大约有 40,000 项符合查询结果（耗时：0.0467秒） [XML]
Ways to save enums in database
... to decipher:
Name Suit
================== ==========
Shelby Jackson 2
Ian Boyd 1
verses
Name Suit
================== ==========
Shelby Jackson Diamond
Ian Boyd Heart
the latter is much easier. The former required getting at the s...
Get value when selected ng-option changes
...
You will get selected option's value and text from list/array by using filter.
editobj.FlagName=(EmployeeStatus|filter:{Value:editobj.Flag})[0].KeyName
<select name="statusSelect"
id="statusSelect"
class="form-control"
ng-model="editobj.Flag"
ng-options="opt...
Exit single-user mode
...and find all the connections to database 'my_db'.
Kill all the connections by doing KILL { session id } where session id is the SPID listed by sp_who2.
Third, open a new query window.
Execute the following code.
-- Start in master
USE MASTER;
-- Add users
ALTER DATABASE [my_db] SET MULTI_USER
GO...
Is there a way of having git show lines added, lines changed and lines removed?
...
The output of git diff --numstat is broken down by file. To see the total added/removed for the diff, you can pipe it to awk: git diff --numstat | awk '{ added += $1; removed += $2 } END { print "+" added " -" removed }'
– hughes
Dec ...
Why does JPA have a @Transient annotation?
... in Java refers to the process of encoding/decoding an object's state as a byte stream.
The transient keyword is a stronger condition than @Transient:
If a field uses the transient keyword, that field will not be serialized when the object is converted to a byte stream. Furthermore, since JPA tre...
Random “Element is no longer attached to the DOM” StaleElementReferenceException
... Consider the following scenario:
WebElement element = driver.findElement(By.id("foo"));
// DOM changes - page is refreshed, or element is removed and re-added
element.click();
Now at the point where you're clicking the element, the element reference is no longer valid. It's close to impossible f...
Sequence contains no elements?
...her than FirstOrDefault() and SingleOrDefault().
This can also be caused by the following commands:
FirstAsync()
SingleAsync()
Last()
LastAsync()
Max()
Min()
Average()
Aggregate()
share
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impro...
What are database normal forms and can you give examples? [closed]
...lling us that IT101 is programming, and IT102 is Databases. So we fix that by moving the course name into another table, where CourseID is the ENTIRE key.
Primary Key |
CourseID | Course Name |
---------------------------|
IT101 | Programming |
IT102 | Databases |
IT103 |...
SQL Server: Difference between PARTITION BY and GROUP BY
I've been using GROUP BY for all types of aggregate queries over the years. Recently, I've been reverse-engineering some code that uses PARTITION BY to perform aggregations. In reading through all the documentation I can find about PARTITION BY , it sounds a lot like GROUP BY , maybe with a ...
How to draw rounded rectangle in Android UI?
...dark" />
<corners android:radius="32dp" />
</shape>
By changing the android:radius you can change the amount of "radius" of the corners.
<solid> is used to define the color of the drawable.
You can use replace android:radius with android:bottomLeftRadius, android:botto...