Question

我正在准备一个session.execute语句，如下所示。我有几个条件和一个IN条款。我收到以下错误。我知道我犯了一个错误但却无法使它发挥作用 filter_site_value = ['filter 1', 'filter 2']

session = get_session()
query = 'SELECT * FROM table where cv = %s AND dt > %s and dt < %s AND st IN  (%s)' % ','.join('%s' for i in filter_site_value)
data = (filter_customer_value,filter_date_start_value, filter_date_end_value, filter_site_value)
rows = session.execute(query, data)

＆＃34; errorType＆＃34;：＆＃34; TypeError＆＃34;，＆＃34; errorMessage＆＃34;：＆＃34;没有足够的格式字符串参数＆＃34;

请帮忙。

Answer 1

您的字符串有3个位置需要将值格式化（%s），您只提供一个值：','.join('%s' for i in filter_site_value)

所以如果你有：

x = string_to_format % values

和string_to_format包含X量%s（或%d %r ...），那么您需要values中的X值

请参阅： https://docs.python.org/2/library/string.html，https://pyformat.info/

您可能想要做的是：

query = 'SELECT * FROM table where cv = %s AND dt > %s and dt < %s AND st IN  ('+ ','.join(filter_site_value)+')'
data = (filter_customer_value,filter_date_start_value, filter_date_end_value)

或

query = 'SELECT * FROM table where cv = %s AND dt > %s and dt < %s AND st IN  ('+ ','.join(%s for i in filter_site_value)+')'
data = (filter_customer_value,filter_date_start_value, filter_date_end_value)+tuple(filter_site_value)

如何为＆＃34; IN子句＆＃34;传递变量参数;

1 个答案: