66 lines
2.9 KiB
Python
66 lines
2.9 KiB
Python
# test_usage.py - 测试SQLite通用模块的使用
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from sqliteModule.sqlite_db import g_dbInst # 导入封装好的全局实例
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'''
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def test_all_operations():
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# 1. 创建数据表（带IF NOT EXISTS，重复执行不报错）
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create_sql = """
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CREATE TABLE IF NOT EXISTS user (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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username TEXT NOT NULL UNIQUE,
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age INTEGER DEFAULT 0,
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create_time TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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)
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"""
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db.create_table(create_sql)
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# 2. 单条插入数据（参数化，防注入）
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insert_sql = 'INSERT INTO user (username, age) VALUES (?, ?)'
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db.execute_sql(insert_sql, ("zhangsan", 20))
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db.execute_sql(insert_sql, ("lisi", 25))
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# 3. 批量插入数据（效率更高，适合大量数据）
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batch_params = [("wangwu", 18), ("zhaoliu", 30), ("sunqi", 22)]
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db.batch_execute(insert_sql, batch_params)
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# 4. 更新数据（按条件更新，避免全表修改）
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update_sql = "UPDATE user SET age = ? WHERE username = ?"
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db.execute_sql(update_sql, (26, "lisi"))
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# 5. 删除数据（按条件删除）
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delete_sql = "DELETE FROM user WHERE username = ?"
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db.execute_sql(delete_sql, ("zhaoliu",))
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# 6. 查询单条数据（支持按列名取值，因设置了row_factory）
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one_user = db.fetch_one("SELECT * FROM user WHERE username = ?", ("zhangsan",))
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if one_user:
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print("【单条查询】ID：{}，用户名：{}，年龄：{}".format(
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one_user["id"], one_user["username"], one_user["age"]
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# 也可按索引：one_user[0], one_user[1], one_user[2]
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))
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# 7. 查询所有数据（遍历结果）
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all_users = db.fetch_all("SELECT * FROM user ORDER BY id")
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print("\n【所有数据查询】共{}条记录：".format(len(all_users)))
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for user in all_users:
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print(f"ID：{user['id']}，用户名：{user['username']}，年龄：{user['age']}")
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# 8. 查询单个值（如统计总记录数、最大年龄）
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total = db.fetch_scalar("SELECT COUNT(*) FROM user")
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max_age = db.fetch_scalar("SELECT MAX(age) FROM user")
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print(f"\n【单个值查询】总记录数：{total}，最大年龄：{max_age}")
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# 9. 条件查询（带参数）
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young_users = db.fetch_all("SELECT * FROM user WHERE age < ?", (25,))
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print("\n【条件查询】年龄小于25的用户：")
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for user in young_users:
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print(f"用户名：{user['username']}，年龄：{user['age']}")
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'''
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if __name__ == "__main__":
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# 6. 查询单条数据（支持按列名取值，因设置了row_factory）
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one_user = g_dbInst.fetch_one("SELECT * FROM t_user WHERE f_user_id = ?", ("adm_001",))
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if one_user:
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print("【单条查询】ID：{}，用户type：{}，date：{}".format(
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one_user[0], one_user[1], one_user[3]
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# 也可按索引：one_user[0], one_user[1], one_user[3]
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)) |