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Does a UNIQUE constraint automatically create an INDEX on the field(s)?
...unique keys are in fact B-tree type indexes.
A composite index on (email, user_id) is enough, you don't need a separate index on email only - MySQL can use leftmost parts of a composite index. There may be some border cases where the size of an index can slow down your queries, but you should not w...
无法打包成apk - App应用开发 - 清泛IT社区，为创新赋能！
本帖最后由 wlf2201 于 2025-03-02 11:20 编辑
打包apk时候，出现服务器故障，无法保存文件，请稍候重试
程序写的比较大，几乎没有图片，500k稍微多点，新建立一个只有几个元件的小项目，可以顺利打包，怀疑时程序过大导致...
How are POST and GET variables handled in Python?
...); POST[k]=v
You can now access the fields as following:
print GET.get('user_id')
print POST.get('user_name')
I must also point out that the CGI module doesn't work well. Consider this HTTP request:
POST / test.py?user_id=6
user_name=Bob&age=30
Using CGI.FieldStorage().getvalue('user_id...
Encoding Javascript Object to Json string
... { };
new_tweets.k = { };
new_tweets.k.tweet_id = 98745521;
new_tweets.k.user_id = 54875;
new_tweets.k.data = { };
new_tweets.k.data.in_reply_to_screen_name = 'other_user';
new_tweets.k.data.text = 'tweet text';
// Will create the JSON string you're looking for.
var json = JSON.stringify(new_tw...
Array vs. Object efficiency in JavaScript
...o get the object of the user, a loop is needed to get user object based on user_id" vs "object having keys as user_id hence user object could be accessed using user_id as key" ? Which one is better in terms of the performance ? Any suggestions on this are appreciated :)
– Rayon...
Creating email templates with Django
...Mail(BaseSimpleMail):
email_key = 'welcome'
def set_context(self, user_id, welcome_link):
user = User.objects.get(id=user_id)
return {
'user': user,
'welcome_link': welcome_link
}
simple_mailer.register(WelcomeMail)
And send it this way :
...
Unknown column in 'field list' error on MySQL Update query
...ofile
SET
master_user_profile.fellow = 'y'
WHERE
master_user_profile.user_id IN (
SELECT tran_user_branch.user_id
FROM tran_user_branch WHERE tran_user_branch.branch_id = 17);
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...
LEFT OUTER joins in Rails 3
...
@posts = Post.joins("LEFT OUTER JOIN users ON users.id = posts.user_id").
joins(:blog).select
share
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RESTful password reset
...rther to comment below)
I would go for something like this:
POST /users/:user_id/reset_password
You have a collection of users, where the single user is specified by the {user_name}. You would then specify the action to operate on, which in this case is reset_password. It is like saying "Create ...
What is the recommended way to delete a large number of items from DynamoDB?
...
What I ideally want to do is call LogTable.DeleteItem(user_id) -
Without supplying the range, and have it delete everything for me.
An understandable request indeed; I can imagine advanced operations like these might get added over time by the AWS team (they have a history o...