{"id":76870,"date":"2024-10-16T10:07:15","date_gmt":"2024-10-16T02:07:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76870\/"},"modified":"2024-10-16T10:07:15","modified_gmt":"2024-10-16T02:07:15","slug":"mysql%e6%a2%9d%e4%bb%b6%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5%e7%9a%84%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76870\/","title":{"rendered":"MySQL\u689d\u4ef6\u67e5\u8a62\u8a9e\u53e5\u7684\u7528\u6cd5"},"content":{"rendered":"<h1 id=\"mysql%e6%a2%9d%e4%bb%b6%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5%e7%9a%84%e7%94%a8%e6%b3%95-DDfECFyXqu\">MySQL\u689d\u4ef6\u67e5\u8a62\u8a9e\u53e5\u7684\u7528\u6cd5<\/h1>\n<p>MySQL\u662f\u4e00\u7a2e\u6d41\u884c\u7684\u95dc\u806f\u5f0f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u689d\u4ef6\u67e5\u8a62\u8a9e\u53e5\u662fMySQL\u4e2d\u6700\u5e38\u7528\u7684\u529f\u80fd\u4e4b\u4e00\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u6aa2\u7d22\u6578\u64da\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u689d\u4ef6\u67e5\u8a62\u8a9e\u53e5\u7684\u7528\u6cd5\uff0c\u5305\u62ec\u57fa\u672c\u8a9e\u6cd5\u3001\u5e38\u898b\u64cd\u4f5c\u7b26\u53ca\u5be6\u969b\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-DDfECFyXqu\">\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u689d\u4ef6\u67e5\u8a62\u901a\u5e38\u4f7f\u7528SELECT\u8a9e\u53e5\u4f86\u5be6\u73fe\u3002\u57fa\u672c\u7684\u8a9e\u6cd5\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT column1, column2, ...\nFROM table_name\nWHERE condition;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>column1, column2, ...<\/code>\u662f\u8981\u6aa2\u7d22\u7684\u5217\uff0c<code>table_name<\/code>\u662f\u6578\u64da\u8868\u7684\u540d\u7a31\uff0c\u800c<code>condition<\/code>\u5247\u662f\u7528\u4f86\u904e\u6ffe\u6578\u64da\u7684\u689d\u4ef6\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e6%93%8d%e4%bd%9c%e7%ac%a6-DDfECFyXqu\">\u5e38\u898b\u64cd\u4f5c\u7b26<\/h2>\n<p>\u5728\u689d\u4ef6\u67e5\u8a62\u4e2d\uff0c\u5e38\u7528\u7684\u64cd\u4f5c\u7b26\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>=<\/code>\uff1a\u7b49\u65bc<\/li>\n<li><code>!=<\/code>\u6216<code><\/code>\uff1a\u4e0d\u7b49\u65bc<\/li>\n<li><code>&gt;<\/code>\uff1a\u5927\u65bc<\/li>\n<li><code>&lt;<\/code>\uff1a\u5c0f\u65bc<\/li>\n<li><code>&gt;=<\/code>\uff1a\u5927\u65bc\u7b49\u65bc<\/li>\n<li><code>&lt;=<\/code>\uff1a\u5c0f\u65bc\u7b49\u65bc<\/li>\n<li><code>LIKE<\/code>\uff1a\u6a21\u7cca\u67e5\u8a62<\/li>\n<li><code>IN<\/code>\uff1a\u5728\u6307\u5b9a\u7bc4\u570d\u5167<\/li>\n<li><code>BETWEEN<\/code>\uff1a\u5728\u5169\u500b\u503c\u4e4b\u9593<\/li>\n<li><code>AND<\/code>\uff1a\u540c\u6642\u6eff\u8db3\u591a\u500b\u689d\u4ef6<\/li>\n<li><code>OR<\/code>\uff1a\u6eff\u8db3\u4efb\u4e00\u689d\u4ef6<\/li>\n<\/ul>\n<h2 id=\"%e7%af%84%e4%be%8b%e5%88%86%e6%9e%90-DDfECFyXqu\">\u7bc4\u4f8b\u5206\u6790<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u689d\u4ef6\u67e5\u8a62\u7bc4\u4f8b\uff1a<\/p>\n<h3 id=\"1-%e5%9f%ba%e6%9c%ac%e6%9f%a5%e8%a9%a2-DDfECFyXqu\">1. \u57fa\u672c\u67e5\u8a62<\/h3>\n<pre><code>SELECT * FROM employees\nWHERE department = 'Sales';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u6aa2\u7d22\u6240\u6709\u5728\u201cSales\u201d\u90e8\u9580\u5de5\u4f5c\u7684\u54e1\u5de5\u4fe1\u606f\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e4%b8%8d%e7%ad%89%e6%96%bc%e6%93%8d%e4%bd%9c%e7%ac%a6-DDfECFyXqu\">2. \u4f7f\u7528\u4e0d\u7b49\u65bc\u64cd\u4f5c\u7b26<\/h3>\n<pre><code>SELECT * FROM products\nWHERE price != 100;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u6240\u6709\u50f9\u683c\u4e0d\u7b49\u65bc100\u7684\u7522\u54c1\u3002<\/p>\n<h3 id=\"3-%e6%a8%a1%e7%b3%8a%e6%9f%a5%e8%a9%a2-DDfECFyXqu\">3. \u6a21\u7cca\u67e5\u8a62<\/h3>\n<pre><code>SELECT * FROM customers\nWHERE name LIKE 'A%';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u6aa2\u7d22\u6240\u6709\u540d\u5b57\u4ee5\u201cA\u201d\u958b\u982d\u7684\u5ba2\u6236\u3002<\/p>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8in%e6%93%8d%e4%bd%9c%e7%ac%a6-DDfECFyXqu\">4. \u4f7f\u7528IN\u64cd\u4f5c\u7b26<\/h3>\n<pre><code>SELECT * FROM orders\nWHERE status IN ('Shipped', 'Pending');<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u6240\u6709\u72c0\u614b\u70ba\u201cShipped\u201d\u6216\u201cPending\u201d\u7684\u8a02\u55ae\u3002<\/p>\n<h3 id=\"5-%e4%bd%bf%e7%94%a8between%e6%93%8d%e4%bd%9c%e7%ac%a6-DDfECFyXqu\">5. \u4f7f\u7528BETWEEN\u64cd\u4f5c\u7b26<\/h3>\n<pre><code>SELECT * FROM sales\nWHERE sale_date BETWEEN '2023-01-01' AND '2023-12-31';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u6aa2\u7d222023\u5e74\u5167\u7684\u6240\u6709\u92b7\u552e\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-DDfECFyXqu\">\u7d50\u8ad6<\/h2>\n<p>MySQL\u7684\u689d\u4ef6\u67e5\u8a62\u8a9e\u53e5\u662f\u6578\u64da\u6aa2\u7d22\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u6839\u64da\u7279\u5b9a\u9700\u6c42\u9748\u6d3b\u5730\u7372\u53d6\u6578\u64da\u3002\u901a\u904e\u638c\u63e1\u57fa\u672c\u8a9e\u6cd5\u548c\u5e38\u898b\u64cd\u4f5c\u7b26\uff0c\u7528\u6236\u53ef\u4ee5\u9ad8\u6548\u5730\u9032\u884c\u6578\u64da\u67e5\u8a62\uff0c\u5f9e\u800c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u7684\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6709\u66f4\u6df1\u5165\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u9ad8\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u689d\u4ef6\u67e5\u8a62\u8a9e\u53e5\u7684\u7528\u6cd5\uff0c\u638c\u63e1\u5982\u4f55\u4f7f\u7528WHERE\u5b50\u53e5\u9032\u884c\u6578\u64da\u7be9\u9078\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\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-76870","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76870","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=76870"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76870\/revisions"}],"predecessor-version":[{"id":76871,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76870\/revisions\/76871"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76870"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76870"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76870"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}