从Python列表

Question

在MYSQL删除多行与信息如果列表LL：

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

是在一个MySQL表，测试中列ID与其它ID的。

我可以使用下面的ID为在LL删除所有行：

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"; """) 

我怎么能做到这一点编程？

Answer 1

您可以使用单个查询做到这一点：在做替换时

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

由于cursor.execute逃脱字符串，这个例子是针对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] 

，然后运行列表中的每个SQL语句的。

Answer 3

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

那样？