{"id":168357,"date":"2024-11-06T11:42:21","date_gmt":"2024-11-06T03:42:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168357\/"},"modified":"2024-11-06T11:42:22","modified_gmt":"2024-11-06T03:42:22","slug":"sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%9c%a8%e7%b7%9a%e6%93%8d%e4%bd%9c%e6%89%8b%e5%86%8a%ef%bc%9a%e5%bf%ab%e9%80%9f%e6%9f%a5%e8%a9%a2%e3%80%81%e5%82%99%e4%bb%bd%e8%88%87%e6%81%a2%e5%be%a9%e6%93%8d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168357\/","title":{"rendered":"SQL \u6578\u64da\u5eab\u5728\u7dda\u64cd\u4f5c\u624b\u518a\uff1a\u5feb\u901f\u67e5\u8a62\u3001\u5099\u4efd\u8207\u6062\u5fa9\u64cd\u4f5c\u8a73\u89e3 (sql \u6578\u64da\u5eab\u5728\u7dda\u64cd\u4f5c\u624b\u518a)"},"content":{"rendered":"

SQL \u6578\u64da\u5eab\u5728\u7dda\u64cd\u4f5c\u624b\u518a\uff1a\u5feb\u901f\u67e5\u8a62\u3001\u5099\u4efd\u8207\u6062\u5fa9\u64cd\u4f5c\u8a73\u89e3<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL \u6578\u64da\u5eab\u6210\u70ba\u4e86\u8a31\u591a\u4f01\u696d\u548c\u958b\u767c\u8005\u7684\u9996\u9078\u3002\u7121\u8ad6\u662f\u7528\u65bc\u5b58\u5132\u7528\u6236\u6578\u64da\u3001\u4ea4\u6613\u8a18\u9304\u9084\u662f\u5176\u4ed6\u91cd\u8981\u4fe1\u606f\uff0c\u638c\u63e1 SQL \u6578\u64da\u5eab\u7684\u64cd\u4f5c\u6280\u5de7\u5c0d\u65bc\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u53ef\u7528\u6027\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39 SQL \u6578\u64da\u5eab\u7684\u5feb\u901f\u67e5\u8a62\u3001\u5099\u4efd\u8207\u6062\u5fa9\u64cd\u4f5c\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u6709\u6548\u5730\u7ba1\u7406\u5176\u6578\u64da\u5eab\u3002<\/p>\n

\u5feb\u901f\u67e5\u8a62\u64cd\u4f5c<\/h2>\n

SQL \u67e5\u8a62\u662f\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6578\u64da\u7684\u4e3b\u8981\u65b9\u5f0f\u3002\u4f7f\u7528 SQL \u8a9e\u8a00\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u5f9e\u4e00\u500b\u6216\u591a\u500b\u8868\u4e2d\u63d0\u53d6\u6240\u9700\u7684\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u67e5\u8a62\u64cd\u4f5c\u793a\u4f8b\uff1a<\/p>\n

\u9078\u64c7\u67e5\u8a62<\/h3>\n
SELECT * FROM users;<\/code><\/pre>\n
\u4e0a\u8ff0\u67e5\u8a62\u5c07\u5f9e\u540d\u70ba users<\/code> \u7684\u8868\u4e2d\u9078\u64c7\u6240\u6709\u5217\u7684\u6240\u6709\u884c\u3002\u60a8\u4e5f\u53ef\u4ee5\u6307\u5b9a\u7279\u5b9a\u7684\u5217\uff1a<\/p>\n
SELECT username, email FROM users;<\/code><\/pre>\n
\u689d\u4ef6\u67e5\u8a62<\/h3>\n
\u4f7f\u7528 WHERE<\/code> \u5b50\u53e5\u53ef\u4ee5\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u904e\u6ffe\u7d50\u679c\uff1a<\/p>\n
SELECT * FROM users WHERE age > 18;<\/code><\/pre>\n
\u6392\u5e8f\u67e5\u8a62<\/h3>\n
\u4f7f\u7528 ORDER BY<\/code> \u5b50\u53e5\u53ef\u4ee5\u5c0d\u67e5\u8a62\u7d50\u679c\u9032\u884c\u6392\u5e8f\uff1a<\/p>\n
SELECT * FROM users ORDER BY created_at DESC;<\/code><\/pre>\n
\u5099\u4efd\u64cd\u4f5c<\/h2>\n
\u5b9a\u671f\u5099\u4efd\u6578\u64da\u5eab\u662f\u78ba\u4fdd\u6578\u64da\u5b89\u5168\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 SQL \u547d\u4ee4\u9032\u884c\u6578\u64da\u5eab\u5099\u4efd\u7684\u57fa\u672c\u65b9\u6cd5\uff1a<\/p>\n
\u4f7f\u7528 mysqldump \u9032\u884c\u5099\u4efd<\/h3>\n
\u5c0d\u65bc MySQL \u6578\u64da\u5eab\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 mysqldump<\/code> \u5de5\u5177\u9032\u884c\u5099\u4efd\uff1a<\/p>\n
mysqldump -u username -p database_name > backup_file.sql<\/code><\/pre>\n
\u9019\u689d\u547d\u4ee4\u5c07\u6703\u63d0\u793a\u60a8\u8f38\u5165\u5bc6\u78bc\uff0c\u4e26\u5c07\u6307\u5b9a\u6578\u64da\u5eab\u7684\u5099\u4efd\u4fdd\u5b58\u5230 backup_file.sql<\/code> \u6587\u4ef6\u4e2d\u3002<\/p>\n
\u6062\u5fa9\u64cd\u4f5c<\/h2>\n
\u5728\u6578\u64da\u4e1f\u5931\u6216\u640d\u58de\u7684\u60c5\u6cc1\u4e0b\uff0c\u6062\u5fa9\u6578\u64da\u5eab\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u5f9e\u5099\u4efd\u6587\u4ef6\u6062\u5fa9\u6578\u64da\u5eab\u7684\u6b65\u9a5f\uff1a<\/p>\n
\u4f7f\u7528 mysql \u547d\u4ee4\u6062\u5fa9<\/h3>\n
\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5f9e\u5099\u4efd\u6587\u4ef6\u4e2d\u6062\u5fa9\u6578\u64da\u5eab\uff1a<\/p>\n
mysql -u username -p database_name < backup_file.sql<\/code><\/pre>\n
\u9019\u689d\u547d\u4ee4\u5c07\u6703\u63d0\u793a\u60a8\u8f38\u5165\u5bc6\u78bc\uff0c\u4e26\u5c07\u5099\u4efd\u6587\u4ef6\u4e2d\u7684\u6578\u64da\u5c0e\u5165\u5230\u6307\u5b9a\u7684\u6578\u64da\u5eab\u4e2d\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u638c\u63e1 SQL \u6578\u64da\u5eab\u7684\u67e5\u8a62\u3001\u5099\u4efd\u8207\u6062\u5fa9\u64cd\u4f5c\u5c0d\u65bc\u4efb\u4f55\u958b\u767c\u8005\u6216\u6578\u64da\u7ba1\u7406\u8005\u4f86\u8aaa\u90fd\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u901a\u904e\u672c\u6587\u4ecb\u7d39\u7684\u57fa\u672c\u64cd\u4f5c\uff0c\u60a8\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u4fdd\u8b77\u60a8\u7684\u6578\u64da\u3002\u7121\u8ad6\u662f\u4f7f\u7528 \u9999\u6e2f VPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u78ba\u4fdd\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u5b89\u5168\u4e14\u9ad8\u6548\u662f\u6210\u529f\u7684\u95dc\u9375\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22SQL\u6578\u64da\u5eab\u5728\u7dda\u64cd\u4f5c\u624b\u518a\uff0c\u5feb\u901f\u67e5\u8a62\u3001\u5099\u4efd\u8207\u6062\u5fa9\u64cd\u4f5c\u8a73\u89e3\uff0c\u52a9\u60a8\u9ad8\u6548\u7ba1\u7406\u6578\u64da\u5eab\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-168357","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168357","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=168357"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168357\/revisions"}],"predecessor-version":[{"id":168358,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168357\/revisions\/168358"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}