MySQL \u4e8b\u52a1\u4e3b\u8981\u7528\u4e8e\u5904\u7406\u64cd\u4f5c\u91cf\u5927\uff0c\u590d\u6742\u5ea6\u9ad8\u7684\u6570\u636e\u3002\u6bd4\u5982\u8bf4\uff0c\u5728\u4eba\u5458\u7ba1\u7406\u7cfb\u7edf\u4e2d\uff0c\u4f60\u5220\u9664\u4e00\u4e2a\u4eba\u5458\uff0c\u4f60\u5373\u9700\u8981\u5220\u9664\u4eba\u5458\u7684\u57fa\u672c\u8d44\u6599\uff0c\u4e5f\u8981\u5220\u9664\u548c\u8be5\u4eba\u5458\u76f8\u5173\u7684\u4fe1\u606f\uff0c\u5982\u4fe1\u7bb1\uff0c\u6587\u7ae0\u7b49\u7b49\uff0c\u8fd9\u6837\uff0c\u8fd9\u4e9b\u6570\u636e\u5e93\u64cd\u4f5c\u8bed\u53e5\u5c31\u6784\u6210\u4e00\u4e2a\u4e8b\u52a1\uff01
\n\u5728 MySQL \u4e2d\u53ea\u6709\u4f7f\u7528\u4e86 Innodb \u6570\u636e\u5e93\u5f15\u64ce\u7684\u6570\u636e\u5e93\u6216\u8868\u624d\u652f\u6301\u4e8b\u52a1\u3002
\n\u4e8b\u52a1\u5904\u7406\u53ef\u4ee5\u7528\u6765\u7ef4\u62a4\u6570\u636e\u5e93\u7684\u5b8c\u6574\u6027\uff0c\u4fdd\u8bc1\u6210\u6279\u7684 SQL \u8bed\u53e5\u8981\u4e48\u5168\u90e8\u6267\u884c\uff0c\u8981\u4e48\u5168\u90e8\u4e0d\u6267\u884c\u3002
\n\u4e8b\u52a1\u7528\u6765\u7ba1\u7406 insert,update,delete \u8bed\u53e5<\/p>\n
\u4e00\u822c\u6765\u8bf4\uff0c\u4e8b\u52a1\u662f\u5fc5\u987b\u6ee1\u8db34\u4e2a\u6761\u4ef6\uff08ACID\uff09\uff1a\uff1a\u539f\u5b50\u6027\uff08Atomicity\uff0c\u6216\u79f0\u4e0d\u53ef\u5206\u5272\u6027\uff09\u3001\u4e00\u81f4\u6027\uff08Consistency\uff09\u3001\u9694\u79bb\u6027\uff08Isolation\uff0c\u53c8\u79f0\u72ec\u7acb\u6027\uff09\u3001\u6301\u4e45\u6027\uff08Durability\uff09\u3002 \u5728 MySQL \u547d\u4ee4\u884c\u7684\u9ed8\u8ba4\u8bbe\u7f6e\u4e0b\uff0c\u4e8b\u52a1\u90fd\u662f\u81ea\u52a8\u63d0\u4ea4\u7684\uff0c\u5373\u6267\u884c SQL \u8bed\u53e5\u540e\u5c31\u4f1a\u9a6c\u4e0a\u6267\u884c COMMIT \u64cd\u4f5c\u3002\u56e0\u6b64\u8981\u663e\u5f0f\u5730\u5f00\u542f\u4e00\u4e2a\u4e8b\u52a1\u52a1\u987b\u4f7f\u7528\u547d\u4ee4 BEGIN \u6216 START TRANSACTION\uff0c\u6216\u8005\u6267\u884c\u547d\u4ee4 SET AUTOCOMMIT=0\uff0c\u7528\u6765\u7981\u6b62\u4f7f\u7528\u5f53\u524d\u4f1a\u8bdd\u7684\u81ea\u52a8\u63d0\u4ea4\u3002<\/p>\n \u4e8b\u52a1\u63a7\u5236\u8bed\u53e5\uff1a MYSQL \u4e8b\u52a1\u5904\u7406\u4e3b\u8981\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a 2\u3001\u76f4\u63a5\u7528 SET \u6765\u6539\u53d8 MySQL \u7684\u81ea\u52a8\u63d0\u4ea4\u6a21\u5f0f: MySQL \u4e8b\u52a1\u4e3b\u8981\u7528\u4e8e\u5904\u7406\u64cd\u4f5c\u91cf\u5927\uff0c\u590d\u6742\u5ea6\u9ad8\u7684\u6570\u636e\u3002\u6bd4\u5982\u8bf4\uff0c\u5728\u4eba\u5458\u7ba1\u7406\u7cfb\u7edf\u4e2d\uff0c …<\/p>\n
\n\u539f\u5b50\u6027<\/strong>\uff1a\u4e00\u4e2a\u4e8b\u52a1\uff08transaction\uff09\u4e2d\u7684\u6240\u6709\u64cd\u4f5c\uff0c\u8981\u4e48\u5168\u90e8\u5b8c\u6210\uff0c\u8981\u4e48\u5168\u90e8\u4e0d\u5b8c\u6210\uff0c\u4e0d\u4f1a\u7ed3\u675f\u5728\u4e2d\u95f4\u67d0\u4e2a\u73af\u8282\u3002\u4e8b\u52a1\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u53d1\u751f\u9519\u8bef\uff0c\u4f1a\u88ab\u56de\u6eda\uff08Rollback\uff09\u5230\u4e8b\u52a1\u5f00\u59cb\u524d\u7684\u72b6\u6001\uff0c\u5c31\u50cf\u8fd9\u4e2a\u4e8b\u52a1\u4ece\u6765\u6ca1\u6709\u6267\u884c\u8fc7\u4e00\u6837\u3002
\n\u4e00\u81f4\u6027<\/strong>\uff1a\u5728\u4e8b\u52a1\u5f00\u59cb\u4e4b\u524d\u548c\u4e8b\u52a1\u7ed3\u675f\u4ee5\u540e\uff0c\u6570\u636e\u5e93\u7684\u5b8c\u6574\u6027\u6ca1\u6709\u88ab\u7834\u574f\u3002\u8fd9\u8868\u793a\u5199\u5165\u7684\u8d44\u6599\u5fc5\u987b\u5b8c\u5168\u7b26\u5408\u6240\u6709\u7684\u9884\u8bbe\u89c4\u5219\uff0c\u8fd9\u5305\u542b\u8d44\u6599\u7684\u7cbe\u786e\u5ea6\u3001\u4e32\u8054\u6027\u4ee5\u53ca\u540e\u7eed\u6570\u636e\u5e93\u53ef\u4ee5\u81ea\u53d1\u6027\u5730\u5b8c\u6210\u9884\u5b9a\u7684\u5de5\u4f5c\u3002
\n\u9694\u79bb\u6027<\/strong>\uff1a\u6570\u636e\u5e93\u5141\u8bb8\u591a\u4e2a\u5e76\u53d1\u4e8b\u52a1\u540c\u65f6\u5bf9\u5176\u6570\u636e\u8fdb\u884c\u8bfb\u5199\u548c\u4fee\u6539\u7684\u80fd\u529b\uff0c\u9694\u79bb\u6027\u53ef\u4ee5\u9632\u6b62\u591a\u4e2a\u4e8b\u52a1\u5e76\u53d1\u6267\u884c\u65f6\u7531\u4e8e\u4ea4\u53c9\u6267\u884c\u800c\u5bfc\u81f4\u6570\u636e\u7684\u4e0d\u4e00\u81f4\u3002\u4e8b\u52a1\u9694\u79bb\u5206\u4e3a\u4e0d\u540c\u7ea7\u522b\uff0c\u5305\u62ec\u8bfb\u672a\u63d0\u4ea4\uff08Read uncommitted\uff09\u3001\u8bfb\u63d0\u4ea4\uff08read committed\uff09\u3001\u53ef\u91cd\u590d\u8bfb\uff08repeatable read\uff09\u548c\u4e32\u884c\u5316\uff08Serializable\uff09\u3002
\n\u6301\u4e45\u6027<\/strong>\uff1a\u4e8b\u52a1\u5904\u7406\u7ed3\u675f\u540e\uff0c\u5bf9\u6570\u636e\u7684\u4fee\u6539\u5c31\u662f\u6c38\u4e45\u7684\uff0c\u5373\u4fbf\u7cfb\u7edf\u6545\u969c\u4e5f\u4e0d\u4f1a\u4e22\u5931\u3002<\/p>\n
\nBEGIN\u6216START TRANSACTION\uff1b\u663e\u5f0f\u5730\u5f00\u542f\u4e00\u4e2a\u4e8b\u52a1\uff1b
\nCOMMIT\uff1b\u4e5f\u53ef\u4ee5\u4f7f\u7528COMMIT WORK\uff0c\u4e0d\u8fc7\u4e8c\u8005\u662f\u7b49\u4ef7\u7684\u3002COMMIT\u4f1a\u63d0\u4ea4\u4e8b\u52a1\uff0c\u5e76\u4f7f\u5df2\u5bf9\u6570\u636e\u5e93\u8fdb\u884c\u7684\u6240\u6709\u4fee\u6539\u79f0\u4e3a\u6c38\u4e45\u6027\u7684\uff1b
\nROLLBACK\uff1b\u6709\u53ef\u4ee5\u4f7f\u7528ROLLBACK WORK\uff0c\u4e0d\u8fc7\u4e8c\u8005\u662f\u7b49\u4ef7\u7684\u3002\u56de\u6eda\u4f1a\u7ed3\u675f\u7528\u6237\u7684\u4e8b\u52a1\uff0c\u5e76\u64a4\u9500\u6b63\u5728\u8fdb\u884c\u7684\u6240\u6709\u672a\u63d0\u4ea4\u7684\u4fee\u6539\uff1b
\nSAVEPOINT identifier\uff1bSAVEPOINT\u5141\u8bb8\u5728\u4e8b\u52a1\u4e2d\u521b\u5efa\u4e00\u4e2a\u4fdd\u5b58\u70b9\uff0c\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u53ef\u4ee5\u6709\u591a\u4e2aSAVEPOINT\uff1b
\nRELEASE SAVEPOINT identifier\uff1b\u5220\u9664\u4e00\u4e2a\u4e8b\u52a1\u7684\u4fdd\u5b58\u70b9\uff0c\u5f53\u6ca1\u6709\u6307\u5b9a\u7684\u4fdd\u5b58\u70b9\u65f6\uff0c\u6267\u884c\u8be5\u8bed\u53e5\u4f1a\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38\uff1b
\nROLLBACK TO identifier\uff1b\u628a\u4e8b\u52a1\u56de\u6eda\u5230\u6807\u8bb0\u70b9\uff1b
\nSET TRANSACTION\uff1b\u7528\u6765\u8bbe\u7f6e\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b\u3002InnoDB\u5b58\u50a8\u5f15\u64ce\u63d0\u4f9b\u4e8b\u52a1\u7684\u9694\u79bb\u7ea7\u522b\u6709READ UNCOMMITTED\u3001READ COMMITTED\u3001REPEATABLE READ\u548cSERIALIZABLE\u3002<\/p>\n
\n1\u3001\u7528 BEGIN, ROLLBACK, COMMIT\u6765\u5b9e\u73b0
\nBEGIN \u5f00\u59cb\u4e00\u4e2a\u4e8b\u52a1
\nROLLBACK \u4e8b\u52a1\u56de\u6eda
\nCOMMIT \u4e8b\u52a1\u786e\u8ba4<\/p>\n
\nSET AUTOCOMMIT=0 \u7981\u6b62\u81ea\u52a8\u63d0\u4ea4
\nSET AUTOCOMMIT=1 \u5f00\u542f\u81ea\u52a8\u63d0\u4ea4<\/p>\n\r\nmysql> use RUNOOB;\r\nDatabase changed\r\nmysql> CREATE TABLE runoob_transaction_test( id int(5)) engine=innodb; # \u521b\u5efa\u6570\u636e\u8868\r\nQuery OK, 0 rows affected (0.04 sec)\r\n \r\nmysql> select * from runoob_transaction_test;\r\nEmpty set (0.01 sec)\r\n \r\nmysql> begin; # \u5f00\u59cb\u4e8b\u52a1\r\nQuery OK, 0 rows affected (0.00 sec)\r\n \r\nmysql> insert into runoob_transaction_test value(5);\r\nQuery OK, 1 rows affected (0.01 sec)\r\n \r\nmysql> insert into runoob_transaction_test value(6);\r\nQuery OK, 1 rows affected (0.00 sec)\r\n \r\nmysql> commit; # \u63d0\u4ea4\u4e8b\u52a1\r\nQuery OK, 0 rows affected (0.01 sec)\r\n \r\nmysql> select * from runoob_transaction_test;\r\n+------+\r\n| id |\r\n+------+\r\n| 5 |\r\n| 6 |\r\n+------+\r\n2 rows in set (0.01 sec)\r\n \r\nmysql> begin; # \u5f00\u59cb\u4e8b\u52a1\r\nQuery OK, 0 rows affected (0.00 sec)\r\n \r\nmysql> insert into runoob_transaction_test values(7);\r\nQuery OK, 1 rows affected (0.00 sec)\r\n \r\nmysql> rollback; # \u56de\u6eda\r\nQuery OK, 0 rows affected (0.00 sec)\r\n \r\nmysql> select * from runoob_transaction_test; # \u56e0\u4e3a\u56de\u6eda\u6240\u4ee5\u6570\u636e\u6ca1\u6709\u63d2\u5165\r\n+------+\r\n| id |\r\n+------+\r\n| 5 |\r\n| 6 |\r\n+------+\r\n2 rows in set (0.01 sec)\r\n \r\nmysql>\r\n<\/pre>\n
\r\n<?php\r\n$dbhost = 'localhost:3306'; \/\/ mysql\u670d\u52a1\u5668\u4e3b\u673a\u5730\u5740\r\n$dbuser = 'root'; \/\/ mysql\u7528\u6237\u540d\r\n$dbpass = '123456'; \/\/ mysql\u7528\u6237\u540d\u5bc6\u7801\r\n$conn = mysqli_connect($dbhost, $dbuser, $dbpass);\r\nif(! $conn )\r\n{\r\n die('\u8fde\u63a5\u5931\u8d25: ' . mysqli_error($conn));\r\n}\r\n\/\/ \u8bbe\u7f6e\u7f16\u7801\uff0c\u9632\u6b62\u4e2d\u6587\u4e71\u7801\r\nmysqli_query($conn, \"set names utf8\");\r\nmysqli_select_db( $conn, 'RUNOOB' );\r\nmysqli_query($conn, \"SET AUTOCOMMIT=0\"); \/\/ \u8bbe\u7f6e\u4e3a\u4e0d\u81ea\u52a8\u63d0\u4ea4\uff0c\u56e0\u4e3aMYSQL\u9ed8\u8ba4\u7acb\u5373\u6267\u884c\r\nmysqli_begin_transaction($conn); \/\/ \u5f00\u59cb\u4e8b\u52a1\u5b9a\u4e49\r\n \r\nif(!mysqli_query($conn, \"insert into runoob_transaction_test (id) values(8)\"))\r\n{\r\n mysqli_query($conn, \"ROLLBACK\"); \/\/ \u5224\u65ad\u5f53\u6267\u884c\u5931\u8d25\u65f6\u56de\u6eda\r\n}\r\n \r\nif(!mysqli_query($conn, \"insert into runoob_transaction_test (id) values(9)\"))\r\n{\r\n mysqli_query($conn, \"ROLLBACK\"); \/\/ \u5224\u65ad\u6267\u884c\u5931\u8d25\u65f6\u56de\u6eda\r\n}\r\nmysqli_commit($conn); \/\/\u6267\u884c\u4e8b\u52a1\r\nmysqli_close($conn);\r\n?>\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"