id = 55

对于表

CREATE TABLE `view_offers` (
  `view_id` int(11) NOT NULL DEFAULT '0',
  `user_id` int(11) DEFAULT NULL,
  `offer_id` bigint(20) unsigned NOT NULL DEFAULT '0',
  `offer_source` int(11) NOT NULL,
  `offer_source_id` bigint(20) unsigned NOT NULL,
  `product_id` bigint(20) unsigned DEFAULT NULL,
  `shop_id` bigint(20) unsigned DEFAULT NULL,
  `category_id` mediumint(8) unsigned DEFAULT NULL,
  `name` varchar(255) DEFAULT NULL,
  `relevance` float NOT NULL DEFAULT '0',
  PRIMARY KEY (`view_id`,`offer_id`),
  KEY `index_view_offers_on_view_id_and_product_id` (`view_id`,`product_id`),
  KEY `index_view_offers_on_view_id_and_shop_id` (`view_id`,`shop_id`),
  KEY `index_view_offers_on_view_id_and_category_id` (`view_id`,`category_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

我知道在编程上下文中死锁本身的概念。如果我以不同的顺序同时锁定多个表，我会理解数据库中的死锁，但此查询中只有一个表......

这发生在键级别而不是表级别吗？我的 Rails 应用程序中必须有几十个（如果不是一百个）不同的查询。

如何找出死锁中涉及的其他查询/查询？

编辑：这是来自的死锁信息SHOW InnoDB STATUS

据我了解： - 线程 1 没有锁并等待锁定 PRIMARY - 线程 2 有锁 PRIMARY 并等待锁定 PRIMARY 这对我来说没有意义，因为它听起来不像死锁。

------------------------
LATEST DETECTED DEADLOCK
------------------------
130214 18:06:52
*** (1) TRANSACTION:
TRANSACTION 0 6720854, ACTIVE 2 sec, process no 10951, OS thread id 140317946369792 starting index read
mysql tables in use 1, locked 1
LOCK WAIT 3 lock struct(s), heap size 1216, 1 row lock(s)
MySQL thread id 419387, query id 2333457 10.0.3.3 foo updating
DELETE FROM view_offers WHERE view_id = 55
*** (1) WAITING FOR THIS LOCK TO BE GRANTED:
RECORD LOCKS space id 0 page no 6987532 n bits 168 index `PRIMARY` of table `foo`.`view_offers` trx id 0 6720854 lock_mode X waiting
Record lock, heap no 41 PHYSICAL RECORD: n_fields 12; compact format; info bits 0
 0: len 4; hex 80000037; asc    7;; 1: len 8; hex 00005f9c7d5f9261; asc   _ }_ a;; 2: len 6; hex 000000668d4c; asc    f L;; 3: len 7; hex 80001ec007080d; asc        ;; 4: len 4; hex 80000039; asc    9;; 5: len 4; hex 80000002; asc     ;; 6: len 8; hex 000000000c001798; asc         ;; 7: len 8; hex 022c4f4dc34a1e6e; asc  ,OM J n;; 8: len 8; hex 02796b4da8fe914c; asc  ykM   L;; 9: len 3; hex 019342; asc   B;; 10: len 30; hex 4e722e2035382050686f746f202831376d6c29202d2054696e74656e6661; asc Nr. 58 Photo (17ml) - Tintenfa;...(truncated); 11: len 4; hex 00000000; asc     ;;

*** (2) TRANSACTION:
TRANSACTION 0 6720844, ACTIVE 3 sec, process no 10951, OS thread id 140336508557056 inserting, thread declared inside InnoDB 500
mysql tables in use 2, locked 2
7762 lock struct(s), heap size 817136, 82058 row lock(s), undo log entries 28808
MySQL thread id 419384, query id 2333448 10.0.3.2 foo Sending data
INSERT INTO view_offers SELECT 55, 57, uiid, source, source_id, 100, 200, category_id, name, relevance FROM `offers`  WHERE `offers`.`source` IN (2) AND (((product_source = 2 AND product_source_id IN (1,2,3,..
*** (2) HOLDS THE LOCK(S):
RECORD LOCKS space id 0 page no 6987532 n bits 152 index `PRIMARY` of table `foo`.`view_offers` trx id 0 6720844 lock_mode X locks rec but not gap
Record lock, heap no 41 PHYSICAL RECORD: n_fields 12; compact format; info bits 0
 0: len 4; hex 80000037; asc    7;; 1: len 8; hex 00005f9c7d5f9261; asc   _ }_ a;; 2: len 6; hex 000000668d4c; asc    f L;; 3: len 7; hex 80001ec007080d; asc        ;; 4: len 4; hex 80000039; asc    9;; 5: len 4; hex 80000002; asc     ;; 6: len 8; hex 000000000c001798; asc         ;; 7: len 8; hex 022c4f4dc34a1e6e; asc  ,OM J n;; 8: len 8; hex 02796b4da8fe914c; asc  ykM   L;; 9: len 3; hex 019342; asc   B;; 10: len 30; hex 4e722e2035382050686f746f202831376d6c29202d2054696e74656e6661; asc Nr. 58 Photo (17ml) - Tintenfa;...(truncated); 11: len 4; hex 00000000; asc     ;;

*** (2) WAITING FOR THIS LOCK TO BE GRANTED:
RECORD LOCKS space id 0 page no 6987532 n bits 184 index `PRIMARY` of table `foo`.`view_offers` trx id 0 6720844 lock_mode X locks gap before rec insert intention waiting
Record lock, heap no 41 PHYSICAL RECORD: n_fields 12; compact format; info bits 0
 0: len 4; hex 80000037; asc    7;; 1: len 8; hex 00005f9c7d5f9261; asc   _ }_ a;; 2: len 6; hex 000000668d4c; asc    f L;; 3: len 7; hex 80001ec007080d; asc        ;; 4: len 4; hex 80000039; asc    9;; 5: len 4; hex 80000002; asc     ;; 6: len 8; hex 000000000c001798; asc         ;; 7: len 8; hex 022c4f4dc34a1e6e; asc  ,OM J n;; 8: len 8; hex 02796b4da8fe914c; asc  ykM   L;; 9: len 3; hex 019342; asc   B;; 10: len 30; hex 4e722e2035382050686f746f202831376d6c29202d2054696e74656e6661; asc Nr. 58 Photo (17ml) - Tintenfa;...(truncated); 11: len 4; hex 00000000; asc     ;;

*** WE ROLL BACK TRANSACTION (1)
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