103 lines
3.3 KiB
Python
103 lines
3.3 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import sqlite3
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import sys
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import os
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def print_separator(char='-', length=80):
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"""打印分隔线"""
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print(char * length)
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def show_database_info(db_path):
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"""显示数据库信息"""
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if not os.path.exists(db_path):
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print(f"错误：数据库文件 '{db_path}' 不存在")
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return
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try:
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# 连接到数据库
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conn = sqlite3.connect(db_path)
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cursor = conn.cursor()
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# 获取所有表名
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cursor.execute("SELECT name FROM sqlite_master WHERE type='table';")
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tables = cursor.fetchall()
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if not tables:
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print("数据库中没有表")
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conn.close()
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return
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print(f"在数据库 '{db_path}' 中找到 {len(tables)} 个表:")
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print_separator()
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# 显示每个表的结构和数据
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for table in tables:
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table_name = table[0]
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print(f"\n表名: {table_name}")
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print_separator()
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# 获取表结构
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cursor.execute(f"PRAGMA table_info({table_name});")
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columns = cursor.fetchall()
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# 打印列名
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col_names = [col[1] for col in columns]
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col_types = [col[2] for col in columns]
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print("表结构:")
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for i, (name, type_) in enumerate(zip(col_names, col_types)):
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print(f" {i+1}. {name} ({type_})")
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# 获取记录数
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cursor.execute(f"SELECT COUNT(*) FROM {table_name};")
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count = cursor.fetchone()[0]
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print(f"\n记录数: {count}")
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# 获取表数据 (最多显示10条)
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if count > 0:
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cursor.execute(f"SELECT * FROM {table_name} LIMIT 10;")
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rows = cursor.fetchall()
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print("\n数据预览 (最多10条):")
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print_separator()
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# 打印列名
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for col in col_names:
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print(f"{col:15}", end="")
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print("\n" + "-" * (15 * len(col_names)))
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# 打印数据
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for row in rows:
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for item in row:
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# 对值进行截断，防止过长的数据破坏格式
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item_str = str(item)
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if len(item_str) > 13:
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item_str = item_str[:10] + "..."
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print(f"{item_str:15}", end="")
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print()
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if count > 10:
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print(f"...（还有 {count-10} 条记录）")
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print_separator("=")
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conn.close()
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print("\n查询完成！")
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except sqlite3.Error as e:
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print(f"SQLite 错误: {e}")
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except Exception as e:
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print(f"发生错误: {e}")
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def show_usage():
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"""显示使用帮助"""
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print(f"使用方法: python {os.path.basename(__file__)} <数据库文件路径>")
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print("示例: python db_viewer.py C:\\path\\to\\your\\database.db")
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if __name__ == "__main__":
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if len(sys.argv) != 2:
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show_usage()
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else:
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db_path = sys.argv[1]
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show_database_info(db_path) |