📝 update example

README-EN.md

@@ -228,13 +228,14 @@ $ python fuzzy.py /test_fuzzy foo bar
 
 ## Examples
 
-| Name          | File                                     |
-|---------------|------------------------------------------|
-| Calculate     | [calculate.py](./example/calculate.py)   |
-| Execute       | [exec_code.py](./example/exec_code.py)   |
-| Request Route | [endpoint.py](./example/endpoint.py)     |
-| Image Search  | [img_search.py](./example/img_search.py) |
-| PIP           | [pip.py](./example/pip.py)               |
+| Name           | File                                     |
+|----------------|------------------------------------------|
+| Calculate      | [calculate.py](./example/calculate.py)   |
+| Execute        | [exec_code.py](./example/exec_code.py)   |
+| Request Route  | [endpoint.py](./example/endpoint.py)     |
+| Image Search   | [img_search.py](./example/img_search.py) |
+| PIP            | [pip.py](./example/pip.py)               |
+| Database Query | [exec_sql.py](./example/exec_sql.py)     |
 
 ## License
 

README.md

@@ -223,13 +223,14 @@ $ python fuzzy.py /test_fuzzy foo bar
 
 ## 示例
 
-| 名称   | 文件                                       |
-|------|------------------------------------------|
-| 计算   | [calculate.py](./example/calculate.py)   |
-| 执行代码 | [exec_code.py](./example/exec_code.py)   |
-| 请求路由 | [endpoint.py](./example/endpoint.py)     |
-| 图片搜索 | [img_search.py](./example/img_search.py) |
-| PIP  | [pip.py](./example/pip.py)               |
+| 名称    | 文件                                       |
+|-------|------------------------------------------|
+| 计算    | [calculate.py](./example/calculate.py)   |
+| 执行代码  | [exec_code.py](./example/exec_code.py)   |
+| 请求路由  | [endpoint.py](./example/endpoint.py)     |
+| 图片搜索  | [img_search.py](./example/img_search.py) |
+| PIP   | [pip.py](./example/pip.py)               |
+| 数据库查询 | [exec_sql.py](./example/exec_sql.py)     |
 
 
 ## 许可

example/exec_sql.py

@@ -0,0 +1,29 @@
+from sqlite3 import connect
+from typing import Optional
+from arclet.alconna import Alconna, Arg, Option, KeyWordVar, MultiVar
+
+db = connect('example.db')
+
+cursor = db.cursor()
+
+
+select = Alconna(
+    "SELECT",
+    Arg("columns", MultiVar(str)),
+    Option("FROM", Arg("table", str, field="UNKNOWN")),
+    Option("WHERE", Arg("conditions", MultiVar(KeyWordVar(str)))),
+)
+
+
+@select.bind()
+def exec_sql(columns: tuple[str, ...], table: str, conditions: Optional[dict[str, str]] = None):
+    if table == "UNKNOWN":
+        print("Table name is required.")
+        return
+    if conditions is None:
+        conditions = {}
+    cursor.execute(f"SELECT {', '.join(columns)} FROM {table} WHERE {' AND '.join(f'{k}={v}' for k, v in conditions.items())}")
+    print(cursor.fetchall())
+
+
+select.parse("SELECT health name FROM entertainment.pets WHERE USERID=MYID()")