{"id":11503,"date":"2025-06-12T15:20:44","date_gmt":"2025-06-12T07:20:44","guid":{"rendered":"https:\/\/egonlin.com\/?p=11503"},"modified":"2025-06-12T15:22:55","modified_gmt":"2025-06-12T07:22:55","slug":"%e6%95%b0%e6%8d%ae%e5%ba%93%e4%ba%8b%e5%8a%a1","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=11503","title":{"rendered":"\u6570\u636e\u5e93\u4e8b\u52a1"},"content":{"rendered":"

\u4e00 \u4e8b\u52a1\u4ecb\u7ecd<\/h3>\n

1\u3001\u4ec0\u4e48\u662f\u4e8b\u52a1:<\/strong><\/p>\n

\u4e8b\u52a1(Transaction)\uff0c\u987e\u540d\u601d\u4e49\u5c31\u662f\u8981\u505a\u7684\u6216\u6240\u505a\u7684\u4e8b\u60c5\uff0c\u6570\u636e\u5e93\u4e8b\u52a1\u6307\u7684\u5219\u662f\u4f5c\u4e3a\u5355\u4e2a\u903b\u8f91\u5de5\u4f5c\u5355\u5143\u6267\u884c\u7684\u4e00\u7cfb\u5217\u64cd\u4f5c\uff08SQL\u8bed\u53e5\uff09\u3002\u8fd9\u4e9b\u64cd\u4f5c\u8981\u4e48\u5168\u90e8\u6267\u884c\uff0c\u8981\u4e48\u5168\u90e8\u4e0d\u6267\u884c\u3002<\/p>\n

2\u3001\u4e3a\u4ec0\u4e48\u9700\u8981\u4e8b\u52a1<\/strong><\/p>\n

\u628a\u4e00\u7cfb\u5217sql\u653e\u5165\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u6709\u4e24\u4e2a\u76ee\u7684\uff1a<\/p>\n

\n
1\u3001\u4e3a\u6570\u636e\u5e93\u64cd\u4f5c\u63d0\u4f9b\u4e86\u4e00\u4e2a\u4ece\u5931\u8d25\u4e2d\u6062\u590d\u5230\u6b63\u5e38\u72b6\u6001\u7684\u65b9\u6cd5\uff0c\u540c\u65f6\u63d0\u4f9b\u4e86\u6570\u636e\u5e93\u5373\u4f7f\u5728\u5f02\u5e38\u72b6\u6001\u4e0b\u4ecd\u80fd\u4fdd\u6301\u4e00\u81f4\u6027\u7684\u65b9\u6cd5\u3002\r\n2\u3001\u5f53\u591a\u4e2a\u5e94\u7528\u7a0b\u5e8f\u5728\u5e76\u53d1\u8bbf\u95ee\u6570\u636e\u5e93\u65f6\uff0c\u53ef\u4ee5\u5728\u8fd9\u4e9b\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u63d0\u4f9b\u4e00\u4e2a\u9694\u79bb\u65b9\u6cd5\uff0c\u4ee5\u9632\u6b62\u5f7c\u6b64\u7684\u64cd\u4f5c\u4e92\u76f8\u5e72\u6270\u3002<\/pre>\n<\/div>\n
\u5f53\u4e00\u4e2a\u4e8b\u52a1\u88ab\u63d0\u4ea4\u7ed9\u4e86DBMS\uff08\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff09\uff0c\u5219DBMS\u9700\u8981\u786e\u4fdd\u8be5\u4e8b\u52a1\u4e2d\u7684\u6240\u6709\u64cd\u4f5c\u90fd\u6210\u529f\u5b8c\u6210\u4e14\u5176\u7ed3\u679c\u88ab\u6c38\u4e45\u4fdd\u5b58\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u5982\u679c\u4e8b\u52a1\u4e2d\u6709\u7684\u64cd\u4f5c\u6ca1\u6709\u6210\u529f\u5b8c\u6210\uff0c\u5219\u4e8b\u52a1\u4e2d\u7684\u6240\u6709\u64cd\u4f5c\u90fd\u9700\u8981\u88ab\u56de\u6eda\uff0c\u56de\u5230\u4e8b\u52a1\u6267\u884c\u524d\u7684\u72b6\u6001\uff08\u8981\u4e48\u5168\u6267\u884c\uff0c\u8981\u4e48\u5168\u90fd\u4e0d\u6267\u884c\uff09;\u540c\u65f6\uff0c\u8be5\u4e8b\u52a1\u5bf9\u6570\u636e\u5e93\u6216\u8005\u5176\u4ed6\u4e8b\u52a1\u7684\u6267\u884c\u65e0\u5f71\u54cd\uff0c\u6240\u6709\u7684\u4e8b\u52a1\u90fd\u597d\u50cf\u5728\u72ec\u7acb\u7684\u8fd0\u884c\u3002<\/p>\n
\u4f46\u5728\u73b0\u5b9e\u60c5\u51b5\u4e0b\uff0c\u5931\u8d25\u7684\u98ce\u9669\u5f88\u9ad8\u3002\u5728\u4e00\u4e2a\u6570\u636e\u5e93\u4e8b\u52a1\u7684\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u6709\u53ef\u80fd\u4f1a\u9047\u4e0a\u4e8b\u52a1\u64cd\u4f5c\u5931\u8d25\u3001\u6570\u636e\u5e93\u7cfb\u7edf\/\u64cd\u4f5c\u7cfb\u7edf\u5931\u8d25\uff0c\u751a\u81f3\u662f\u5b58\u50a8\u4ecb\u8d28\u5931\u8d25\u7b49\u60c5\u51b5\u3002\u8fd9\u4fbf\u9700\u8981DBMS\u5bf9\u4e00\u4e2a\u6267\u884c\u5931\u8d25\u7684\u4e8b\u52a1\u6267\u884c\u6062\u590d\u64cd\u4f5c\uff0c\u5c06\u5176\u6570\u636e\u5e93\u72b6\u6001\u6062\u590d\u5230\u4e00\u81f4\u72b6\u6001\uff08\u6570\u636e\u7684\u4e00\u81f4\u6027\u5f97\u5230\u4fdd\u8bc1\u7684\u72b6\u6001\uff09\u3002\u4e3a\u4e86\u5b9e\u73b0\u5c06\u6570\u636e\u5e93\u72b6\u6001\u6062\u590d\u5230\u4e00\u81f4\u72b6\u6001\u7684\u529f\u80fd\uff0cDBMS\u901a\u5e38\u9700\u8981\u7ef4\u62a4\u4e8b\u52a1\u65e5\u5fd7\u4ee5\u8ffd\u8e2a\u4e8b\u52a1\u4e2d\u6240\u6709\u5f71\u54cd\u6570\u636e\u5e93\u6570\u636e\u7684\u64cd\u4f5c\u3002<\/p>\n
\u7ecf\u5178\u7684\u94f6\u884c\u8f6c\u8d26\u4f8b\u5b50<\/p>\n
\n
A\u8d26\u6237\u8f6c\u7ed9B\u8d26\u623710\u5143\uff0c\u6570\u636e\u5e93\u64cd\u4f5c\u9700\u8981\u4e24\u6b65\uff0c\u7b2c\u4e00\u6b65A\u8d26\u6237\u51cf10\u5143\uff0c\u7b2c\u4e8c\u6b65B\u8d26\u6237\u52a010\u5143\uff0c\u5982\u679c\u6ca1\u6709\u4e8b\u52a1\u5e76\u4e14\u5728\u4e24\u6b65\u4e2d\u95f4\u53d1\u751f\u5f02\u5e38\uff0c\r\n\u5c31\u4f1a\u5bfc\u81f4A\u7684\u8d26\u6237\u5c11\u4e8610\u5143\uff0c\u4f46B\u7684\u8d26\u6237\u6ca1\u6709\u53d8\u5316\uff0c\u5982\u679c\u4e0d\u80fd\u4fdd\u8bc1\u8fd9\u4e24\u6b65\u64cd\u4f5c\u7edf\u4e00\uff0c\u94f6\u884c\u7684\u8f6c\u8d26\u4e1a\u52a1\u4e5f\u6ca1\u6cd5\u8fdb\u884c\u5c55\u5f00\u4e86\u3002<\/pre>\n<\/div>\n
\u4e8b\u52a1\u7ba1\u7406\u662f\u6bcf\u4e2a\u6570\u636e\u5e93\uff08oracle\u3001mysql\u3001db\u7b49\uff09\u90fd\u5fc5\u987b\u5b9e\u73b0\u7684\u3002<\/p>\n
\u4e8c \u4e8b\u52a1\u76844\u4e2a\u7279\u6027<\/h3>\n
\u8fd9\u56db\u4e2a\u7279\u6027\u901a\u5e38\u79f0\u4e3aACID\u7279\u6027<\/strong><\/em><\/p>\n
\n
# 1\u3001\u539f\u5b50\u6027\uff08Atomicity\uff09\r\n\u4e8b\u52a1\u4f5c\u4e3a\u4e00\u4e2a\u6574\u4f53\u88ab\u6267\u884c\uff0c\u5305\u542b\u5728\u5176\u4e2d\u7684\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\u8981\u4e48\u5168\u90e8\u88ab\u6267\u884c\uff0c\u8981\u4e48\u90fd\u4e0d\u6267\u884c\u3002\r\n\r\n# 2\u3001\u4e00\u81f4\u6027\uff08Consistency\uff09\r\n\u4e8b\u52a1\u5e94\u786e\u4fdd\u6570\u636e\u5e93\u7684\u72b6\u6001\u4ece\u4e00\u4e2a\u4e00\u81f4\u72b6\u6001\u8f6c\u53d8\u4e3a\u53e6\u4e00\u4e2a\u4e00\u81f4\u72b6\u6001\uff0c\u4f8b\u5982\u8f6c\u8d26\u884c\u4e3a\u4e2d\uff0c\u4e00\u4e2a\u4eba\u51cf\u4e8650\u5143\uff0c\u53e6\u5916\u4e00\u4e2a\u4eba\u5c31\u5e94\u8be5\u52a0\u4e0a\u8fd950\u5143\uff0c\u800c\u4e0d\u80fd\u662f40\u5143\u3002\r\n\u5176\u4ed6\u4e00\u81f4\u72b6\u6001\u7684\u542b\u4e49\u662f\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u5e94\u6ee1\u8db3\u5b8c\u6574\u6027\u7ea6\u675f,\u4f8b\u5982\u5b57\u6bb5\u7ea6\u675f\u4e0d\u80fd\u4e3a\u8d1f\u6570\uff0c\u4e8b\u52a1\u6267\u884c\u5b8c\u6bd5\u540e\u7684\u8be5\u5b57\u6bb5\u4e5f\u540c\u6837\u4e0d\u662f\u8d1f\u6570\r\n\r\n# 3\u3001\u9694\u79bb\u6027\uff08Isolation\uff09\r\n\u591a\u4e2a\u4e8b\u52a1\u5e76\u53d1\u6267\u884c\u65f6\uff0c\u4e00\u4e2a\u4e8b\u52a1\u7684\u6267\u884c\u4e0d\u5e94\u5f71\u54cd\u5176\u4ed6\u4e8b\u52a1\u7684\u6267\u884c\u3002\r\n\r\n# 4\u3001\u6301\u4e45\u6027\uff08Durability\uff09\r\n\u4e00\u4e2a\u4e8b\u52a1\u4e00\u65e6\u63d0\u4ea4\uff0c\u4ed6\u5bf9\u6570\u636e\u5e93\u7684\u4fee\u6539\u5e94\u8be5\u6c38\u4e45\u4fdd\u5b58\u5728\u6570\u636e\u5e93\u4e2d\u3002<\/pre>\n<\/div>\n
 <\/p>\n
\u4e3e\u4f8b\u8bf4\u660eACID<\/strong><\/p>\n
\u7528\u4e00\u4e2a\u5e38\u7528\u7684\u201cA\u8d26\u6237\u5411B\u8d26\u53f7\u6c47\u94b1\u201d\u7684\u4f8b\u5b50\u6765\u8bf4\u660e\u5982\u4f55\u901a\u8fc7\u6570\u636e\u5e93\u4e8b\u52a1\u4fdd\u8bc1\u6570\u636e\u7684\u51c6\u786e\u6027\u548c\u5b8c\u6574\u6027\u3002\u719f\u6089\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4e8b\u52a1\u7684\u90fd\u77e5\u9053\u4ece\u5e10\u53f7A\u5230\u5e10\u53f7B\u9700\u89816\u4e2a\u64cd\u4f5c\uff1a<\/p>\n
1\u3001\u4eceA\u8d26\u53f7\u4e2d\u628a\u4f59\u989d\u8bfb\u51fa\u6765\uff08500\uff09\u3002
\n2\u3001\u5bf9A\u8d26\u53f7\u505a\u51cf\u6cd5\u64cd\u4f5c\uff08500-100\uff09\u3002
\n3\u3001\u628a\u7ed3\u679c\u5199\u56deA\u8d26\u53f7\u4e2d\uff08400\uff09\u3002
\n4\u3001\u4eceB\u8d26\u53f7\u4e2d\u628a\u4f59\u989d\u8bfb\u51fa\u6765\uff08500\uff09\u3002
\n5\u3001\u5bf9B\u8d26\u53f7\u505a\u52a0\u6cd5\u64cd\u4f5c\uff08500+100\uff09\u3002
\n6\u3001\u628a\u7ed3\u679c\u5199\u56deB\u8d26\u53f7\u4e2d\uff08600\uff09\u3002<\/p>\n
\n
# 1\u3001\u539f\u5b50\u6027\uff1a\r\n\u4fdd\u8bc11-6\u6240\u6709\u8fc7\u7a0b\u8981\u4e48\u90fd\u6267\u884c\uff0c\u8981\u4e48\u90fd\u4e0d\u6267\u884c\u3002\u4e00\u65e6\u5728\u6267\u884c\u67d0\u4e00\u6b65\u9aa4\u7684\u8fc7\u7a0b\u4e2d\u53d1\u751f\u95ee\u9898\uff0c\u5c31\u9700\u8981\u6267\u884c\u56de\u6eda\u64cd\u4f5c\u3002 \u5047\u5982\u6267\u884c\u5230\u7b2c\u4e94\u6b65\u7684\u65f6\u5019\uff0cB\u8d26\u6237\u7a81\u7136\u4e0d\u53ef\u7528\uff08\u6bd4\u5982\u88ab\u6ce8\u9500\uff09\uff0c\u90a3\u4e48\u4e4b\u524d\u7684\u6240\u6709\u64cd\u4f5c\u90fd\u5e94\u8be5\u56de\u6eda\u5230\u6267\u884c\u4e8b\u52a1\u4e4b\u524d\u7684\u72b6\u6001\u3002\r\n\r\n# 2\u3001\u4e00\u81f4\u6027\r\n\u5728\u8f6c\u8d26\u4e4b\u524d\uff0cA\u548cB\u7684\u8d26\u6237\u4e2d\u5171\u6709500+500=1000\u5143\u94b1\u3002\u5728\u8f6c\u8d26\u4e4b\u540e\uff0cA\u548cB\u7684\u8d26\u6237\u4e2d\u5171\u6709400+600=1000\u5143\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u6570\u636e\u7684\u72b6\u6001\u5728\u6267\u884c\u8be5\u4e8b\u52a1\u64cd\u4f5c\u4e4b\u540e\u4ece\u4e00\u4e2a\u72b6\u6001\u6539\u53d8\u5230\u4e86\u53e6\u5916\u4e00\u4e2a\u72b6\u6001\u3002\u540c\u65f6\u4e00\u81f4\u6027\u8fd8\u80fd\u4fdd\u8bc1\u8d26\u6237\u4f59\u989d\u4e0d\u4f1a\u53d8\u6210\u8d1f\u6570\u7b49\u3002\r\n\r\n# 3\u3001\u9694\u79bb\u6027\r\n\u5728A\u5411B\u8f6c\u8d26\u7684\u6574\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u53ea\u8981\u4e8b\u52a1\u8fd8\u6ca1\u6709\u63d0\u4ea4\uff08commit\uff09\uff0c\u67e5\u8be2A\u8d26\u6237\u548cB\u8d26\u6237\u7684\u65f6\u5019\uff0c\u4e24\u4e2a\u8d26\u6237\u91cc\u9762\u7684\u94b1\u7684\u6570\u91cf\u90fd\u4e0d\u4f1a\u6709\u53d8\u5316\u3002\r\n\u5982\u679c\u5728A\u7ed9B\u8f6c\u8d26\u7684\u540c\u65f6\uff0c\u6709\u53e6\u5916\u4e00\u4e2a\u4e8b\u52a1\u6267\u884c\u4e86C\u7ed9B\u8f6c\u8d26\u7684\u64cd\u4f5c\u5e76\u63d0\u4ea4\u4e86\uff0c\u867d\u7136A\u7ed9B\u8f6c\u8d26\u7684\u4e8b\u52a1\u91cc\u770b\u4e0d\u5230\u6700\u65b0\u4fee\u6539\u7684\u6570\u636e\uff0c\u4f46\u662f\u5f53\u4e24\u4e2a\u4e8b\u52a1\u90fd\u63d0\u4ea4\u5b8c\u7684\u65f6\u5019\uff0cB\u8d26\u6237\u91cc\u9762\u7684\u94b1\u5e94\u8be5\u662fA\u8f6c\u7ed9B\u7684\u94b1\u52a0\u4e0aC\u8f6c\u7ed9B\u7684\u94b1\u518d\u52a0\u4e0a\u81ea\u5df1\u539f\u6709\u7684\u94b1\u3002\r\n\r\n# 4\u3001\u6301\u4e45\u6027\r\n\u4e00\u65e6\u8f6c\u8d26\u6210\u529f\uff08\u4e8b\u52a1\u63d0\u4ea4\uff09\uff0c\u4e24\u4e2a\u8d26\u6237\u7684\u91cc\u9762\u7684\u94b1\u5c31\u4f1a\u771f\u7684\u53d1\u751f\u53d8\u5316\uff08\u4f1a\u628a\u6570\u636e\u5199\u5165\u6570\u636e\u5e93\u505a\u6301\u4e45\u5316\u4fdd\u5b58\uff09\uff01\r\n\r\n# \u5f3a\u8c03\uff1a\u539f\u5b50\u6027\u4e0e\u9694\u79bb\u6027\r\n\u4e00\u81f4\u6027\u4e0e\u539f\u5b50\u6027\u662f\u5bc6\u5207\u76f8\u5173\u7684,\u539f\u5b50\u6027\u7684\u7834\u574f\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u5e93\u7684\u4e0d\u4e00\u81f4\uff0c\u6570\u636e\u7684\u4e00\u81f4\u6027\u95ee\u9898\u5e76\u4e0d\u90fd\u548c\u539f\u5b50\u6027\u6709\u5173\u3002\r\n\u6bd4\u5982\u521a\u521a\u7684\u4f8b\u5b50\uff0c\u5728\u7b2c\u4e94\u6b65\u7684\u65f6\u5019\uff0c\u5bf9B\u8d26\u6237\u505a\u52a0\u6cd5\u65f6\u53ea\u52a0\u4e8650\u5143\u3002\u90a3\u4e48\u8be5\u8fc7\u7a0b\u53ef\u4ee5\u7b26\u5408\u539f\u5b50\u6027\uff0c\u4f46\u662f\u6570\u636e\u7684\u4e00\u81f4\u6027\u5c31\u51fa\u73b0\u4e86\u95ee\u9898\u3002\r\n\r\n\u56e0\u6b64\uff0c\u4e8b\u52a1\u7684\u539f\u5b50\u6027\u4e0e\u4e00\u81f4\u6027\u7f3a\u4e00\u4e0d\u53ef\u3002<\/pre>\n<\/div>\n
\u6848\u4f8b\uff1a\u9a8c\u8bc1\u4e8b\u52a1\u7684\u4e00\u81f4\u6027<\/p>\n
\u51c6\u5907\u8868\uff1a<\/p>\n
sq<\/span><\/div>\n
\n
create table employee(\r\nid int primary key auto_increment,\r\nname varchar(20) not null,\r\nage int(3) unsigned not null default 20\r\n);\r\n\r\ninsert into employee(name) values\r\n('egon'),\r\n('alex'),\r\n('wupeiqi'),\r\n('yuanhao'),\r\n('liwenzhou'),\r\n('jingliyang'),\r\n('jinxin'),\r\n('\u6210\u9f99'),\r\n('\u6b6a\u6b6a'),\r\n('\u4e2b\u4e2b'),\r\n('\u4e01\u4e01'),\r\n('\u661f\u661f'),\r\n('\u683c\u683c'),\r\n('\u5f20\u91ce'),\r\n('\u7a0b\u54ac\u91d1'),\r\n('\u7a0b\u54ac\u94f6'),\r\n('\u7a0b\u54ac\u94dc'),\r\n('\u7a0b\u54ac\u94c1')\r\n;\r\nupdate employee set age = 18 where id <=3;<\/pre>\n<\/div>\n
\u5b9e\u9a8c\uff1a<\/p>\n
\n\n\n\n\n\n\n\n\n
<\/td>\n\u00a0\u4e8b\u52a1\u4e00<\/strong><\/td>\n\u00a0\u4e8b\u52a1\u4e8c<\/strong><\/td>\n<\/tr>\n
\u00a0\u6b65\u9aa41<\/td>\nstart transaction;<\/p>\n
select * from employee where name = “egon”; — \u5bf9\u5e94\u7684age = 18<\/td>\n
start transaction;<\/p>\n
select * from employee where name = “egon”; — \u5bf9\u5e94\u7684age = 18<\/td>\n<\/tr>\n
\u00a0\u00a0\u6b65\u9aa42<\/td>\n<\/td>\n\n
update employee set age=age+1 where name = “egon”;<\/span><\/p>\n
commit;\u00a0 — \u4fee\u6539egon\u7684\u5e74\u9f84\u4e3a19\u5c81\uff0c\u5e76\u63d0\u4ea4<\/span><\/p>\n
select * from employee where name = “egon”; — \u5bf9\u5e94\u7684age\u53d8\u4e3a19<\/span><\/p>\n<\/td>\n<\/tr>\n
\u00a0\u00a0\u6b65\u9aa43<\/td>\n— \u5728\u4e8b\u52a1\u4e8ccommit\u4e4b\u540e\uff0c\u91cd\u65b0\u67e5\u8be2\uff0c\u53d1\u73b0\u5bf9\u5e94\u7684age \u4ecd\u4e3a18<\/p>\n
select * from employee where name = “egon”;<\/td>\n
<\/td>\n<\/tr>\n
\u00a0\u00a0\u6b65\u9aa44<\/td>\n— \u867d\u7136\u770b\u5230\u7684age\u4ecd\u4e3a18\uff0c\u4f46\u56e0\u4e3a\u4e8b\u52a1\u7684\u4e00\u81f4\u6027\u539f\u5219\uff0c\u5176\u5b9e\u6b64\u5904\u7684\u4fee\u6539\u662f\u5728age=19\u7684\u57fa\u7840\u4e0a\u8fdb\u884c\u7684<\/p>\n
update employee set age=age+1 where name = “egon”;\u00a0\u00a0<\/span><\/p>\n
— \u67e5\u770b\u5230age\u53d8\u4e3a20<\/span><\/p>\n
select * from employee where name = “egon”;\u00a0\u00a0<\/span><\/p>\n<\/td>\n
<\/td>\n<\/tr>\n
\u00a0\u00a0\u6b65\u9aa45<\/td>\ncommit;<\/p>\n
select * from employee where name = “egon”;\u00a0 — age =20<\/td>\n
<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u4e09 MySQL\u4e8b\u52a1\u76843\u79cd\u8fd0\u884c\u6a21\u5f0f<\/h3>\n
\n
\u9690\u5f0f == \u81ea\u52a8<\/p>\n
\u663e\u5f0f == \u624b\u52a8<\/p>\n
 <\/p>\n<\/div>\n
1\u3001\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\uff08\u9690\u5f0f\u5f00\u542f\u3001\u9690\u5f0f\u63d0\u4ea4\uff09<\/strong><\/p>\n
\n
\u6b64\u4e43mysql\u9ed8\u8ba4\u7684\u4e8b\u52a1\u8fd0\u884c\u6a21\u5f0f\r\n\r\nmysql\u9ed8\u8ba4\u4e3a\u6bcf\u6761sql\u5f00\u542f\u4e8b\u52a1\uff0c\u5e76\u4e14\u4f1a\u5728\u672c\u6761sql\u6267\u884c\u5b8c\u6bd5\u540e\u81ea\u52a8\u6267\u884ccommit\u63d0\u4ea4<\/pre>\n<\/div>\n
2\u3001\u9690\u5f0f\u4e8b\u52a1\uff08\u9690\u5f0f\u5f00\u542f\u3001\u663e\u5f0f\u63d0\u4ea4\uff09<\/strong><\/p>\n
\n
\u65e2\u7136mysql\u9ed8\u8ba4\u662f\u4e3a\u6bcf\u6761sql\u90fd\u5f00\u542f\u4e86\u4e8b\u52a1\u5e76\u4e14\u5728\u8be5sql\u8fd0\u884c\u5b8c\u6bd5\u540e\u4f1a\u81ea\u52a8\u63d0\u4ea4\r\n\u90a3\u4e48\u6211\u53ea\u9700\u8981\u5c06\u81ea\u52a8\u63d0\u4ea4\u5173\u95ed\u5373\u53ef\u53d8\u6210\u201c\u9690\u5f0f\u5f00\u542f\u3001\u663e\u5f0f\u63d0\u4ea4\u201d\r\n\r\n#1.\u4e34\u65f6\u5173\u95ed\r\nset autocommit =0;\r\nshow variables like 'autocommit';  -- \u67e5\u770b\r\n\r\n#2.\u6c38\u4e45\u5173\u95ed\r\n[root@db01 ~]# vim \/etc\/my.cnf\r\n[mysqld]\r\nautocommit=0<\/pre>\n<\/div>\n
3\u3001\u663e\u5f0f\u4e8b\u52a1\uff08\u663e\u5f0f\u5f00\u542f\u3001\u663e\u5f0f\u63d0\u4ea4\uff09<\/strong><\/p>\n
\n
\u624b\u52a8\u5f00\u542f\u7684\u4e8b\u52a1\u91cc\u9ed8\u8ba4\u4e0d\u4f1a\u81ea\u52a8\u63d0\u4ea4\r\n\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5c06\u8981\u6267\u884c\u7684sql\u8bed\u53e5\u653e\u5728\u6211\u4eec\u81ea\u5df1\u624b\u52a8\u5f00\u542f\u7684\u4e8b\u52a1\u91cc\uff0c\u5982\u6b64\u4fbf\u662f\u663e\u5f0f\u5f00\u542f\u3001\u663e\u5f0f\u63d0\u4ea4\r\nstart transaction;\r\n\r\nupdate test.t1 set id=33 where name = \"jack\";\r\n\r\ncommit;\r\n\r\n# \u6ce8\u610f\uff0c\u91cd\u8981\u7684\u4e8b\u8bf4\u4e09\u904d\r\n\u8fd9\u79cd\u65b9\u5f0f\u5728\u5f53\u4f60\u4f7f\u7528commit\u6216\u8005rollback\u540e\uff0c\u4e8b\u52a1\u5c31\u7ed3\u675f\u4e86\r\n\u518d\u6b21\u8fdb\u5165\u4e8b\u52a1\u72b6\u6001\u9700\u8981\u518d\u6b21start transaction\r\n\r\n<\/strong><\/pre>\n
# \u6ce8\u610f\uff0c\u91cd\u8981\u7684\u4e8b\u8bf4\u4e09\u904d\r\n\u8fd9\u79cd\u65b9\u5f0f\u5728\u5f53\u4f60\u4f7f\u7528commit\u6216\u8005rollback\u540e\uff0c\u4e8b\u52a1\u5c31\u7ed3\u675f\u4e86\r\n\u518d\u6b21\u8fdb\u5165\u4e8b\u52a1\u72b6\u6001\u9700\u8981\u518d\u6b21start transaction<\/strong><\/pre>\n
# \u6ce8\u610f\uff0c\u91cd\u8981\u7684\u4e8b\u8bf4\u4e09\u904d\r\n\u8fd9\u79cd\u65b9\u5f0f\u5728\u5f53\u4f60\u4f7f\u7528commit\u6216\u8005rollback\u540e\uff0c\u4e8b\u52a1\u5c31\u7ed3\u675f\u4e86\r\n\u518d\u6b21\u8fdb\u5165\u4e8b\u52a1\u72b6\u6001\u9700\u8981\u518d\u6b21start transaction<\/strong><\/pre>\n<\/div>\n
\u65e0\u8bba\u4e8b\u52a1\u662f\u663e\u5f0f\u5f00\u542f\u8fd8\u662f\u9690\u5f0f\u5f00\u542f\uff0c\u4e8b\u52a1\u4f1a\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u88ab\u9690\u5f0f\u63d0\u4ea4<\/p>\n
\n
# \u9690\u5f0f\u63d0\u4ea4\u89e6\u53d1\u6761\u4ef6\r\n1.\u6267\u884c\u4e8b\u52a1\u6ca1\u6709commit\u65f6\uff0c\u5982\u679c\u4f7f\u7528\u4e86DDL\u6216\u8005DCL\u4f1a\u81ea\u52a8\u63d0\u4ea4\u4e0a\u4e00\u6761\u4e8b\u52a1\r\n2.\u6267\u884c\u4e8b\u52a1\u6ca1\u6709commit\u65f6\uff0c\u5982\u679c\u4f60\u624b\u52a8\u6267\u884cbegin\uff0c\u4f1a\u81ea\u52a8\u63d0\u4ea4\u4e0a\u4e00\u6761\u4e8b\u52a1\r\n3.\u6267\u884c\u4e8b\u52a1\u6ca1\u6709commit\u65f6\uff0c\u5982\u679c\u6267\u884c\u9501\u8868\uff08lock tables\uff09\u6216\u8005\u89e3\u9501\uff08unlock tables\uff09\uff0c\u4f1a\u81ea\u52a8\u63d0\u4ea4\u4e0a\u4e00\u6761\u4e8b\u52a1\r\n4.load data infile\uff08\u5bfc\u6570\u636e\uff09\u4f1a\u81ea\u52a8\u63d0\u4ea4\u4e0a\u4e00\u6761\u4e8b\u52a1\r\n5.select for update \u52a0\u9501\r\n6.\u5728autocommit=1\u7684\u65f6\u5019\uff0c\u4f1a\u81ea\u52a8\u63d0\u4ea4\u4e0a\u4e00\u6761\u4e8b\u52a1<\/pre>\n<\/div>\n
\u6269\u5c55\u9605\u8bfb<\/p>\n
# 1. \u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\uff08\u9690\u5f0f\u5f00\u542f\u3001\u9690\u5f0f\u63d0\u4ea4\uff09\r\n\r\n\u6bcf\u4e00\u6761\u5355\u72ec\u7684SQL\u8bed\u53e5\u90fd\u5728\u5176\u6267\u884c\u5b8c\u6210\u540e\u8fdb\u884c\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\uff0c\u5373\u6267\u884c SQL \u8bed\u53e5\u540e\u5c31\u4f1a\u9a6c\u4e0a\u81ea\u52a8\u9690\u5f0f\u6267\u884c COMMIT \u64cd\u4f5c\u3002\u5982\u679c\u51fa\u73b0\u9519\u8bef\uff0c\u5219\u8fdb\u884c\u4e8b\u52a1\u56de\u6eda\u81f3\u4e4b\u524d\u72b6\u6001\u3002\r\n\r\nSQL SERVER\u548cMY SQL\u4e2d\u90fd\u9ed8\u8ba4\u5f00\u542f\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\uff0cORACLE\u5219\u663e\u5f0f\u63d0\u4ea4\u4e8b\u52a1\u3002\u8fd9\u4e09\u79cd\u4ea7\u54c1\u90fd\u63d0\u4f9b\u4e86\u5404\u81ea\u7684\u65b9\u5f0f\u6765\u5f00\u95ed\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\u6a21\u5f0f\uff0c\u5177\u4f53\u5982\u4e0b\uff1a\r\n\r\n1\uff09MYSQL\u4e2d\u901a\u8fc7\u4e0b\u9762\u8bed\u53e5\u6765\u5f00\u542f\u6216\u5173\u95ed\u5f53\u524d\u4f1a\u8bdd\u6216\u5168\u5c40\u7684\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\u6a21\u5f0f\u3002\r\n\r\nset session autocommit=0; -- 0\u662f\u5173\u95ed\uff0c1\u662f\u5f00\u542f\uff1bsession\u662f\u8bbe\u7f6e\u5f53\u524d\u4f1a\u8bdd\u53d8\u91cf\uff0cglobal\u662f\u8bbe\u7f6e\u5168\u5c40\u53d8\u91cf\r\n2)SQL SERVER\u4e2d\u4f7f\u7528\u4e0b\u9762\u8bed\u53e5\u6765\u5173\u95ed\u6216\u6253\u5f00\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\u6a21\u5f0f \u3002\u6216\u8005\u901a\u8fc7 Sql Server Managerment Studio\uff0c\u5728 Tools -> Options Query Execution -> SQL Server -> ANSI \u9009\u9879\u4e2d\u52fe\u9009SET IMPLICIT_TRANSACTIONS\u8bbe\u7f6e\u5f00\u542f\u8fd8\u662f\u5173\u95ed\u81ea\u52a8\u4e8b\u52a1\u63d0\u4ea4\u6a21\u5f0f\u3002\r\n\r\nSET IMPLICIT_TRANSACTIONS ON; -- ON\u662f\u6253\u5f00\u9690\u5f0f\u4e8b\u52a1\u6a21\u5f0f\u6216\u5173\u95ed\u81ea\u52a8\u4e8b\u52a1\u6a21\u5f0f\uff0cOFF \u662f\u5173\u95ed\u9690\u5f0f\u4e8b\u52a1\u6a21\u5f0f\u6216\u6253\u5f00\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\u6a21\u5f0f\r\n3\uff09ORACLE\u901a\u8fc7\u5982\u4e0b\u8bed\u53e5\u5f00\u542f\u6216\u8005\u5173\u95ed\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\u6a21\u5f0f\r\n\r\nset autocommit on; -- on\u662f\u5f00\u542f\u81ea\u52a8\u4e8b\u52a1\u6a21\u5f0f\uff0coff\u662f\u5173\u95ed\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\u6a21\u5f0f\r\n\r\n# 2. \u9690\u5f0f\u4e8b\u52a1\uff08\u9690\u5f0f\u5f00\u542f\u3001\u663e\u5f0f\u63d0\u4ea4\uff09\r\n\r\n\u5728\u9690\u5f0f\u4e8b\u52a1\u4e2d\uff0c\u65e0\u9700\u4f7f\u7528BEGIN TRANASACTION \u6765\u5f00\u542f\u4e8b\u52a1\uff0c\u6bcf\u4e2aSQL\u8bed\u53e5\u7b2c\u4e00\u6b21\u6267\u884c\u5c31\u4f1a\u5f00\u542f\u4e00\u4e2a\u4e8b\u52a1\uff0c\u76f4\u5230\u7528COMMIT [TRANSACTION]\u6765\u63d0\u4ea4\u6216\u8005ROLLBACK [TRANSACTION]\u6765\u56de\u6eda\u7ed3\u675f\u4e8b\u52a1\u3002\r\n\r\n1\uff09SQL SERVER\u4e2d\u4f7f\u7528\u4e0b\u9762\u8bed\u53e5\u6765\u5f00\u542f\u548c\u5173\u95ed\u9690\u5f0f\u4e8b\u52a1\u6a21\u5f0f\u3002\u6216\u8005\u901a\u8fc7 Sql Server Managerment Studio\uff0c\u5728 Tools -> Options Query Execution -> SQL Server -> ANSI \u9009\u9879\u4e2d\u52fe\u9009SET IMPLICIT_TRANSACTIONS\u8bbe\u7f6e\u5f00\u542f\u8fd8\u662f\u5173\u95ed\u9690\u5f0f\u4e8b\u52a1\u6a21\u5f0f\u3002\r\n\r\nSET IMPLICIT_TRANSACTIONS ON --ON\u662f\u5f00\u542f\uff0cOFF\u662f\u5173\u95ed\r\n 2\uff09ORACLE\u9ed8\u8ba4\u5c31\u662f\u9690\u5f0f\u5f00\u542f\u4e8b\u52a1\uff0c\u663e\u5f0f\u63d0\u4ea4\u4e8b\u52a1\u3002\u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u8bed\u53e5\u5f00\u542f\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\uff0c\u4ee5\u8fbe\u5230\u9690\u5f0f\u63d0\u4ea4\u4e8b\u52a1\u3002\r\n\r\nSET autocommit ON; -- on\u662f\u5f00\u542f\u81ea\u52a8\u4e8b\u52a1\u6a21\u5f0f\uff0coff\u662f\u5173\u95ed\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\u6a21\u5f0f\r\n3\uff09MYSQL\u901a\u8fc7\u5173\u95ed\u81ea\u52a8\u63d0\u4ea4\u4e8b\u52a1\uff0c\u6765\u8fbe\u5230\u9690\u5f0f\u5f00\u542f\u4e8b\u52a1\uff0c\u663e\u5f0f\u63d0\u4ea4\u4e8b\u52a1\u7684\u76ee\u7684\u3002\r\n\r\nSET session autocommit = 0; -- 0\u662f\u5173\u95ed\uff0c1\u662f\u5f00\u542f\uff1bsession\u662f\u8bbe\u7f6e\u5f53\u524d\u4f1a\u8bdd\u53d8\u91cf\uff0cglobal\u662f\u8bbe\u7f6e\u5168\u5c40\u53d8\u91cf\r\n \r\n\r\n\r\n# 3. \u663e\u5f0f\u4e8b\u52a1\uff08\u663e\u5f0f\u5f00\u542f\u3001\u663e\u5f0f\u63d0\u4ea4\uff09\r\n\r\n\u901a\u8fc7\u6307\u5b9a\u4e8b\u52a1\u5f00\u59cb\u8bed\u53e5\u6765\u663e\u5f0f\u5f00\u542f\u4e8b\u52a1\u6765\u4f5c\u4e3a\u5f00\u59cb\uff0c\u5e76\u7531\u4ee5\u63d0\u4ea4\u547d\u4ee4\u6216\u8005\u56de\u6eda\u547d\u4ee4\u6765\u63d0\u4ea4\u6216\u8005\u56de\u6eda\u4e8b\u52a1\u4f5c\u4e3a\u7ed3\u675f\u7684\u4e00\u6bb5\u4ee3\u7801\u5c31\u662f\u4e00\u4e2a\u7528\u6237\u5b9a\u4e49\u7684\u663e\u5f0f\u4e8b\u52a1\u3002SQL SERVER\u3001MYSQL\u548cORACLE\u90fd\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u6765\u5f00\u59cb\u663e\u5f0f\u4e8b\u52a1\uff0c\u5177\u4f53\u5982\u4e0b\uff1a\r\n\r\n1\uff09SQL SERVER \u4ee5BEGIN [ TRAN | TRANSACTION ] \u4f5c\u4e3a\u5f00\u59cb\uff0c\u4ee5COMMIT [ WORK | TRAN | TRANSACTION ] \u6216\u8005 ROLLBACK  [ WORK | TRAN | TRANSACTION ] \u4f5c\u4e3a\u7ed3\u675f\u3002\r\n\r\n2\uff09MYSQL \u4ee5START TRANSACTION | BEGIN [WORK]\u4f5c\u4e3a\u5f00\u59cb\uff0c\u4ee5COMMIT [ WORK ] \u6216\u8005 ROLLBACK  [ WORK ] \u4f5c\u4e3a\u7ed3\u675f\u3002\r\n\r\n3\uff09ORACLE\u4e8b\u52a1\u8d77\u59cb\u4e8e\u7b2c\u4e00\u6761SQL\u8bed\u53e5\u7684\u6267\u884c\uff0c\u4e0d\u9700\u8981\u7279\u522b\u6307\u5b9a\u4e8b\u52a1\u7684\u5f00\u59cb\u548c\u7ed3\u675f\uff0c\u4e00\u4e2a\u4e8b\u52a1\u7ed3\u675f\u5c31\u610f\u5473\u7740\u4e0b\u4e00\u4e8b\u52a1\u5f00\u59cb\u3002\u4ee5COMMIT\u6216\u4e0d\u5e26\u6709SAVEPOINT\u5b50\u53e5\u7684ROLLBACK\u547d\u4ee4\u4f5c\u4e3a\u7ed3\u675f\u3002<\/pre>\n
\u6848\u4f8b\uff1a<\/p>\n
create table user(\r\nid int primary key auto_increment,\r\nname char(32),\r\nbalance int\r\n);\r\n\r\ninsert into user(name,balance)\r\nvalues\r\n('wsb',1000),\r\n('egon',1000),\r\n('ysb',1000);\r\n\r\n#\u539f\u5b50\u64cd\u4f5c\r\nstart transaction;\r\nupdate user set balance=900 where name='wsb'; #\u4e70\u652f\u4ed8100\u5143\r\nupdate user set balance=1010 where name='egon'; #\u4e2d\u4ecb\u62ff\u8d7010\u5143\r\nupdate user set balance=1090 where name='ysb'; #\u5356\u5bb6\u62ff\u523090\u5143\r\ncommit;\r\n\r\n#\u51fa\u73b0\u5f02\u5e38\uff0c\u56de\u6eda\u5230\u521d\u59cb\u72b6\u6001\r\nstart transaction;\r\nupdate user set balance=900 where name='wsb'; #\u4e70\u652f\u4ed8100\u5143\r\nupdate user set balance=1010 where name='egon'; #\u4e2d\u4ecb\u62ff\u8d7010\u5143\r\nuppdate user set balance=1090 where name='ysb'; #\u5356\u5bb6\u62ff\u523090\u5143,\u51fa\u73b0\u5f02\u5e38\u6ca1\u6709\u62ff\u5230\r\nrollback;\r\ncommit;\r\nmysql> select * from user;\r\n+----+------+---------+\r\n| id | name | balance |\r\n+----+------+---------+\r\n|  1 | wsb  |    1000 |\r\n|  2 | egon |    1000 |\r\n|  3 | ysb  |    1000 |\r\n+----+------+---------+\r\n3 rows in set (0.00 sec)<\/pre>\n
pymysql\u5b9e\u73b0\u4e8b\u52a1\u5904\u7406<\/span><\/div>\n
\n
try:\r\n    cursor.execute(sql_1)  \r\n    cursor.execute(sql_2)  \r\n    cursor.execute(sql_3)  \r\nexcept Exception as e:\r\n    connect.rollback()  # \u4e8b\u52a1\u56de\u6eda\r\n    print('\u4e8b\u52a1\u5904\u7406\u5931\u8d25', e)\r\nelse:\r\n    connect.commit()  # \u4e8b\u52a1\u63d0\u4ea4\r\n    print('\u4e8b\u52a1\u5904\u7406\u6210\u529f', cursor.rowcount)# \u5173\u95ed\u8fde\u63a5\r\ncursor.close()\r\nconnect.close()<\/pre>\n<\/div>\n
\u56db \u4e8b\u52a1\u4fdd\u5b58\u70b9<\/h3>\n
savepoint\u548c\u865a\u62df\u673a\u4e2d\u7684\u5feb\u7167\u7c7b\u4f3c\uff0c\u7528\u4e8e\u4e8b\u52a1\u4e2d\uff0c\u6ca1\u8bbe\u7f6e\u4e00\u4e2asavepoint\u5c31\u662f\u4e00\u4e2a\u4fdd\u5b58\u70b9\uff0c\u5f53\u4e8b\u52a1\u7ed3\u675f\u65f6\u4f1a\u81ea\u52a8\u5220\u9664\u5b9a\u4e49\u7684\u6240\u6709\u4fdd\u5b58\u70b9\uff0c\u5728\u4e8b\u52a1\u6ca1\u6709\u7ed3\u675f\u524d\u53ef\u4ee5\u56de\u9000\u5230\u4efb\u610f\u4fdd\u5b58\u70b9<\/p>\n
\n
1\u3001\u8bbe\u7f6e\u4fdd\u5b58\u70b9savepoint \u4fdd\u5b58\u70b9\u540d\u5b57\r\n2\u3001\u56de\u6eda\u5230\u67d0\u4e2a\u4fdd\u5b58\u70b9\uff0c\u8be5\u4fdd\u5b58\u70b9\u4e4b\u540e\u7684\u64cd\u4f5c\u65e0\u6548\uff0crollback \u67d0\u4e2a\u4fdd\u5b58\u70b9\u540d\r\n3\u3001\u53d6\u6d88\u5168\u90e8\u4e8b\u52a1\uff0c\u5220\u9664\u6240\u6709\u4fdd\u5b58\u70b9rollback\r\n\r\n# \u6ce8\u610f\uff1arollback\u548ccommit\u90fd\u4f1a\u7ed3\u675f\u6389\u4e8b\u52a1\uff0c\u8fd9\u4e4b\u540e\u65e0\u6cd5\u518d\u56de\u9000\u5230\u67d0\u4e2a\u4fdd\u5b58\u70b9<\/pre>\n<\/div>\n
 <\/p>\n
\u5b9e\u9a8c<\/p>\n
1\u3001\u8bbe\u7f6e\u4fdd\u5b58\u70b9<\/p>\n
\n
mysql> select * from employee;\r\n+----+-----------+-----+\r\n| id | name      | age |\r\n+----+-----------+-----+\r\n|  1 | egon      |  16 |\r\n|  2 | alex      |  18 |\r\n|  3 | wupeiqi   |  18 |\r\n|  4 | yuanhao   |  18 |\r\n|  5 | liwenzhou |  20 |\r\n+----+-----------+-----+\r\n5 rows in set (0.00 sec)\r\n\r\nmysql> begin;\r\nQuery OK, 0 rows affected (0.00 sec)\r\n\r\nmysql> update employee set name=\"EGON_NB\" where id=1;\r\nQuery OK, 1 row affected (0.00 sec)\r\nRows matched: 1  Changed: 1  Warnings: 0\r\n\r\nmysql> update employee set name=\"ALEX_SB\" where id=2;\r\nQuery OK, 1 row affected (0.00 sec)\r\nRows matched: 1  Changed: 1  Warnings: 0\r\n\r\nmysql> update employee set name=\"WXX\" where id=3;\r\nQuery OK, 1 row affected (0.01 sec)\r\nRows matched: 1  Changed: 1  Warnings: 0\r\n\r\nmysql> savepoint one;  -- \u4fdd\u5b58\u70b9one\r\nQuery OK, 0 rows affected (0.00 sec)\r\n\r\nmysql> select * from employee;\r\n+----+-----------+-----+\r\n| id | name      | age |\r\n+----+-----------+-----+\r\n|  1 | EGON_NB   |  16 |\r\n|  2 | ALEX_SB   |  18 |\r\n|  3 | WXX       |  18 |\r\n|  4 | yuanhao   |  18 |\r\n|  5 | liwenzhou |  20 |\r\n+----+-----------+-----+\r\n5 rows in set (0.00 sec)\r\n\r\nmysql> update employee set name=\"yxx_sb\" where id=4;\r\nQuery OK, 1 row affected (0.00 sec)\r\nRows matched: 1  Changed: 1  Warnings: 0\r\n\r\nmysql> update employee set name=\"lxx\" where id=5;\r\nQuery OK, 1 row affected (0.00 sec)\r\nRows matched: 1  Changed: 1  Warnings: 0\r\n\r\nmysql> savepoint two;  -- \u4fdd\u5b58\u70b9two\r\nQuery OK, 0 rows affected (0.00 sec)\r\n\r\nmysql> select * from employee;\r\n+----+---------+-----+\r\n| id | name    | age |\r\n+----+---------+-----+\r\n|  1 | EGON_NB |  16 |\r\n|  2 | ALEX_SB |  18 |\r\n|  3 | WXX     |  18 |\r\n|  4 | yxx_sb  |  18 |\r\n|  5 | lxx     |  20 |\r\n+----+---------+-----+\r\n5 rows in set (0.00 sec)\r\n\r\nmysql> insert into employee values(6,\"egonxxx\",19);\r\nQuery OK, 1 row affected (0.00 sec)\r\n\r\nmysql> savepoint three;  -- \u4fdd\u5b58\u70b9three\r\nQuery OK, 0 rows affected (0.00 sec)\r\n\r\nmysql> select * from employee;\r\n+----+---------+-----+\r\n| id | name    | age |\r\n+----+---------+-----+\r\n|  1 | EGON_NB |  16 |\r\n|  2 | ALEX_SB |  18 |\r\n|  3 | WXX     |  18 |\r\n|  4 | yxx_sb  |  18 |\r\n|  5 | lxx     |  20 |\r\n|  6 | egonxxx |  19 |\r\n+----+---------+-----+\r\n6 rows in set (0.00 sec)\r\nmysql> insert into employee values(7,\"egon666\",20);\r\nQuery OK, 1 row affected (0.00 sec)\r\n\r\nmysql> savepoint four;  -- \u4fdd\u5b58\u70b9four\r\nQuery OK, 0 rows affected (0.00 sec)\r\n\r\nmysql> select * from employee;\r\n+----+---------+-----+\r\n| id | name    | age |\r\n+----+---------+-----+\r\n|  1 | EGON_NB |  16 |\r\n|  2 | ALEX_SB |  18 |\r\n|  3 | WXX     |  18 |\r\n|  4 | yxx_sb  |  18 |\r\n|  5 | lxx     |  20 |\r\n|  6 | egonxxx |  19 |\r\n|  7 | egon666 |  20 |\r\n+----+---------+-----+\r\n7 rows in set (0.00 sec)\r\n\r\nmysql><\/pre>\n<\/div>\n
\u56de\u9000\u5230\u6307\u5b9a\u4fdd\u5b58\u70b9\uff0c\u6ce8\u610f\u4e00\u65e6\u56de\u9000\u5230\u67d0\u4e2a\u4fdd\u5b58\u70b9\uff0c\u8be5\u4fdd\u5b58\u70b9\u4e4b\u540e\u7684\u64cd\u4f5c\u90fd\u64a4\u9500\u4e86\u5305\u62ec\u4fdd\u5b58\u70b9\uff0c\u4f8b\u5982<\/p>\n
\n
mysql> rollback to three;\r\nQuery OK, 0 rows affected (0.00 sec)\r\n\r\nmysql> select * from employee;\r\n+----+---------+-----+\r\n| id | name    | age |\r\n+----+---------+-----+\r\n|  1 | EGON_NB |  16 |\r\n|  2 | ALEX_SB |  18 |\r\n|  3 | WXX     |  18 |\r\n|  4 | yxx_sb  |  18 |\r\n|  5 | lxx     |  20 |\r\n|  6 | egonxxx |  19 |\r\n+----+---------+-----+\r\n6 rows in set (0.00 sec)\r\n\r\nmysql> rollback to four;  -- \u4fdd\u5b58\u70b9four\u4e0d\u590d\u5b58\u5728\r\nERROR 1305 (42000): SAVEPOINT four does not exist<\/pre>\n<\/div>\n
\u53ef\u4ee5\u8de8\u8d8an\u4e2a\u4fdd\u5b58\u70b9<\/p>\n
\n
mysql> rollback to one;\r\nQuery OK, 0 rows affected (0.00 sec)\r\n\r\nmysql> select * from employee;\r\n+----+-----------+-----+\r\n| id | name      | age |\r\n+----+-----------+-----+\r\n|  1 | EGON_NB   |  16 |\r\n|  2 | ALEX_SB   |  18 |\r\n|  3 | WXX       |  18 |\r\n|  4 | yuanhao   |  18 |\r\n|  5 | liwenzhou |  20 |\r\n+----+-----------+-----+\r\n5 rows in set (0.00 sec)<\/pre>\n<\/div>\n
\u56de\u9000\u6240\u6709<\/p>\n
\n
mysql> rollback;\r\nQuery OK, 0 rows affected (0.01 sec)\r\n\r\nmysql> select * from employee;\r\n+----+-----------+-----+\r\n| id | name      | age |\r\n+----+-----------+-----+\r\n|  1 | egon      |  16 |\r\n|  2 | alex      |  18 |\r\n|  3 | wupeiqi   |  18 |\r\n|  4 | yuanhao   |  18 |\r\n|  5 | liwenzhou |  20 |\r\n+----+-----------+-----+\r\n5 rows in set (0.00 sec)<\/pre>\n<\/div>\n
\u6700\u540e\u603b\u7ed3\u4e00\u4e0b\u4e8b\u52a1\u7684\u63a7\u5236\u8bed\u53e5<\/p>\n
\n
START TRANSACTION\uff08\u6216 BEGIN\uff09\uff1a\u663e\u5f0f\u5f00\u59cb\u4e00\u4e2a\u65b0\u4e8b\u52a1                #\u5f00\u542f\u4e8b\u52a1\r\nSAVEPOINT\uff1a\u5206\u914d\u4e8b\u52a1\u8fc7\u7a0b\u4e2d\u7684\u4e00\u4e2a\u4f4d\u7f6e\uff0c\u4ee5\u4f9b\u5c06\u6765\u5f15\u7528                  #\u4e34\u65f6\u5b58\u6863\r\nCOMMIT\uff1a\u6c38\u4e45\u8bb0\u5f55\u5f53\u524d\u4e8b\u52a1\u6240\u505a\u7684\u66f4\u6539                               #\u63d0\u4ea4\r\nROLLBACK\uff1a\u53d6\u6d88\u5f53\u524d\u4e8b\u52a1\u6240\u505a\u7684\u66f4\u6539                                #\u56de\u6eda\r\nROLLBACK TO SAVEPOINT\uff1a\u53d6\u6d88\u5728 savepoint \u4e4b\u540e\u6267\u884c\u7684\u66f4\u6539          #\u56de\u5230\u5b58\u6863\u70b9\r\nRELEASE SAVEPOINT\uff1a\u5220\u9664 savepoint \u6807\u8bc6\u7b26                       #\u5220\u9664\u4e34\u65f6\u5b58\u6863\r\nSET AUTOCOMMIT\uff1a\u4e3a\u5f53\u524d\u8fde\u63a5\u7981\u7528\u6216\u542f\u7528\u9ed8\u8ba4 autocommit \u6a21\u5f0f<\/pre>\n<\/div>\n
\u4e94 \u4e8b\u52a1\u7684\u4f7f\u7528\u539f\u5219<\/h3>\n
    \n
  1. \u4fdd\u6301\u4e8b\u52a1\u77ed\u5c0f<\/strong><\/li>\n
  2. \u5c3d\u91cf\u907f\u514d\u4e8b\u52a1\u4e2drollback<\/strong><\/li>\n
  3. \u5c3d\u91cf\u907f\u514dsavepoint<\/strong><\/li>\n
  4. \u663e\u5f0f\u58f0\u660e\u6253\u5f00\u4e8b\u52a1<\/strong><\/li>\n
  5. \u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u4f9d\u8d56\u4e8e\u60b2\u89c2\u9501\uff0c\u4e3a\u541e\u5410\u91cf\u8981\u6c42\u82db\u523b\u7684\u4e8b\u52a1\u8003\u8651\u4e50\u89c2\u9501<\/strong><\/li>\n
  6. \u9501\u7684\u884c\u8d8a\u5c11\u8d8a\u597d\uff0c\u9501\u7684\u65f6\u95f4\u8d8a\u77ed\u8d8a\u597d<\/strong><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
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