{"id":2311,"date":"2025-03-04T08:32:06","date_gmt":"2025-03-04T00:32:06","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2311"},"modified":"2025-03-04T08:32:06","modified_gmt":"2025-03-04T00:32:06","slug":"sqlite-%e5%88%9b%e5%bb%ba%e8%a1%a8%ef%bc%88create-table%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/04\/sqlite-%e5%88%9b%e5%bb%ba%e8%a1%a8%ef%bc%88create-table%ef%bc%89\/","title":{"rendered":"SQLite \u521b\u5efa\u8868\uff08CREATE TABLE\uff09"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5728 SQLite \u4e2d\uff0c\u4f7f\u7528 <code>CREATE TABLE<\/code> \u8bed\u53e5\u521b\u5efa\u6570\u636e\u5e93\u8868\u3002\u8868\u662f\u5b58\u50a8\u6570\u636e\u7684\u57fa\u672c\u7ed3\u6784\uff0c\u6bcf\u4e2a\u8868\u7531<strong>\u5217\uff08\u5b57\u6bb5\uff09<\/strong>\u7ec4\u6210\uff0c\u6bcf\u5217\u6709\u7279\u5b9a\u7684\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1. \u8bed\u6cd5<\/strong><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE table_name (\n    column1 datatype constraints,\n    column2 datatype constraints,\n    ...\n);<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>table_name<\/code>\uff1a\u8868\u540d\u3002<\/li>\n\n\n\n<li><code>column1, column2, ...<\/code>\uff1a\u5217\u7684\u540d\u79f0\u3002<\/li>\n\n\n\n<li><code>datatype<\/code>\uff1a\u5217\u7684\u6570\u636e\u7c7b\u578b\uff08\u5982 <code>INTEGER<\/code>, <code>TEXT<\/code>, <code>REAL<\/code>, <code>BLOB<\/code>\uff09\u3002<\/li>\n\n\n\n<li><code>constraints<\/code>\uff1a\u5217\u7684\u7ea6\u675f\u6761\u4ef6\uff08\u5982 <code>PRIMARY KEY<\/code>, <code>NOT NULL<\/code>, <code>UNIQUE<\/code>, <code>DEFAULT<\/code>\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2. \u521b\u5efa\u7b80\u5355\u8868<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u793a\u4f8b\uff1a\u521b\u5efa\u7528\u6237\u8868<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE users (\n    id INTEGER PRIMARY KEY AUTOINCREMENT,\n    name TEXT NOT NULL,\n    age INTEGER,\n    email TEXT UNIQUE\n);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u89e3\u91ca\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>id INTEGER PRIMARY KEY AUTOINCREMENT<\/code>\uff1a\u81ea\u52a8\u9012\u589e\u7684\u4e3b\u952e\u3002<\/li>\n\n\n\n<li><code>name TEXT NOT NULL<\/code>\uff1a\u4e0d\u80fd\u4e3a\u7a7a\u7684\u6587\u672c\u5b57\u6bb5\u3002<\/li>\n\n\n\n<li><code>age INTEGER<\/code>\uff1a\u6574\u6570\u7c7b\u578b\u5b57\u6bb5\u3002<\/li>\n\n\n\n<li><code>email TEXT UNIQUE<\/code>\uff1a\u552f\u4e00\u7684\u7535\u5b50\u90ae\u4ef6\u5b57\u6bb5\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3. \u521b\u5efa\u5e26\u5916\u952e\u7684\u8868<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SQLite <strong>\u652f\u6301\u5916\u952e<\/strong>\uff0c\u4f46\u5fc5\u987b\u542f\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>PRAGMA foreign_keys = ON;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u793a\u4f8b\uff1a\u521b\u5efa\u8ba2\u5355\u8868\uff08\u5f15\u7528 <code>users<\/code> \u8868\uff09<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE orders (\n    order_id INTEGER PRIMARY KEY AUTOINCREMENT,\n    user_id INTEGER NOT NULL,\n    amount REAL NOT NULL,\n    order_date TEXT DEFAULT CURRENT_TIMESTAMP,\n    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE\n);<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>user_id<\/code> \u4f5c\u4e3a\u5916\u952e\uff0c\u5173\u8054 <code>users<\/code> \u8868\u7684 <code>id<\/code>\u3002<\/li>\n\n\n\n<li><code>ON DELETE CASCADE<\/code>\uff1a\u5982\u679c <code>users<\/code> \u8868\u4e2d\u7684\u67d0\u4e2a\u7528\u6237\u88ab\u5220\u9664\uff0c\u5176\u8ba2\u5355\u4e5f\u4f1a\u88ab\u81ea\u52a8\u5220\u9664\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4. \u68c0\u67e5\u8868\u662f\u5426\u5df2\u5b58\u5728<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SQLite <strong>\u4e0d\u5141\u8bb8\u521b\u5efa\u540c\u540d\u8868<\/strong>\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>IF NOT EXISTS<\/code> \u907f\u514d\u9519\u8bef\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE IF NOT EXISTS users (\n    id INTEGER PRIMARY KEY AUTOINCREMENT,\n    name TEXT NOT NULL\n);<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>5. \u67e5\u770b\u6570\u636e\u5e93\u4e2d\u7684\u8868<\/strong><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>.tables<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6216\u8005\u67e5\u770b <code>sqlite_master<\/code>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT name FROM sqlite_master WHERE type='table';<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>6. \u5220\u9664\u8868<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u8981\u5220\u9664\u8868\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DROP TABLE IF EXISTS users;<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>7. \u5728 Python \u4e2d\u521b\u5efa\u8868<\/strong><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>import sqlite3\n\n# \u8fde\u63a5\u6570\u636e\u5e93\nconn = sqlite3.connect('my_database.db')\ncursor = conn.cursor()\n\n# \u521b\u5efa\u8868\ncursor.execute('''\n    CREATE TABLE IF NOT EXISTS users (\n        id INTEGER PRIMARY KEY AUTOINCREMENT,\n        name TEXT NOT NULL,\n        age INTEGER,\n        email TEXT UNIQUE\n    );\n''')\n\n# \u63d0\u4ea4\u66f4\u6539\nconn.commit()\n\n# \u5173\u95ed\u8fde\u63a5\nconn.close()<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u603b\u7ed3<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 <code>CREATE TABLE<\/code> \u521b\u5efa\u8868\u3002<\/li>\n\n\n\n<li><code>PRIMARY KEY AUTOINCREMENT<\/code> \u751f\u6210\u552f\u4e00 ID\u3002<\/li>\n\n\n\n<li><code>FOREIGN KEY<\/code> \u521b\u5efa\u8868\u95f4\u5173\u8054\uff0c\u9700 <code>PRAGMA foreign_keys = ON;<\/code>\u3002<\/li>\n\n\n\n<li><code>IF NOT EXISTS<\/code> \u907f\u514d\u91cd\u590d\u521b\u5efa\u8868\u3002<\/li>\n\n\n\n<li>\u53ef\u4ee5\u7528 <code>sqlite_master<\/code> \u67e5\u8be2\u5df2\u6709\u8868\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 SQLite \u4e2d\uff0c\u4f7f\u7528 CREATE TABLE \u8bed\u53e5\u521b\u5efa\u6570\u636e\u5e93\u8868\u3002\u8868\u662f\u5b58\u50a8\u6570\u636e\u7684\u57fa\u672c\u7ed3\u6784\uff0c\u6bcf\u4e2a\u8868\u7531\u5217\uff08\u5b57 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76],"tags":[],"class_list":["post-2311","post","type-post","status-publish","format-standard","hentry","category-sqlite"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2311","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=2311"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2311\/revisions"}],"predecessor-version":[{"id":2312,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2311\/revisions\/2312"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2311"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2311"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}