release: v0.3.2 — 质量加固 + SQL扩展 + 表达式 + 并发同步
v0.2.6 质量加固: - 修复 AriaEngine 二级索引 SSTable 互相覆盖(命名空间隔离) - 修复 LSM 多版本读取顺序错误 + MergeIterator 取最新来源 - 重写 LZ4 压缩器(往返一致性 + 缓冲区溢出) - sstableCache LRU 上限 + 预加载兜底(BufferPool 配置生效) - 修复 React/Vue 集成 import type 运行时 bug + exports 子路径 - 新增 38 个测试(LZ4往返/Crypto/集成), 删除伪测试 v0.3.0 SQL 功能扩展: - 多语句 parseAll + 事务语句 BEGIN/COMMIT/ROLLBACK - INSERT INTO ... SELECT + UNION/UNION ALL + EXISTS 关联子查询 - CREATE/DROP INDEX 五引擎实现 + 别名 WHERE 修复 - benchmark 页面 + 36 个新测试 v0.3.1 表达式与性能: - CASE WHEN 表达式(SELECT 列/WHERE/聚合) - JOIN + 关联子查询逐行绑定 - WAL 批量组提交(写放大 O(N)→O(1)) - 修复 pending frozen 可见性 + flush 缓存竞争 v0.3.2 并发: - CASE WHEN 用于 WHERE/聚合 + JOIN 哈希连接 - 多标签页同步(multiTabSync + BroadcastChannel) - IndexedDB schema 持久化(reopen 后表结构恢复) - 修复 where-matcher 顶层 $not - 修复 CJS 产物 .js 被 ESM 解析(exports 空) — .cjs 后缀 + exports 修正 - 836 测试 / 44 套件 / 81.0% 覆盖率
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thzxx
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@@ -3,7 +3,7 @@
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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 v0.2.5</title>
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<title>🧪 在线演示 — MetonaSqlark v0.3.2</title>
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<link rel="icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'><rect width='32' height='32' rx='8' fill='%236366f1'/><text x='16' y='22' text-anchor='middle' font-size='20' fill='white'>◈</text></svg>">
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<style>
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:root {
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@@ -82,14 +82,15 @@
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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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<a href="benchmark.html">基准</a>
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</nav>
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<div class="status"><span class="dot"></span> Memory 模式 — v0.2.5</div>
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<div class="status"><span class="dot"></span> Memory 模式 — v0.3.2</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 v0.2.5 在线演示
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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 v0.3.2 在线演示
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-- 已预置 users / orders / products 表数据
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-- 新特性: ALTER TABLE · TRUNCATE TABLE · WAL同步 · MVCC · SQL注入防护
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@@ -121,6 +122,12 @@
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<button class="btn btn-preset" onclick="loadPreset('adv')">🧪 高级</button>
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<button class="btn btn-preset" onclick="loadPreset('alter')">🏗 ALTER</button>
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<button class="btn btn-preset" onclick="loadPreset('truncate')">🗑 TRUNCATE</button>
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<button class="btn btn-preset" onclick="loadPreset('casewhen')">🎯 CASE WHEN</button>
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<button class="btn btn-preset" onclick="loadPreset('union')">🔀 UNION</button>
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<button class="btn btn-preset" onclick="loadPreset('insertselect')">📥 INSERT SELECT</button>
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<button class="btn btn-preset" onclick="loadPreset('exists')">🔍 EXISTS</button>
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<button class="btn btn-preset" onclick="loadPreset('index')">🗂 索引</button>
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<button class="btn btn-preset" onclick="loadPreset('multistmt')">📜 多语句/事务</button>
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<button class="btn btn-preset" onclick="loadPreset('aria')" style="color:#ec4899;border-color:#ec4899;">🌲 Aria</button>
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</div>
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</div>
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@@ -511,9 +518,9 @@ SELECT COUNT(*) as total FROM temp_logs;
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-- 清理
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DROP TABLE temp_logs;`,
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aria: `-- 🌲 AriaEngine 演示 (v0.2.5)
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aria: `-- 🌲 AriaEngine 演示 (v0.2.5 → v0.3.2)
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-- AriaEngine: LSM-Tree 自研存储引擎
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-- 支持 LSM-Tree · WAL CRC同步 · MVCC版本链 · BloomFilter · 二级索引 · AES-GCM · 721测试
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-- 支持 LSM-Tree · WAL CRC同步 · MVCC版本链 · BloomFilter · 二级索引 · AES-GCM · 836测试
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-- 基础 CRUD 完全兼容
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CREATE TABLE IF NOT EXISTS tasks (
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@@ -533,18 +540,133 @@ DROP TABLE temp_logs;`,
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-- 聚合统计
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SELECT done, COUNT(*) as cnt FROM tasks GROUP BY done;
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-- CASE WHEN 表达式
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SELECT title,
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CASE WHEN done THEN '✅ done' ELSE '⏳ pending' END AS status
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FROM tasks;
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-- EXISTS 关联子查询
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SELECT u.name FROM users u
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WHERE EXISTS (SELECT 1 FROM orders o WHERE o.user_id = u.id);
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-- AriaEngine 特性:
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-- • LSM-Tree: MemTable (红黑树) → SSTable 多级索引
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-- • WAL: Write-Ahead Log 保证崩溃恢复
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-- • WAL: Write-Ahead Log 保证崩溃恢复 + 批量组提交
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-- • MVCC: 版本链 + 快照隔离
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-- • Buffer Pool: LRU 页面缓存 (256页 ~ 1MB)
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-- • Buffer Pool: SSTable LRU 缓存 (256页 ~ 1MB) ✅ 已生效
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-- • Bloom Filter: FNV-1a + Murmur 双哈希
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-- • Slotted Page: 4KB 页面 + Tuple 二进制编码
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-- • 二级索引: 每列独立 LSM + 动态 CREATE INDEX
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-- 生产环境: mode: 'aria' 激活自研引擎
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-- const db = await MetonaSqlark.create({
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-- name: 'my-app', mode: 'aria'
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-- });`,
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casewhen: `-- 🎯 CASE WHEN 条件表达式 (v0.3.1 / v0.3.2)
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-- SELECT 列：多 WHEN + ELSE
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SELECT name, age,
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CASE WHEN age >= 30 THEN 'senior'
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WHEN age >= 25 THEN 'mid'
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ELSE 'junior' END AS age_group
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FROM users ORDER BY age;
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-- WHERE 条件中的 CASE WHEN
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SELECT name FROM users
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WHERE CASE WHEN age >= 25 THEN 'adult' ELSE 'young' END = 'adult';
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-- 聚合中的 CASE WHEN
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SELECT
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SUM(CASE WHEN age >= 30 THEN 1 ELSE 0 END) AS seniors,
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SUM(CASE WHEN age < 30 THEN 1 ELSE 0 END) AS juniors,
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AVG(CASE WHEN age >= 25 THEN age END) AS avg_adult_age
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FROM users;`,
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union: `-- 🔀 UNION / UNION ALL (v0.3.0)
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-- UNION 去重合并两表数据
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SELECT name FROM users WHERE age >= 30
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UNION
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SELECT name FROM users WHERE age < 30;
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-- UNION 对重复行去重（同查询两次 → 结果去重）
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SELECT category FROM products
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UNION
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SELECT category FROM products;
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-- UNION ALL 保留重复
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SELECT category FROM products WHERE price >= 100
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UNION ALL
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SELECT category FROM products WHERE price >= 50;`,
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insertselect: `-- 📥 INSERT INTO ... SELECT (v0.3.0)
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-- 建备份表并复制全量数据
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DROP TABLE IF EXISTS users_backup;
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CREATE TABLE users_backup (
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id STRING PRIMARY KEY, name STRING, email STRING, age NUMBER
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);
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INSERT INTO users_backup SELECT * FROM users;
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-- 确认复制
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SELECT COUNT(*) as backed_up FROM users_backup;
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-- INSERT SELECT 带 WHERE 过滤
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DROP TABLE IF EXISTS big_spenders;
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CREATE TABLE big_spenders (
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id STRING PRIMARY KEY, product STRING, amount NUMBER
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);
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INSERT INTO big_spenders (id, product, amount)
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SELECT o.id, o.product, o.amount FROM orders o WHERE o.amount >= 150;
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-- 确认过滤结果
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SELECT * FROM big_spenders;`,
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exists: `-- 🔍 EXISTS 关联子查询 (v0.3.0 / v0.3.1)
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-- 有订单的用户（关联子查询）
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SELECT u.name FROM users u
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WHERE EXISTS (SELECT 1 FROM orders o WHERE o.user_id = u.id);
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-- 无订单的用户（NOT EXISTS）
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SELECT u.name FROM users u
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WHERE NOT EXISTS (SELECT 1 FROM orders o WHERE o.user_id = u.id);
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-- EXISTS + JOIN 组合
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SELECT u.name, o.product, o.amount FROM users u
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JOIN orders o ON u.id = o.user_id
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WHERE EXISTS (SELECT 1 FROM orders o2 WHERE o2.user_id = u.id AND o2.amount > 100);`,
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index: `-- 🗂 动态索引 CREATE / DROP INDEX (v0.3.0)
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-- 为 orders.user_id 创建索引
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CREATE INDEX idx_orders_user ON orders (user_id);
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-- 索引查找（走二级索引）
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SELECT u.name, o.product, o.amount
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FROM orders o JOIN users u ON u.id = o.user_id
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WHERE o.user_id = '1';
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-- 删除索引
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DROP INDEX idx_orders_user ON orders (user_id);
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-- 删除后回退全表扫描（结果不变）
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SELECT * FROM orders WHERE user_id = '3';`,
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multistmt: `-- 📜 多语句 + 事务语句 (v0.3.0)
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-- 分号分隔的多语句一次执行
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DROP TABLE IF EXISTS audit;
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CREATE TABLE audit (id STRING PRIMARY KEY, msg STRING);
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INSERT INTO audit VALUES ('a1', 'first');
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INSERT INTO audit VALUES ('a2', 'second');
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SELECT * FROM audit ORDER BY id;
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-- 事务语句：BEGIN → ROLLBACK（a3 不会生效）
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BEGIN;
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INSERT INTO audit VALUES ('a3', 'will be rolled back');
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ROLLBACK;
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SELECT * FROM audit ORDER BY id;
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-- 事务语句：BEGIN → COMMIT（a4 生效）
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BEGIN;
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INSERT INTO audit VALUES ('a4', 'will be committed');
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COMMIT;
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SELECT COUNT(*) as total FROM audit;`,
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};
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function loadPreset(name) {
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@@ -564,7 +686,7 @@ document.addEventListener('keydown', e => {
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// Boot
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initDB().then(() => {
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console.log('✅ MetonaSqlark v0.2.5 demo ready');
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console.log('✅ MetonaSqlark v0.3.2 demo ready');
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setTimeout(runQuery, 300);
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}).catch(err => {
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renderError('初始化失败: ' + err.message);
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