sqlite的蟒蛇插入到表錯誤

Question

具有這兩種功能 在想，如果人能告訴我，我錯了 這是一個單獨的函數作爲蜘蛛的一部分，通過房價的網站搜索的麻煩

def save_house_to_db(id, address, postcode, bedrooms): 
    conn = sqlite3.connect('houses_in_london.db') 
    d = conn.cursor() 
    d.execute('INSERT INTO TABLE houses (id, address, postcode, bedrooms) VALUES (%d %s %s %d)' %(id, str(address), str(postcode), float(bedrooms))) 
    d.commit() 
    d.close() 

def save_transactions_to_db(id, sale_price, date): 
    conn = sqlite3.connect('houses_in_london.db') 
    d = conn.cursor() 
    d.execute('INSERT INTO TABLE transactions (transaction_id NOT NULL AUTO_INCREMENT, house_id, date, sale_price) VALUES' 
       '(%d %s %s)' %(id, sale_price, str(date))) 
    d.commit() 
    d.close() 

這裏是引發的錯誤：

Traceback (most recent call last): 
    File "/Users/saminahbab/Documents/House_Prices/final_spider.py", line 186, in <module> 
    final_function(link_set=areas,id_counter=40) 
    File "/Users/s/Documents/House_Prices/final_spider.py", line 158, in final_function 
    page_stripper(link=(root+page), id_counter=id_counter) 
    File "/Users/s/Documents/House_Prices/final_spider.py", line 79, in page_stripper 
    save_house_to_db(id=float(id_counter), address=address, postcode=postcode, bedrooms=bedrooms) 
    File "/Users/s/Documents/House_Prices/final_spider.py", line 25, in save_house_to_db 
    d.execute('INSERT INTO TABLE houses VALUES (%d %s %s %d)' %(id, str(address), str(postcode), float(bedrooms))) 
sqlite3.OperationalError: near "TABLE": syntax error 

和參考這裏是執行的DATABSE

# conn = sqlite3.connect('houses_in_london.db') 
# database = conn.cursor() 
# database.execute('CREATE TABLE houses (id INTEGER PRIMARY KEY, address TEXT,' 
#     'postcode TEXT, bedrooms TEXT)') 
# 
# database.execute('CREATE TABLE transactions (transaction_id NOT NULL AUTO_INCREMENT, house_id INTEGER ' 
#     ' REFERENCES houses(id), date TEXT, sale_price INTEGER)') 

一如既往，感謝大家的支持

Answer 1

你有很多問題：

• INSERT-clause沒有TABLE關鍵字
• 你試圖使用字符串格式化將變量傳遞給一個SQL查詢;不這樣做，永遠 - 使用佔位符，或face the consequences
• 你的價值觀子句缺少值表達式
• 的sqlite3 module用途之間用逗號「？」作爲一個佔位符代替％的格式化
• 「TRANSACTION_ID NOT NULL AUTO_INCREMENT」不是一個有效的列名
• 「AUTO_INCREMENT」 is not valid SQLite syntax，你很可能意味着TRANSACTION_ID是INTEGER PRIMARY KEY - 也AUTOINCREMENT should usually not be used

以下功能修復一些錯誤，將DDL更正限制在transactions表中。

def save_house_to_db(id, address, postcode, bedrooms): 
    conn = sqlite3.connect('houses_in_london.db') 
    d = conn.cursor() 
    # Remove the TABLE "keyword" 
    d.execute('INSERT INTO houses (id, address, postcode, bedrooms) ' 
       'VALUES (?, ?, ?, ?)', (id, address, postcode, bedrooms)) 
    d.commit() 
    d.close() 

def save_transactions_to_db(id, sale_price, date): 
    conn = sqlite3.connect('houses_in_london.db') 
    d = conn.cursor() 
    # This here expects that you've fixed the table definition as well 
    d.execute('INSERT INTO transactions (house_id, date, sale_price) ' 
       'VALUES (?, ?, ?)', (id, sale_price, date)) 
    d.commit() 
    d.close()