{"id":75786,"date":"2024-10-16T01:13:16","date_gmt":"2024-10-15T17:13:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/75786\/"},"modified":"2024-10-16T01:13:16","modified_gmt":"2024-10-15T17:13:16","slug":"mysql-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a%e6%9c%83%e5%a4%b1%e6%95%97%ef%bc%9f%e7%82%ba%e4%bb%80%e9%ba%bc%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/75786\/","title":{"rendered":"MySQL \u63d2\u5165\u6578\u64da\u6703\u5931\u6557\uff1f\u70ba\u4ec0\u9ebc\uff1f"},"content":{"rendered":"

MySQL \u63d2\u5165\u6578\u64da\u6703\u5931\u6557\uff1f\u70ba\u4ec0\u9ebc\uff1f<\/h1>\n

\u5728\u4f7f\u7528 MySQL \u6578\u64da\u5eab\u6642\uff0c\u63d2\u5165\u6578\u64da\u662f\u4e00\u500b\u5e38\u898b\u7684\u64cd\u4f5c\u3002\u7136\u800c\uff0c\u6709\u6642\u5019\u9019\u500b\u904e\u7a0b\u53ef\u80fd\u6703\u5931\u6557\uff0c\u5c0e\u81f4\u6578\u64da\u7121\u6cd5\u6210\u529f\u5beb\u5165\u6578\u64da\u5eab\u3002\u672c\u6587\u5c07\u63a2\u8a0e MySQL \u63d2\u5165\u6578\u64da\u5931\u6557\u7684\u5e38\u898b\u539f\u56e0\uff0c\u4e26\u63d0\u4f9b\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

1. \u6578\u64da\u985e\u578b\u4e0d\u5339\u914d<\/h2>\n

MySQL \u4e2d\u7684\u6bcf\u500b\u5217\u90fd\u6709\u7279\u5b9a\u7684\u6578\u64da\u985e\u578b\u3002\u5982\u679c\u63d2\u5165\u7684\u6578\u64da\u985e\u578b\u8207\u5217\u7684\u5b9a\u7fa9\u4e0d\u5339\u914d\uff0c\u5247\u6703\u5c0e\u81f4\u63d2\u5165\u5931\u6557\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u500b\u5217\u5b9a\u7fa9\u70ba\u6574\u6578\u985e\u578b\uff0c\u4f46\u4f60\u5617\u8a66\u63d2\u5165\u4e00\u500b\u5b57\u7b26\u4e32\uff0c\u5247\u6703\u51fa\u73fe\u932f\u8aa4\u3002<\/p>\n

INSERT INTO users (id, name) VALUES ('abc', 'John Doe'); -- \u9019\u88e1 id \u61c9\u8a72\u662f\u6574\u6578\u985e\u578b<\/code><\/pre>\n
2. \u552f\u4e00\u7d04\u675f\u9055\u53cd<\/h2>\n
\u5982\u679c\u4e00\u500b\u5217\u88ab\u8a2d\u7f6e\u70ba\u552f\u4e00\uff08UNIQUE\uff09\uff0c\u90a3\u9ebc\u5728\u63d2\u5165\u6578\u64da\u6642\uff0c\u5fc5\u9808\u78ba\u4fdd\u8a72\u5217\u7684\u503c\u5728\u6574\u500b\u8868\u4e2d\u662f\u552f\u4e00\u7684\u3002\u5982\u679c\u63d2\u5165\u7684\u503c\u5df2\u7d93\u5b58\u5728\u65bc\u8a72\u5217\u4e2d\uff0c\u5247\u6703\u5c0e\u81f4\u63d2\u5165\u5931\u6557\u3002<\/p>\n
INSERT INTO users (email) VALUES ('john@example.com'); -- \u5982\u679c\u8a72 email \u5df2\u5b58\u5728\uff0c\u5247\u6703\u5931\u6557<\/code><\/pre>\n
3. \u5916\u9375\u7d04\u675f\u9055\u53cd<\/h2>\n
\u5916\u9375\u7d04\u675f\u7528\u65bc\u7dad\u8b77\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u5982\u679c\u4f60\u5617\u8a66\u63d2\u5165\u4e00\u689d\u8a18\u9304\uff0c\u5176\u4e2d\u7684\u5916\u9375\u503c\u5728\u53c3\u8003\u8868\u4e2d\u4e0d\u5b58\u5728\uff0c\u5247\u6703\u5c0e\u81f4\u63d2\u5165\u5931\u6557\u3002<\/p>\n
INSERT INTO orders (user_id) VALUES (999); -- \u5982\u679c user_id 999 \u5728 users \u8868\u4e2d\u4e0d\u5b58\u5728\uff0c\u5247\u6703\u5931\u6557<\/code><\/pre>\n
4. NULL \u503c\u7d04\u675f<\/h2>\n
\u5982\u679c\u67d0\u500b\u5217\u88ab\u8a2d\u7f6e\u70ba NOT NULL\uff0c\u5247\u5728\u63d2\u5165\u6578\u64da\u6642\u5fc5\u9808\u63d0\u4f9b\u8a72\u5217\u7684\u503c\u3002\u5982\u679c\u672a\u63d0\u4f9b\u503c\uff0c\u5247\u6703\u5c0e\u81f4\u63d2\u5165\u5931\u6557\u3002<\/p>\n
INSERT INTO users (name) VALUES (NULL); -- \u5982\u679c name \u5217\u8a2d\u7f6e\u70ba NOT NULL\uff0c\u5247\u6703\u5931\u6557<\/code><\/pre>\n
5. \u6578\u64da\u5eab\u9023\u63a5\u554f\u984c<\/h2>\n
\u6709\u6642\u5019\uff0c\u63d2\u5165\u6578\u64da\u5931\u6557\u7684\u539f\u56e0\u53ef\u80fd\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u6709\u95dc\u3002\u5982\u679c\u6578\u64da\u5eab\u670d\u52d9\u5668\u7121\u6cd5\u8a2a\u554f\uff0c\u6216\u8005\u9023\u63a5\u8d85\u6642\uff0c\u5247\u6703\u5c0e\u81f4\u63d2\u5165\u64cd\u4f5c\u5931\u6557\u3002<\/p>\n
6. SQL \u8a9e\u6cd5\u932f\u8aa4<\/h2>\n
\u5982\u679c SQL \u8a9e\u53e5\u7684\u8a9e\u6cd5\u4e0d\u6b63\u78ba\uff0c\u5247\u6703\u5c0e\u81f4\u63d2\u5165\u5931\u6557\u3002\u9019\u53ef\u80fd\u662f\u7531\u65bc\u62fc\u5beb\u932f\u8aa4\u3001\u7f3a\u5c11\u5fc5\u8981\u7684\u95dc\u9375\u5b57\u6216\u4e0d\u6b63\u78ba\u7684\u6a19\u8b58\u7b26\u7b49\u539f\u56e0\u9020\u6210\u7684\u3002<\/p>\n
INSERT INTO users name VALUES ('John Doe'); -- \u61c9\u8a72\u662f INSERT INTO users (name) VALUES ('John Doe');<\/code><\/pre>\n
7. \u4e8b\u52d9\u672a\u63d0\u4ea4<\/h2>\n
\u5728\u4f7f\u7528\u4e8b\u52d9\u7684\u60c5\u6cc1\u4e0b\uff0c\u5982\u679c\u672a\u6b63\u78ba\u63d0\u4ea4\u4e8b\u52d9\uff0c\u5247\u63d2\u5165\u7684\u6578\u64da\u5c07\u4e0d\u6703\u88ab\u5beb\u5165\u6578\u64da\u5eab\u3002\u78ba\u4fdd\u5728\u4e8b\u52d9\u5b8c\u6210\u5f8c\u4f7f\u7528 COMMIT \u547d\u4ee4\u63d0\u4ea4\u4e8b\u52d9\u3002<\/p>\n
START TRANSACTION; \nINSERT INTO users (name) VALUES ('John Doe'); \n-- \u5fd8\u8a18\u63d0\u4ea4\nROLLBACK; -- \u5c07\u4e0d\u6703\u4fdd\u5b58\u63d2\u5165\u7684\u6578\u64da<\/code><\/pre>\n
\u7d50\u8ad6<\/h2>\n
MySQL \u63d2\u5165\u6578\u64da\u5931\u6557\u7684\u539f\u56e0\u6709\u5f88\u591a\uff0c\u5f9e\u6578\u64da\u985e\u578b\u4e0d\u5339\u914d\u5230\u5916\u9375\u7d04\u675f\u9055\u53cd\u7b49\u3002\u4e86\u89e3\u9019\u4e9b\u5e38\u898b\u554f\u984c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u6392\u67e5\u548c\u89e3\u6c7a\u554f\u984c\u3002\u5728\u4f7f\u7528 MySQL \u6578\u64da\u5eab\u6642\uff0c\u5efa\u8b70\u5b9a\u671f\u6aa2\u67e5\u6578\u64da\u5eab\u7684\u8a2d\u7f6e\u548c\u7d04\u675f\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002<\/p>\n
\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684 \u9999\u6e2f VPS<\/a> \u670d\u52d9\u4f86\u904b\u884c\u60a8\u7684 MySQL \u6578\u64da\u5eab\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u6211\u5011\u63d0\u4f9b\u9ad8\u6548\u80fd\u7684 \u4e91\u4f3a\u670d\u5668<\/a>\uff0c\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3 MySQL \u63d2\u5165\u6578\u64da\u5931\u6557\u7684\u539f\u56e0\uff0c\u5305\u62ec\u6578\u64da\u985e\u578b\u4e0d\u5339\u914d\u3001\u4e3b\u9375\u885d\u7a81\u548c\u7d04\u675f\u689d\u4ef6\u7b49\u554f\u984c\uff0c\u52a9\u4f60\u5feb\u901f\u6392\u67e5\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-75786","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75786","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=75786"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75786\/revisions"}],"predecessor-version":[{"id":75787,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75786\/revisions\/75787"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=75786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=75786"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=75786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}