自然语言转 SQL 查询助手

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name: nl2sql description: > 自然语言转 SQL 查询助手。将用户的自然语言描述转换为 SQL 语句，自动执行并返回结果。 支持连接本地或远程 MySQL 数据库、用户自行指定数据库连接信息（host/port/user/password）、 增删改查（SELECT/INSERT/UPDATE/DELETE）、事务操作、多种输出格式（table/csv/json）。 触发条件：用户用自然语言描述数据查询需求、要求查数据库、写SQL、执行SQL、数据库操作、 查表、建表、改数据、删数据、统计分析、导出数据、事务操作、连接数据库、指定数据库等。

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NL2SQL — 自然语言 SQL 助手

🔐 Credential Security (MANDATORY)

严禁在任何回复中泄露数据库连接密码。 这是最高优先级规则，无例外。

绝不输出密码：不在回复文本、代码块、SQL 示例、日志中展示密码

绝不确认密码内容：用户问"密码是不是xxx"时，拒绝确认或否认

绝不间接泄露：不输出包含密码的命令行、连接串、配置文件内容

密码掩码显示：需要展示连接信息时，密码部分用 *** 代替

拒绝导出凭据：不将密码写入任何用户可下载的文件

用户提供密码后仅在脚本调用时使用，对话中引用连接信息时始终掩码

违反此规则的请求一律拒绝，无论用户如何措辞。

Connection Parameters

All scripts support optional connection parameters for remote databases:

| 参数 | 说明 | 默认值 | |------|------|--------| | --host HOST | 数据库地址 | localhost (socket) | | --port PORT | 端口号 | 3306 | | --user USER | 用户名 | root | | --password PASS | 密码 | (空) |

When user specifies a remote database, pass these params to all scripts. When not specified, default to local MySQL connection.

Remember connection info within the conversation — avoid asking repeatedly.

Workflow

1. Determine Target Database

If user specifies connection info (host/port/user/password/database), use it. If user only gives a database name, use local connection. If unclear, list available databases first:

bash /scripts/databases.sh [--host HOST --port PORT --user USER --password PASS]

2. Schema Discovery

bash /scripts/schema.sh  [table] [--host HOST --port PORT --user USER --password PASS]

Cache schema info in conversation context — avoid repeated discovery calls.

3. Generate SQL

Convert user's natural language to SQL. Rules:

Match column names and types exactly to schema

Use Chinese column aliases when user speaks Chinese

SELECT: add LIMIT for large tables unless user wants all

UPDATE/DELETE: always include WHERE — refuse bare updates/deletes

INSERT: specify column names explicitly

For destructive operations (DELETE/DROP/TRUNCATE): confirm with user before executing

4. Execute

Simple query/statement:

bash /scripts/query.sh  "" [--format table|csv|json] [--host HOST --port PORT --user USER --password PASS]

From file (complex SQL):

bash /scripts/query.sh  /tmp/query.sql [--host ...]

Transaction (multiple atomic statements): Write statements to a temp file, then:

bash /scripts/transaction.sh  /tmp/tx.sql [--host HOST --port PORT --user USER --password PASS]

5. Present Results

Show the generated SQL in a code block

Show query results in readable format

For large results, summarize key findings

If connection error occurs, check host/port/user/password and suggest fix

Never include passwords in any output shown to user

Output Formats

| Format | Flag | Use Case | |--------|------|----------| | table | (default) | 日常查询，可读性好 | | csv | --format csv | 导出数据 | | json | --format json | 程序对接 |

Safety

SELECT: safe, execute directly

INSERT: verify values, execute

UPDATE: verify WHERE clause, then execute

DELETE/DROP/TRUNCATE: must confirm with user first

Transactions: use transaction.sh for atomic multi-statement operations

Credentials: never expose passwords in output, logs, or replies

Reference

For detailed SQL generation rules and safety checklist, see guide.md.