85 lines
2.4 KiB
Python
85 lines
2.4 KiB
Python
# -*- coding: utf-8 -*-
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"""
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检查数据库表的实际结构
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"""
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import sqlite3
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import logging
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# 配置日志
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handlers = [logging.FileHandler('table_structure.log'), logging.StreamHandler()]
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logging.basicConfig(
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level=logging.INFO,
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format='%(asctime)s - %(levelname)s - %(message)s',
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handlers=handlers
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)
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logger = logging.getLogger(__name__)
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# 数据库文件路径
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db_path = 'car_info.db'
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def check_table_structure(table_name):
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"""
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检查指定表的结构
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"""
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logger.info(f"开始检查表 {table_name} 的结构")
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try:
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conn = sqlite3.connect(db_path)
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cursor = conn.cursor()
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# 检查表是否存在
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cursor.execute("SELECT name FROM sqlite_master WHERE type='table' AND name=?", (table_name,))
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table_exists = cursor.fetchone() is not None
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if not table_exists:
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logger.error(f"表 {table_name} 不存在")
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return
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# 获取表的字段信息
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cursor.execute(f"PRAGMA table_info({table_name})")
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columns = cursor.fetchall()
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logger.info(f"表 {table_name} 的字段信息:")
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for column in columns:
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logger.info(f"字段ID: {column[0]}, 字段名: {column[1]}, 数据类型: {column[2]}, 非空约束: {column[3]}, 默认值: {column[4]}, 主键: {column[5]}")
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# 获取表中的记录数量
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cursor.execute(f"SELECT COUNT(*) FROM {table_name}")
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count = cursor.fetchone()[0]
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logger.info(f"表 {table_name} 中的记录数量: {count}")
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# 如果有记录，显示前5条记录的内容
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if count > 0:
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cursor.execute(f"SELECT * FROM {table_name} LIMIT 5")
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rows = cursor.fetchall()
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logger.info(f"表 {table_name} 的前5条记录:")
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for row in rows:
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logger.info(f"记录: {row}")
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# 关闭数据库连接
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conn.close()
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except sqlite3.Error as e:
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logger.error(f"数据库操作失败: {str(e)}")
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except Exception as e:
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logger.error(f"程序执行出错: {str(e)}")
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def main():
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"""
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主函数
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"""
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logger.info("开始检查数据库表结构")
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# 检查query_history表的结构
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check_table_structure('query_history')
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# 检查car_owners表的结构
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check_table_structure('car_owners')
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logger.info("数据库表结构检查完成")
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if __name__ == "__main__":
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main() |