從Python列表

Question

在MYSQL刪除多行與信息如果列表LL：

LL = ['foo', bar', 'noo', 'boo',]

是在一個MySQL表，測試中列ID與其它ID的。

我可以使用下面的ID爲在LL刪除所有行：

csr.execute("""DELETE FROM test.test WHERE ID = "Foo"; """) 
    csr.execute("""DELETE FROM test.test WHERE ID = "bar"; """) 
    csr.execute("""DELETE FROM test.test WHERE ID = "noo"; """) 
    csr.execute("""DELETE FROM test.test WHERE ID = "boo"; """) 

我怎麼能做到這一點編程？

Answer 1

您可以使用單個查詢做到這一點：在做替換時

id_list = ['abc', 'def', 'ghi'] 
query_string = "delete from test where id in (%s)" % ','.join(['?'] * len(id_list)) 
cursor.execute(query_string, id_list) 

由於cursor.execute逃脫字符串，這個例子是針對SQL注入安全。

Answer 2

字符串格式化 - http://docs.python.org/library/string.html#format-string-syntax

["""DELETE FROM test.test WHERE ID = "%s"; """ % x for x in LL] 

，然後運行列表中的每個SQL語句的。

Answer 3

for item in LL: 
    csr.execute("DELETE FROM test.test WHERE ID = '%s'", item) 

那樣？