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Select n random rows from SQL Server table
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select top 10 percent * from [yourtable] order by newid()
In response to the "pure trash" comment concerning large tables: you could do it like this to improve performance.
select * from [yourtable] where [yourPk] in
(select top 10 percent [yourPk] from [yourtable] order b...
Angularjs minify best practice
... your minifer converts $scope to variable a and $http to variable b, their identity is still preserved in the strings.
See this page of AngularJS docs, scroll down to A Note on Minification.
UPDATE
Alternatively, you can use ng-annotate npm package in your build process to avoid this verbosity.
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How do I print the full value of a long string in gdb?
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As long as your program's in a sane state, you can also call (void)puts(your_string) to print it to stdout. Same principle applies to all functions available to the debugger, actually.
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How do I disable the security certificate check in Python requests
...ecause requests maintains a per-session connection pool and certificate validation happens only once per connection so unexpected things like this will happen:
>>> import requests
>>> session = requests.Session()
>>> session.get('https://wrong.host.badssl.com/', verify=Fa...
安卓防止息屏方案深度调研 - 小米红米MIUI专项解决 - App应用开发 - 清泛IT...
...这个问题
AI深度调研回复：
一、通用方案（标准Android）
方案1：FLAG_KEEP_SCREEN_ON（最推荐）
// Activity中
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
// 或XML布局
android:keepScreenOn="true"
- 优点：不需要WAK...
How to pop an alert message box using PHP?
...ders HTML and Javascript to send to the client's browser. PHP is a server-side language. This is what allows it do things like INSERT something into a database on the server.
But an alert is rendered by the browser of the client. You would have to work through javascript to get an alert.
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Why does my application spend 24% of its life doing a null check?
...d. The next statement is very cheap because the while() statement already did the heavy lifting of retrieving the value from memory. Assigning the local variable is cheap, a processor uses a buffer for writes.
Not otherwise a simple problem to solve, flattening your tree into arrays is very likely ...
Difference between rake db:migrate db:reset and db:schema:load
... database
rake db:schema:load If you wanna reset database to schema as provided in schema.rb (This will delete all data)
Explanations
rake db:schema:load will set up the schema as provided in schema.rb file. This is useful for a fresh install of app as it doesn't take as much time as db:migrate
Im...
Create table (structure) from existing table
...ing from source to destination table. Try yourself:- CREATE TABLE Table1 ( Id int , Name varchar(200) ) INSERT INTO table1 VALUES (1,'A') INSERT INTO table1 VALUES(2,'B') -- Will create table2 with data in table1 SELECT * INTO Table2 FROM Table1 WHERE 1=2 -- Will create table2 without data in table1...
Can you explain the HttpURLConnection connection process?
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The first 3 answers to your questions are listed as inline comments, beside each method, in the example HTTP POST above.
From getOutputStream:
Returns an output stream that writes to this connection.
Basically, I think you have a good understanding of how this works, so let me just reiter...