{"id":143775,"date":"2024-11-01T01:08:22","date_gmt":"2024-10-31T17:08:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/143775\/"},"modified":"2024-11-01T01:08:23","modified_gmt":"2024-10-31T17:08:23","slug":"sql-%e6%89%93%e9%96%8b%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9a%e5%bf%ab%e9%80%9f%e9%ab%98%e6%95%88%e8%99%95%e7%90%86%e6%95%b8%e6%93%9a%ef%bc%88sql-%e8%aa%9e%e5%8f%a5%e6%89%93%e9%96%8b%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/143775\/","title":{"rendered":"SQL \u6253\u958b\u6578\u64da\u5eab\uff1a\u5feb\u901f\u9ad8\u6548\u8655\u7406\u6578\u64da\uff08sql \u8a9e\u53e5\u6253\u958b\u6578\u64da\u5eab\uff09"},"content":{"rendered":"

SQL \u6253\u958b\u6578\u64da\u5eab\uff1a\u5feb\u901f\u9ad8\u6548\u8655\u7406\u6578\u64da<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u7684\u4e3b\u8981\u5de5\u5177\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 SQL \u6253\u958b\u6578\u64da\u5eab\uff0c\u4e26\u5feb\u901f\u9ad8\u6548\u5730\u8655\u7406\u6578\u64da\u3002<\/p>\n

\u4ec0\u9ebc\u662f SQL\uff1f<\/h2>\n

SQL \u662f\u4e00\u7a2e\u5c08\u9580\u7528\u65bc\u7ba1\u7406\u548c\u64cd\u4f5c\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7684\u7de8\u7a0b\u8a9e\u8a00\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u7d44\u6a19\u6e96\u7684\u8a9e\u6cd5\u548c\u547d\u4ee4\uff0c\u8b93\u7528\u6236\u80fd\u5920\u5275\u5efa\u3001\u8b80\u53d6\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002SQL \u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\u5176\u7c21\u55ae\u6027\u548c\u5f37\u5927\u529f\u80fd\uff0c\u4f7f\u5f97\u7528\u6236\u80fd\u5920\u8f15\u9b06\u5730\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002<\/p>\n

\u5982\u4f55\u6253\u958b\u6578\u64da\u5eab<\/h2>\n

\u5728\u4f7f\u7528 SQL \u9032\u884c\u6578\u64da\u64cd\u4f5c\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u6253\u958b\u6578\u64da\u5eab\u3002\u9019\u901a\u5e38\u6d89\u53ca\u5230\u9023\u63a5\u5230\u6578\u64da\u5eab\u670d\u52d9\u5668\u4e26\u9078\u64c7\u8981\u64cd\u4f5c\u7684\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 SQL \u6253\u958b\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n

1. \u9023\u63a5\u5230\u6578\u64da\u5eab\u670d\u52d9\u5668<\/h3>\n

\u8981\u9023\u63a5\u5230\u6578\u64da\u5eab\u670d\u52d9\u5668\uff0c\u60a8\u9700\u8981\u63d0\u4f9b\u670d\u52d9\u5668\u7684\u5730\u5740\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 MySQL \u7684\u793a\u4f8b\uff1a<\/p>\n

mysql -h localhost -u username -p<\/code><\/pre>\n
\u5728\u9019\u88e1\uff0c`-h` \u53c3\u6578\u6307\u5b9a\u4e86\u670d\u52d9\u5668\u5730\u5740\uff0c`-u` \u53c3\u6578\u6307\u5b9a\u4e86\u7528\u6236\u540d\uff0c`-p` \u53c3\u6578\u5247\u63d0\u793a\u7528\u6236\u8f38\u5165\u5bc6\u78bc\u3002<\/p>\n
2. \u9078\u64c7\u6578\u64da\u5eab<\/h3>\n
\u9023\u63a5\u6210\u529f\u5f8c\uff0c\u60a8\u9700\u8981\u9078\u64c7\u8981\u64cd\u4f5c\u7684\u6578\u64da\u5eab\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b SQL \u8a9e\u53e5\u4f86\u5be6\u73fe\uff1a<\/p>\n
USE database_name;<\/code><\/pre>\n
\u5728\u9019\u88e1\uff0c`database_name` \u662f\u60a8\u8981\u9078\u64c7\u7684\u6578\u64da\u5eab\u7684\u540d\u7a31\u3002<\/p>\n
\u9ad8\u6548\u8655\u7406\u6578\u64da\u7684 SQL \u8a9e\u53e5<\/h2>\n
\u4e00\u65e6\u6210\u529f\u6253\u958b\u6578\u64da\u5eab\uff0c\u60a8\u5c31\u53ef\u4ee5\u4f7f\u7528\u5404\u7a2e SQL \u8a9e\u53e5\u4f86\u9ad8\u6548\u5730\u8655\u7406\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684 SQL \u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n
1. \u67e5\u8a62\u6578\u64da<\/h3>\n
\u4f7f\u7528 `SELECT` \u8a9e\u53e5\u53ef\u4ee5\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\uff1a<\/p>\n
SELECT * FROM table_name;<\/code><\/pre>\n
\u9019\u5c07\u8fd4\u56de `table_name` \u8868\u4e2d\u7684\u6240\u6709\u6578\u64da\u3002<\/p>\n
2. \u63d2\u5165\u6578\u64da<\/h3>\n
\u8981\u5411\u6578\u64da\u5eab\u4e2d\u63d2\u5165\u65b0\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528 `INSERT INTO` \u8a9e\u53e5\uff1a<\/p>\n
INSERT INTO table_name (column1, column2) VALUES (value1, value2);<\/code><\/pre>\n
\u9019\u5c07\u5728 `table_name` \u8868\u4e2d\u63d2\u5165\u4e00\u884c\u65b0\u6578\u64da\u3002<\/p>\n
3. \u66f4\u65b0\u6578\u64da<\/h3>\n
\u4f7f\u7528 `UPDATE` \u8a9e\u53e5\u53ef\u4ee5\u66f4\u65b0\u73fe\u6709\u6578\u64da\uff1a<\/p>\n
UPDATE table_name SET column1 = value1 WHERE condition;<\/code><\/pre>\n
\u9019\u5c07\u6839\u64da\u6307\u5b9a\u7684\u689d\u4ef6\u66f4\u65b0 `table_name` \u8868\u4e2d\u7684\u6578\u64da\u3002<\/p>\n
4. \u522a\u9664\u6578\u64da<\/h3>\n
\u8981\u522a\u9664\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528 `DELETE` \u8a9e\u53e5\uff1a<\/p>\n
DELETE FROM table_name WHERE condition;<\/code><\/pre>\n
\u9019\u5c07\u6839\u64da\u6307\u5b9a\u7684\u689d\u4ef6\u522a\u9664 `table_name` \u8868\u4e2d\u7684\u6578\u64da\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u4f7f\u7528 SQL \u6253\u958b\u6578\u64da\u5eab\u4e26\u9ad8\u6548\u8655\u7406\u6578\u64da\u662f\u6578\u64da\u7ba1\u7406\u7684\u91cd\u8981\u6280\u80fd\u3002\u901a\u904e\u638c\u63e1\u57fa\u672c\u7684 SQL \u8a9e\u53e5\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u9032\u884c\u6578\u64da\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u64cd\u4f5c\u3002\u7121\u8ad6\u60a8\u662f\u6578\u64da\u5206\u6790\u5e2b\u3001\u958b\u767c\u4eba\u54e1\u9084\u662f\u6578\u64da\u5eab\u7ba1\u7406\u54e1\uff0c\u719f\u6089 SQL \u90fd\u5c07\u5927\u5927\u63d0\u9ad8\u60a8\u7684\u5de5\u4f5c\u6548\u7387\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 \u9999\u6e2f VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u5176\u4ed6\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 \u4f3a\u670d\u5668<\/a> \u5c07\u6709\u52a9\u65bc\u63d0\u5347\u60a8\u7684\u696d\u52d9\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5feb\u901f\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528 SQL \u8a9e\u53e5\u6253\u958b\u6578\u64da\u5eab\uff0c\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u8655\u7406\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u80fd\u529b\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-143775","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143775","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=143775"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143775\/revisions"}],"predecessor-version":[{"id":143776,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/143775\/revisions\/143776"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=143775"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=143775"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=143775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}