494 lines
18 KiB
HTML
494 lines
18 KiB
HTML
<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>在线演示 — MetonaSqlark v0.1.14</title>
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<style>
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:root {
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--bg:#0a0a0f; --surface:#0d1117; --surface2:#161b22; --border:#30363d;
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--primary:#6366f1; --accent:#06b6d4; --accent2:#ec4899; --green:#22c55e;
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--text:#e2e8f0; --text2:#8b949e; --radius:12px;
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--gradient:linear-gradient(135deg,#6366f1,#06b6d4,#ec4899);
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}
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* { margin:0; padding:0; box-sizing:border-box; }
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body { font-family:'Inter',-apple-system,system-ui,sans-serif; background:var(--bg); color:var(--text); height:100vh; overflow:hidden; }
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header {
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height:56px; display:flex; align-items:center; justify-content:space-between; padding:0 24px;
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background:var(--surface); border-bottom:1px solid var(--border); z-index:10; position:relative;
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}
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.logo { font-weight:800; font-size:1.1rem; display:flex; align-items:center; gap:10px; }
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.logo .icon { width:28px; height:28px; border-radius:7px; background:var(--gradient); display:flex; align-items:center; justify-content:center; font-size:0.85rem; font-weight:900; color:#fff; }
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.logo span { background:var(--gradient); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
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nav { display:flex; gap:20px; }
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nav a { color:var(--text2); text-decoration:none; font-size:0.88rem; transition:.2s; }
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nav a:hover,.nav-active { color:var(--text); }
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.status { display:flex; align-items:center; gap:8px; font-size:0.82rem; color:var(--text2); }
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.status .dot { width:7px; height:7px; border-radius:50%; background:var(--green); animation:pulse 2s infinite; }
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@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }
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.main { display:flex; height:calc(100vh - 56px); }
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.editor-panel { flex:1; display:flex; flex-direction:column; border-right:1px solid var(--border); min-width:400px; }
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.result-panel { flex:1; display:flex; flex-direction:column; min-width:400px; }
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.panel-header {
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padding:12px 20px; font-size:0.78rem; font-weight:600; text-transform:uppercase;
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letter-spacing:1px; color:var(--text2); border-bottom:1px solid var(--border);
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display:flex; align-items:center; justify-content:space-between;
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}
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.panel-header .badge {
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font-size:0.7rem; padding:3px 10px; border-radius:999px; background:var(--surface2);
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border:1px solid var(--border); text-transform:none; letter-spacing:0;
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}
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.editor-area { flex:1; display:flex; flex-direction:column; }
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#sql-input {
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flex:1; background:var(--surface); color:var(--text); border:none; padding:20px;
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font-family:'JetBrains Mono','Fira Code',monospace; font-size:0.9rem; line-height:1.8;
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resize:none; outline:none; caret-color:var(--primary);
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}
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#sql-input::placeholder { color:var(--text2); opacity:0.5; }
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.toolbar { display:flex; gap:8px; padding:12px 20px; border-top:1px solid var(--border); background:var(--surface2); flex-wrap:wrap; }
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.btn {
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display:inline-flex; align-items:center; gap:6px; padding:10px 20px; border-radius:8px;
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font-weight:600; font-size:0.85rem; cursor:pointer; border:none; transition:.25s; font-family:inherit;
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}
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.btn-run { background:var(--gradient); color:#fff; box-shadow:0 4px 15px rgba(99,102,241,0.35); }
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.btn-run:hover { transform:translateY(-1px); box-shadow:0 6px 25px rgba(99,102,241,0.5); }
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.btn-run:active { transform:scale(0.97); }
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.btn-clear { background:var(--surface2); color:var(--text2); border:1px solid var(--border); }
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.btn-clear:hover { color:var(--text); border-color:var(--text2); }
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.btn-preset { background:transparent; color:var(--accent); border:1px solid var(--accent); font-size:0.78rem; padding:6px 14px; }
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.btn-preset:hover { background:rgba(6,182,212,0.12); }
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.result-content { flex:1; overflow-y:auto; padding:20px; }
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.result-table { width:100%; border-collapse:collapse; font-size:0.85rem; }
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.result-table th { text-align:left; padding:10px 14px; background:var(--surface2); color:var(--accent); font-weight:600; border-bottom:2px solid var(--border); position:sticky; top:0; z-index:1; }
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.result-table td { padding:8px 14px; border-bottom:1px solid var(--border); color:var(--text2); max-width:250px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
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.result-table tr:hover td { background:rgba(99,102,241,0.04); }
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.empty-state { display:flex; flex-direction:column; align-items:center; justify-content:center; height:100%; color:var(--text2); gap:12px; }
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.empty-state .icon { font-size:3rem; opacity:0.3; }
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.error-box { background:rgba(239,68,68,0.1); border:1px solid rgba(239,68,68,0.3); border-radius:10px; padding:16px; color:#f87171; font-family:'JetBrains Mono',monospace; font-size:0.82rem; margin-bottom:16px; }
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.success-box { background:rgba(34,197,94,0.1); border:1px solid rgba(34,197,94,0.3); border-radius:10px; padding:12px 16px; color:#4ade80; font-size:0.85rem; margin-bottom:16px; }
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.sql-tag { display:inline-block; background:var(--surface2); border:1px solid var(--border); border-radius:6px; padding:4px 12px; font-family:'JetBrains Mono',monospace; font-size:0.75rem; color:var(--accent); margin-bottom:8px; }
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::-webkit-scrollbar { width:6px; height:6px; }
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::-webkit-scrollbar-track { background:transparent; }
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::-webkit-scrollbar-thumb { background:var(--border); border-radius:3px; }
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@media(max-width:900px){ .main { flex-direction:column; } .editor-panel,.result-panel { min-width:auto; } .editor-panel { height:50%; } }
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</style>
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</head>
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<body>
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<header>
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<div class="logo"><div class="icon">◈</div><span>MetonaSqlark</span></div>
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<nav>
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<a href="index.html">首页</a>
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<a href="docs.html">文档</a>
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<a href="demo.html" class="nav-active">演示</a>
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</nav>
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<div class="status"><span class="dot"></span> Memory 模式 — v0.1.14</div>
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</header>
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<div class="main">
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<div class="editor-panel">
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<div class="editor-area">
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<textarea id="sql-input" placeholder="输入 SQL 语句... SELECT * FROM users; INSERT INTO users VALUES ('4', 'Diana', 'diana@test.com', 28); SELECT u.name, o.amount FROM users u INNER JOIN orders o ON u.id = o.user_id;">-- 🚀 MetonaSqlark v0.1.14 在线演示
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-- 已预置 users / orders / products 表数据
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-- 查看所有数据
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SELECT * FROM users;
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-- 条件查询 + 排序
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SELECT name, age FROM users WHERE age > 25 ORDER BY age DESC;
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-- JOIN 多表关联
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SELECT u.name, o.product, o.amount
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FROM users u INNER JOIN orders o ON u.id = o.user_id;
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-- 聚合统计
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SELECT COUNT(*) as total_users, AVG(age) as avg_age FROM users;</textarea>
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<div class="toolbar">
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<button class="btn btn-run" onclick="runQuery()">▶ 执行 (Ctrl+Enter)</button>
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<button class="btn btn-clear" onclick="clearResults()">🗑 清空</button>
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<span style="flex:1"></span>
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<button class="btn btn-preset" onclick="loadPreset('all')">📋 全数据</button>
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<button class="btn btn-preset" onclick="loadPreset('join')">🔗 JOIN</button>
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<button class="btn btn-preset" onclick="loadPreset('agg')">📊 聚合</button>
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<button class="btn btn-preset" onclick="loadPreset('ddl')">🏗 DDL</button>
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<button class="btn btn-preset" onclick="loadPreset('crud')">✏️ CRUD</button>
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<button class="btn btn-preset" onclick="loadPreset('subquery')">🔍 子查询</button>
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<button class="btn btn-preset" onclick="loadPreset('tx')">🔒 事务</button>
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<button class="btn btn-preset" onclick="loadPreset('scalar')">🎯 标量子查询</button>
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<button class="btn btn-preset" onclick="loadPreset('cascade')">🔗 级联</button>
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<button class="btn btn-preset" onclick="loadPreset('adv')">🧪 高级</button>
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</div>
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</div>
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</div>
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<div class="result-panel">
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<div class="panel-header">
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<span>📊 查询结果</span>
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<span class="badge" id="row-count">0 行</span>
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</div>
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<div class="result-content" id="result-area">
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<div class="empty-state">
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<div class="icon">⚡</div>
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<div>执行 SQL 查询以查看结果</div>
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<div style="font-size:0.8rem;opacity:0.6">Ctrl + Enter 快捷执行 · 支持多语句</div>
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</div>
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</div>
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</div>
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</div>
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<script src="../dist/metona-sqlark.js"></script>
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<script>
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// Resolve global: try both MetonaSqlark and MeSqlark
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const globalNs = window.MetonaSqlark || window.MeSqlark || {};
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const { MetonaSqlark, MeSqlark, create } = globalNs;
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const DBClass = MetonaSqlark || MeSqlark;
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let db = null;
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const resultArea = document.getElementById('result-area');
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const rowCount = document.getElementById('row-count');
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const sqlInput = document.getElementById('sql-input');
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// Init database
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async function initDB() {
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try {
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db = new DBClass({ name: 'demo', mode: 'memory' });
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await db.init();
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// Create tables
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await db.defineTable('users', {
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id: { type: 'string', primaryKey: true },
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name: { type: 'string', required: true },
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email: { type: 'string' },
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age: { type: 'number', default: 0 },
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});
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await db.defineTable('orders', {
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id: { type: 'string', primaryKey: true },
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user_id: { type: 'string' },
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product: { type: 'string' },
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amount: { type: 'number' },
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quantity: { type: 'number', default: 1 },
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});
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await db.defineTable('products', {
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id: { type: 'string', primaryKey: true },
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name: { type: 'string', required: true },
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price: { type: 'number', default: 0 },
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category: { type: 'string' },
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});
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// Seed data
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await db.table('users').insertMany([
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{ id: '1', name: 'Alice', email: 'alice@demo.com', age: 30 },
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{ id: '2', name: 'Bob', email: 'bob@demo.com', age: 25 },
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{ id: '3', name: 'Charlie', email: 'charlie@demo.com', age: 35 },
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{ id: '4', name: 'Diana', email: 'diana@demo.com', age: 28 },
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{ id: '5', name: 'Eve', email: 'eve@demo.com', age: 22 },
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]);
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await db.table('orders').insertMany([
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{ id: 'o1', user_id: '1', product: 'Laptop', amount: 1200, quantity: 1 },
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{ id: 'o2', user_id: '1', product: 'Mouse', amount: 50, quantity: 2 },
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{ id: 'o3', user_id: '2', product: 'Keyboard', amount: 150, quantity: 1 },
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{ id: 'o4', user_id: '3', product: 'Monitor', amount: 400, quantity: 1 },
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{ id: 'o5', user_id: '3', product: 'Cable', amount: 20, quantity: 3 },
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]);
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await db.table('products').insertMany([
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{ id: 'p1', name: 'Laptop', price: 1200, category: 'Electronics' },
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{ id: 'p2', name: 'Mouse', price: 50, category: 'Accessories' },
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{ id: 'p3', name: 'Keyboard', price: 150, category: 'Accessories' },
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]);
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} catch (e) {
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renderError('数据库初始化失败: ' + e.message);
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}
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}
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// Run SQL
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async function runQuery() {
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const sql = sqlInput.value.trim();
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if (!sql || !db) return;
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const statements = sql.split(';').map(s => s.trim()).filter(s => s.length > 0);
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try {
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const allResults = [];
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for (const stmt of statements) {
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const result = await db.query(stmt);
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allResults.push({ sql: stmt, result });
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}
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if (allResults.length === 1) {
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renderResult(allResults[0]);
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} else {
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renderAllResults(allResults);
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}
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} catch (e) {
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renderError(e.message || String(e));
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}
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}
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function renderResult({ sql, result }) {
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if (Array.isArray(result)) {
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renderTable(result);
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} else {
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renderSuccess(`✅ 执行成功 (影响 ${result ?? 0} 行)`);
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}
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}
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function renderAllResults(allResults) {
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let html = '';
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for (const { sql, result } of allResults) {
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html += `<div class="sql-tag">> ${escapeHTML(sql)}</div>`;
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if (Array.isArray(result)) {
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if (result.length === 0) {
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html += '<div class="success-box">✅ 查询返回 0 行</div>';
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} else {
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html += buildTableHTML(result);
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}
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} else {
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html += `<div class="success-box">✅ 执行成功 (影响 ${result ?? 0} 行)</div>`;
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}
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html += '<div style="height:12px"></div>';
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}
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resultArea.innerHTML = html;
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updateRowCount(allResults.reduce((sum, r) => sum + (Array.isArray(r.result) ? r.result.length : 0), 0));
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}
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function renderTable(rows) {
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if (!rows || rows.length === 0) {
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resultArea.innerHTML = '<div class="success-box">✅ 查询返回 0 行</div>';
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updateRowCount(0);
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return;
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}
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resultArea.innerHTML = buildTableHTML(rows);
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updateRowCount(rows.length);
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}
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function buildTableHTML(rows) {
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const columns = Object.keys(rows[0]);
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let html = '<table class="result-table"><thead><tr>';
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for (const col of columns) {
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html += `<th>${escapeHTML(col)}</th>`;
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}
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html += '</tr></thead><tbody>';
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for (const row of rows) {
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html += '<tr>';
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for (const col of columns) {
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const val = row[col];
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html += `<td>${formatCell(val)}</td>`;
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}
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html += '</tr>';
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}
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html += '</tbody></table>';
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return html;
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}
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function formatCell(val) {
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if (val === null) return '<span style="color:#64748b;font-style:italic">NULL</span>';
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if (val === undefined) return '<span style="color:#64748b">-</span>';
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if (typeof val === 'boolean') return `<span style="color:#fbbf24">${val}</span>`;
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if (typeof val === 'number') return `<span style="color:#fbbf24">${val}</span>`;
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return escapeHTML(String(val));
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}
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function renderError(msg) {
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resultArea.innerHTML = `<div class="error-box">❌ ${escapeHTML(msg)}</div>`;
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updateRowCount(0);
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}
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function renderSuccess(msg) {
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resultArea.innerHTML = `<div class="success-box">${msg}</div>`;
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}
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function clearResults() {
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resultArea.innerHTML = `<div class="empty-state"><div class="icon">⚡</div><div>结果已清空</div></div>`;
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updateRowCount(0);
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}
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function updateRowCount(n) { rowCount.textContent = `${n} 行`; }
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function escapeHTML(str) { return String(str).replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>').replace(/"/g,'"').replace(/'/g,'''); }
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// Presets
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const presets = {
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all: `-- 查看所有数据
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SELECT * FROM users;
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SELECT * FROM orders;
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SELECT * FROM products;`,
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join: `-- INNER JOIN：用户 + 订单
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SELECT u.name, o.product, o.amount, o.quantity
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FROM users u
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INNER JOIN orders o ON u.id = o.user_id
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ORDER BY o.amount DESC;
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-- LEFT JOIN：包含没有订单的用户
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SELECT u.name, o.product, o.amount
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FROM users u
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LEFT JOIN orders o ON u.id = o.user_id;`,
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agg: `-- 聚合统计：每个用户的消费
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SELECT u.name, COUNT(*) as orders, SUM(o.amount) as total_spent
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FROM users u
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INNER JOIN orders o ON u.id = o.user_id
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GROUP BY u.name
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ORDER BY total_spent DESC;
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-- 全局聚合
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SELECT COUNT(*) as total_users, AVG(age) as avg_age,
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MIN(age) as min_age, MAX(age) as max_age
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FROM users;
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-- 分类统计
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SELECT category, COUNT(*) as product_count, AVG(price) as avg_price
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FROM products
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GROUP BY category;`,
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ddl: `-- 查看所有表
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-- (使用 db.getTableNames() 替代)
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-- 创建新表
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CREATE TABLE tasks (
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id STRING PRIMARY KEY,
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title STRING NOT NULL,
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done BOOLEAN DEFAULT false,
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priority NUMBER DEFAULT 0
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);
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-- 插入数据
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INSERT INTO tasks (id, title, done, priority) VALUES ('t1', 'Learn SQLark', false, 1);
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INSERT INTO tasks VALUES ('t2', 'Write docs', true, 2);
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-- 查询
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SELECT * FROM tasks ORDER BY priority DESC;
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-- 删除表
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DROP TABLE tasks;`,
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crud: `-- 增
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INSERT INTO users VALUES ('9', 'Frank', 'frank@demo.com', 40);
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-- 查
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SELECT * FROM users WHERE name = 'Frank';
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-- 改
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UPDATE users SET age = 41, email = 'frank2@demo.com' WHERE id = '9';
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-- 查（确认）
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SELECT * FROM users WHERE id = '9';
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-- 删
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DELETE FROM users WHERE id = '9';
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-- 确认
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SELECT COUNT(*) as user_count FROM users;`,
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subquery: `-- IN 子查询：有订单的用户
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SELECT name, email FROM users
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WHERE id IN (SELECT user_id FROM orders);
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-- NOT IN 子查询：没有订单的用户
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SELECT name, email FROM users
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WHERE id NOT IN (SELECT user_id FROM orders);
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-- 标量子查询：消费最高的用户
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SELECT name, age FROM users
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WHERE id IN (
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SELECT user_id FROM orders
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WHERE amount = (SELECT MAX(amount) FROM orders)
|
|
);`,
|
|
tx: `-- 事务：插入用户及其订单（全部成功才提交）
|
|
-- 使用 db.transaction() API（这里有演示限制）
|
|
|
|
-- 模拟事务场景：先查余额，再插入订单
|
|
SELECT * FROM users WHERE id = '1';
|
|
|
|
INSERT INTO orders VALUES ('o99', '1', 'Headphones', 199, 1);
|
|
|
|
SELECT u.name, COUNT(*) as order_count, SUM(o.amount) as total
|
|
FROM users u INNER JOIN orders o ON u.id = o.user_id
|
|
WHERE u.id = '1'
|
|
GROUP BY u.name;
|
|
|
|
-- 回滚演示：记得用 db.transaction() 包裹哦`,
|
|
scalar: `-- 聚合无 GROUP BY → 单行结果
|
|
SELECT COUNT(*) as total_users, AVG(age) as avg_age FROM users;
|
|
|
|
-- 年龄大于平均值的用户（标量子查询）
|
|
SELECT name, age FROM users
|
|
WHERE age > (SELECT AVG(age) FROM users);
|
|
|
|
-- 消费超过平均值的用户
|
|
SELECT u.name, SUM(o.amount) as spent
|
|
FROM users u INNER JOIN orders o ON u.id = o.user_id
|
|
GROUP BY u.name
|
|
HAVING SUM(o.amount) > (SELECT AVG(amount) FROM orders);`,
|
|
cascade: `-- 外键级联：先创建带外键的表
|
|
DROP TABLE IF EXISTS orders;
|
|
|
|
CREATE TABLE orders (
|
|
id STRING PRIMARY KEY,
|
|
user_id STRING REFERENCES users(id) ON DELETE CASCADE,
|
|
product STRING,
|
|
amount NUMBER,
|
|
quantity NUMBER DEFAULT 1
|
|
);
|
|
|
|
-- 重新插入测试数据
|
|
INSERT INTO orders VALUES ('o1', '1', 'Laptop', 1200, 1);
|
|
INSERT INTO orders VALUES ('o2', '1', 'Mouse', 50, 2);
|
|
INSERT INTO orders VALUES ('o3', '2', 'Keyboard', 150, 1);
|
|
|
|
-- 查看用户和订单
|
|
SELECT u.name, o.product, o.amount
|
|
FROM users u INNER JOIN orders o ON u.id = o.user_id;
|
|
|
|
-- 删除用户1 → 其订单自动级联删除
|
|
DELETE FROM users WHERE id = '1';
|
|
|
|
-- 确认：只剩用户2的订单
|
|
SELECT u.name, o.product, o.amount
|
|
FROM users u LEFT JOIN orders o ON u.id = o.user_id;`,
|
|
adv: `-- 复杂 WHERE：年龄在20-30之间且名字不是Bob
|
|
SELECT * FROM users
|
|
WHERE age BETWEEN 20 AND 30 AND name != 'Bob'
|
|
ORDER BY age DESC;
|
|
|
|
-- DISTINCT 去重
|
|
SELECT DISTINCT age FROM users ORDER BY age;
|
|
|
|
-- 多表 JOIN + 过滤 + 排序 + 分页
|
|
SELECT u.name, o.product, o.amount
|
|
FROM users u
|
|
INNER JOIN orders o ON u.id = o.user_id
|
|
WHERE o.amount >= 50
|
|
ORDER BY o.amount DESC
|
|
LIMIT 5 OFFSET 0;
|
|
|
|
-- 子查询 + 聚合混合
|
|
SELECT u.name, (
|
|
SELECT COUNT(*) FROM orders o WHERE o.user_id = u.id
|
|
) as order_count
|
|
FROM users u
|
|
WHERE u.age >= 25;`
|
|
};
|
|
|
|
function loadPreset(name) {
|
|
if (presets[name]) {
|
|
sqlInput.value = presets[name];
|
|
runQuery();
|
|
}
|
|
}
|
|
|
|
// Keyboard shortcut
|
|
document.addEventListener('keydown', e => {
|
|
if ((e.ctrlKey || e.metaKey) && e.key === 'Enter') {
|
|
e.preventDefault();
|
|
runQuery();
|
|
}
|
|
});
|
|
|
|
// Boot
|
|
initDB().then(() => {
|
|
console.log('✅ MetonaSqlark v0.1.14 demo ready');
|
|
setTimeout(runQuery, 300);
|
|
}).catch(err => {
|
|
renderError('初始化失败: ' + err.message);
|
|
});
|
|
</script>
|
|
</body>
|
|
</html>
|