大约有 16,000 项符合查询结果（耗时：0.0300秒） [XML]
How to get last inserted id?
...verConnection); // initialize the query environment
SqlDataReader myReader = mySqlCommand.ExecuteReader(); // last inserted ID is recieved as any resultset on the first column of the first row
int LastInsertedId = 0; // this value will be changed if insertion suceede
...
What are database normal forms and can you give examples? [closed]
...include the example in the answer itself. A casual user should be able to read your answer and get some value from it without having to click the blog link. The answer should be self-contained, in other words.
– Robert Harvey
Oct 22 '12 at 23:03
...
AngularJS HTTP post to PHP and undefined
...e to just use the default angularjs setting of application/json as header, read the raw input in PHP, and then deserialize the JSON.
That can be achieved in PHP like this:
$postdata = file_get_contents("php://input");
$request = json_decode($postdata);
$email = $request->email;
$pass = $request...
What is the use of the %n format specifier in C?
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@jamesdlin: My mistake. I'm sorry.. I didn't know where I read that.
– Jack
Jun 20 '14 at 18:22
1
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Does Foreign Key improve query performance?
... performance
Foreign key constraint improve performance at the time of reading
data but at the same time it slows down the performance at the time of
inserting / modifying / deleting data.
In case of reading the query, the optimizer can use foreign key constraints to
create more effi...
How do I use IValidatableObject?
......I'm not registered so I can't vote him up, please do so if anybody else reads this.
Here's how to accomplish what I was trying to do.
Validatable class:
public class ValidateMe : IValidatableObject
{
[Required]
public bool Enable { get; set; }
[Range(1, 5)]
public int Prop1 { ...
Selecting data from two different servers in SQL Server
...s the enterprise.
The ability to address diverse data sources similarly.
Read more about Linked Servers.
Follow these steps to create a Linked Server:
Server Objects -> Linked Servers -> New Linked Server
Provide Remote Server Name.
Select Remote Server Type (SQL Server or Other).
Select ...
Conversion failed when converting date and/or time from character string while inserting datetime
...
Please read the other answers already provided. This format works for you only because of your session DATEFORMAT setting. Verify this by running SET DATEFORMAT MDY;SELECT CAST('2017-08-07 00:00:00' AS datetime); SET DATEFORMAT DMY...
Git commit with no commit message
...ine of the commit message is used all over the place within git; for more, read "A Note About Git Commit Messages".
If you open Terminal.app, cd to your project directory, and git commit -am '', you will see that it fails because an empty commit message is not allowed. Newer versions of git have th...
Number of days between two dates in Joda-Time
... answer builds two LocalDate objects, which are quite expensive if you are reading lot of data.
I use this:
public static int getDaysBetween(DateTime earlier, DateTime later)
{
return (int) TimeUnit.MILLISECONDS.toDays(later.getMillis()- earlier.getMillis());
}
By calling getMillis() yo...