{"id":180414,"date":"2024-11-09T10:04:21","date_gmt":"2024-11-09T02:04:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/180414\/"},"modified":"2024-11-09T10:04:22","modified_gmt":"2024-11-09T02:04:22","slug":"%e6%b7%b1%e5%ba%a6%e8%a7%a3%e6%9e%90%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e6%94%af%e6%8c%81%e5%93%aa%e4%ba%9b%e6%95%b4%e5%9e%8b%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/180414\/","title":{"rendered":"\u6df1\u5ea6\u89e3\u6790\uff1a\u6578\u64da\u5eab\u652f\u6301\u54ea\u4e9b\u6574\u578b\u6578\u64da\u985e\u578b\uff1f (\u6578\u64da\u5eab\u6709\u54ea\u4e9b\u6574\u578b)"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%ba%a6%e8%a7%a3%e6%9e%90%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e6%94%af%e6%8c%81%e5%93%aa%e4%ba%9b%e6%95%b4%e5%9e%8b%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%ef%bc%9f-EIBqMMEHxd\">\u6df1\u5ea6\u89e3\u6790\uff1a\u6578\u64da\u5eab\u652f\u6301\u54ea\u4e9b\u6574\u578b\u6578\u64da\u985e\u578b\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u6574\u578b\u6578\u64da\u985e\u578b\u662f\u6700\u57fa\u672c\u4e14\u6700\u5e38\u7528\u7684\u6578\u64da\u985e\u578b\u4e4b\u4e00\u3002\u6574\u578b\u6578\u64da\u985e\u578b\u4e3b\u8981\u7528\u65bc\u5b58\u5132\u6574\u6578\u503c\uff0c\u9019\u4e9b\u503c\u53ef\u4ee5\u662f\u6b63\u6578\u3001\u8ca0\u6578\u6216\u96f6\u3002\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u5c0d\u6574\u578b\u6578\u64da\u985e\u578b\u7684\u652f\u6301\u548c\u5be6\u73fe\u53ef\u80fd\u6703\u6709\u6240\u4e0d\u540c\uff0c\u4f46\u5927\u591a\u6578\u4e3b\u6d41\u6578\u64da\u5eab\u7cfb\u7d71\u90fd\u63d0\u4f9b\u4e86\u5e7e\u7a2e\u5e38\u898b\u7684\u6574\u578b\u6578\u64da\u985e\u578b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u4e9b\u6574\u578b\u6578\u64da\u985e\u578b\u53ca\u5176\u7279\u9ede\u3002<\/p>\n<h2 id=\"1-%e6%95%b4%e5%9e%8b%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%a6%82%e8%bf%b0-EIBqMMEHxd\">1. \u6574\u578b\u6578\u64da\u985e\u578b\u6982\u8ff0<\/h2>\n<p>\u6574\u578b\u6578\u64da\u985e\u578b\u901a\u5e38\u5206\u70ba\u4ee5\u4e0b\u5e7e\u985e\uff1a<\/p>\n<ul>\n<li><strong id=\"tinyint-EIBqMMEHxd\">TINYINT<\/strong><\/li>\n<li><strong id=\"smallint-EIBqMMEHxd\">SMALLINT<\/strong><\/li>\n<li><strong id=\"mediumint-EIBqMMEHxd\">MEDIUMINT<\/strong><\/li>\n<li><strong id=\"int-EIBqMMEHxd\">INT<\/strong><\/li>\n<li><strong id=\"bigint-EIBqMMEHxd\">BIGINT<\/strong><\/li>\n<\/ul>\n<h2 id=\"2-%e5%90%84%e9%a1%9e%e6%95%b4%e5%9e%8b%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e8%a9%b3%e8%a7%a3-EIBqMMEHxd\">2. \u5404\u985e\u6574\u578b\u6578\u64da\u985e\u578b\u8a73\u89e3<\/h2>\n<h3 id=\"tinyint-EIBqMMEHxd\">TINYINT<\/h3>\n<p>TINYINT \u662f\u6700\u5c0f\u7684\u6574\u578b\u6578\u64da\u985e\u578b\uff0c\u901a\u5e38\u4f54\u7528 1 \u500b\u5b57\u7bc0\u3002\u5b83\u7684\u53d6\u503c\u7bc4\u570d\u70ba -128 \u5230 127\uff08\u6709\u7b26\u865f\uff09\u6216 0 \u5230 255\uff08\u7121\u7b26\u865f\uff09\u3002\u9019\u4f7f\u5f97 TINYINT \u975e\u5e38\u9069\u5408\u7528\u65bc\u5b58\u5132\u5c0f\u7bc4\u570d\u7684\u6574\u6578\uff0c\u4f8b\u5982\u7528\u65bc\u8868\u793a\u7528\u6236\u7684\u6027\u5225\uff080 \u4ee3\u8868\u7537\u6027\uff0c1 \u4ee3\u8868\u5973\u6027\uff09\u3002<\/p>\n<pre><code>CREATE TABLE users (\n    id TINYINT UNSIGNED NOT NULL,\n    gender TINYINT NOT NULL\n);<\/code><\/pre>\n<h3 id=\"smallint-EIBqMMEHxd\">SMALLINT<\/h3>\n<p>SMALLINT \u4f54\u7528 2 \u500b\u5b57\u7bc0\uff0c\u53d6\u503c\u7bc4\u570d\u70ba -32,768 \u5230 32,767\uff08\u6709\u7b26\u865f\uff09\u6216 0 \u5230 65,535\uff08\u7121\u7b26\u865f\uff09\u3002\u9019\u4f7f\u5f97 SMALLINT \u9069\u5408\u7528\u65bc\u5b58\u5132\u4e2d\u7b49\u7bc4\u570d\u7684\u6574\u6578\uff0c\u4f8b\u5982\u5e74\u9f61\u6216\u5c0f\u578b\u8a08\u6578\u5668\u3002<\/p>\n<pre><code>CREATE TABLE products (\n    id SMALLINT UNSIGNED NOT NULL,\n    stock SMALLINT NOT NULL\n);<\/code><\/pre>\n<h3 id=\"mediumint-EIBqMMEHxd\">MEDIUMINT<\/h3>\n<p>MEDIUMINT \u4f54\u7528 3 \u500b\u5b57\u7bc0\uff0c\u53d6\u503c\u7bc4\u570d\u70ba -8,388,608 \u5230 8,388,607\uff08\u6709\u7b26\u865f\uff09\u6216 0 \u5230 16,777,215\uff08\u7121\u7b26\u865f\uff09\u3002\u9019\u985e\u578b\u9069\u5408\u7528\u65bc\u9700\u8981\u66f4\u5927\u7bc4\u570d\u7684\u6574\u6578\uff0c\u4f8b\u5982\u7528\u65bc\u5b58\u5132\u7528\u6236\u7684\u8a2a\u554f\u6b21\u6578\u3002<\/p>\n<pre><code>CREATE TABLE page_views (\n    id MEDIUMINT UNSIGNED NOT NULL,\n    views MEDIUMINT NOT NULL\n);<\/code><\/pre>\n<h3 id=\"int-EIBqMMEHxd\">INT<\/h3>\n<p>INT \u662f\u6700\u5e38\u7528\u7684\u6574\u578b\u6578\u64da\u985e\u578b\uff0c\u4f54\u7528 4 \u500b\u5b57\u7bc0\uff0c\u53d6\u503c\u7bc4\u570d\u70ba -2,147,483,648 \u5230 2,147,483,647\uff08\u6709\u7b26\u865f\uff09\u6216 0 \u5230 4,294,967,295\uff08\u7121\u7b26\u865f\uff09\u3002\u9019\u4f7f\u5f97 INT \u9069\u5408\u7528\u65bc\u5927\u591a\u6578\u9700\u8981\u5b58\u5132\u6574\u6578\u7684\u60c5\u6cc1\uff0c\u4f8b\u5982\u7528\u6236 ID \u6216\u8a02\u55ae\u7de8\u865f\u3002<\/p>\n<pre><code>CREATE TABLE orders (\n    id INT UNSIGNED NOT NULL,\n    user_id INT NOT NULL\n);<\/code><\/pre>\n<h3 id=\"bigint-EIBqMMEHxd\">BIGINT<\/h3>\n<p>BIGINT \u662f\u6700\u5927\u7684\u6574\u578b\u6578\u64da\u985e\u578b\uff0c\u4f54\u7528 8 \u500b\u5b57\u7bc0\uff0c\u53d6\u503c\u7bc4\u570d\u70ba -9,223,372,036,854,775,808 \u5230 9,223,372,036,854,775,807\uff08\u6709\u7b26\u865f\uff09\u6216 0 \u5230 18,446,744,073,709,551,615\uff08\u7121\u7b26\u865f\uff09\u3002\u9019\u985e\u578b\u9069\u5408\u7528\u65bc\u9700\u8981\u5b58\u5132\u975e\u5e38\u5927\u7684\u6574\u6578\u7684\u60c5\u6cc1\uff0c\u4f8b\u5982\u5168\u7403\u7528\u6236\u6578\u91cf\u6216\u5927\u578b\u6578\u64da\u96c6\u7684\u8a08\u6578\u3002<\/p>\n<pre><code>CREATE TABLE transactions (\n    id BIGINT UNSIGNED NOT NULL,\n    amount BIGINT NOT NULL\n);<\/code><\/pre>\n<h2 id=\"3-%e6%95%b4%e5%9e%8b%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e9%81%b8%e6%93%87-EIBqMMEHxd\">3. \u6574\u578b\u6578\u64da\u985e\u578b\u7684\u9078\u64c7<\/h2>\n<p>\u5728\u9078\u64c7\u6574\u578b\u6578\u64da\u985e\u578b\u6642\uff0c\u958b\u767c\u8005\u61c9\u6839\u64da\u5be6\u969b\u9700\u6c42\u4f86\u9078\u64c7\u5408\u9069\u7684\u985e\u578b\u3002\u9078\u64c7\u904e\u5c0f\u7684\u6574\u578b\u985e\u578b\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u6ea2\u51fa\uff0c\u800c\u9078\u64c7\u904e\u5927\u7684\u985e\u578b\u5247\u6703\u6d6a\u8cbb\u5b58\u5132\u7a7a\u9593\u3002\u4e00\u822c\u4f86\u8aaa\uff0c\u4f7f\u7528 INT \u985e\u578b\u662f\u6700\u5b89\u5168\u7684\u9078\u64c7\uff0c\u4f46\u5728\u67d0\u4e9b\u7279\u5b9a\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528 TINYINT \u6216 SMALLINT \u53ef\u80fd\u6703\u66f4\u6709\u6548\u7387\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-EIBqMMEHxd\">\u7e3d\u7d50<\/h2>\n<p>\u6574\u578b\u6578\u64da\u985e\u578b\u5728\u6578\u64da\u5eab\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u7684\u89d2\u8272\uff0c\u6b63\u78ba\u7684\u9078\u64c7\u548c\u4f7f\u7528\u9019\u4e9b\u985e\u578b\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u6548\u7387\u3002\u4e86\u89e3\u5404\u7a2e\u6574\u578b\u6578\u64da\u985e\u578b\u7684\u7279\u9ede\u53ca\u5176\u9069\u7528\u5834\u666f\uff0c\u5c0d\u65bc\u6578\u64da\u5eab\u8a2d\u8a08\u8005\u548c\u958b\u767c\u8005\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u548c\u6578\u64da\u5b58\u5132\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u8a0e\u6578\u64da\u5eab\u4e2d\u652f\u6301\u7684\u6574\u578b\u6578\u64da\u985e\u578b\uff0c\u5305\u62ec\u5404\u985e\u578b\u7684\u7279\u9ede\u53ca\u9069\u7528\u5834\u666f\uff0c\u5e6b\u52a9\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\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-180414","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180414","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=180414"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180414\/revisions"}],"predecessor-version":[{"id":180415,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180414\/revisions\/180415"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=180414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=180414"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=180414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}