大约有 45,000 项符合查询结果(耗时:0.0408秒) [XML]
Entity Framework: table without primary key
...mn as a primary key, use NULLIF.
An easy way to apply this is to wrap the select statement of your view in another select.
Example:
SELECT
ISNULL(MyPrimaryID,-999) MyPrimaryID,
NULLIF(AnotherProperty,'') AnotherProperty
FROM ( ... ) AS temp
answered Apr 26 '10 at 17:00 by Tillito
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How do I run Visual Studio as an administrator by default?
...indows 8, 8.1 and 10
In Windows 8, you have to right-click devenv.exe and select "Troubleshoot compatibility".
Select "Troubleshoot program"
Check "The program requires additional permissions"
click "Next", click "Test the program..."
Wait for the program to launch
Click "Next"
Select "Yes, save ...
Removing duplicate rows from table in Oracle
...
Use the rowid pseudocolumn.
DELETE FROM your_table
WHERE rowid not in
(SELECT MIN(rowid)
FROM your_table
GROUP BY column1, column2, column3);
Where column1, column2, and column3 make up the identifying key for each record. You might list all your columns.
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How to use base class's constructors and assignment operator in C++?
...No operator=() defined
};
class Derived : public ImplicitBase {
const char* name_;
public:
Derived& operator=(const Derived& d)
{
ImplicitBase::operator=(d); // Call compiler generated operator=
name_ = strdup(d.name_);
return *this;
}
};
...
Case insensitive Query with Spring CrudRepository
With Spring CrudRepository Query; I want to select "DeviceType" entities with it's "name" property. But following query select the entitles on case sensitive manner. How I make it case insensitive way. Thanks.
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select count(*) from table of mysql in php
...s keyword in order to call it from mysql_fetch_assoc
$result=mysql_query("SELECT count(*) as total from Students");
$data=mysql_fetch_assoc($result);
echo $data['total'];
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How to change Android Studio's editor font?
...TRL + mouse wheel which is really easy to use it !!!
To use this feature select File -> Settings -> Editor -> General -> select the checkbox of Change the font size (Zoom) with Ctrl + Mouse Wheel
I hope it's helpful.
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How do you detect Credit card type based on number?
...: before processing a cardholder PAN, strip any whitespace and punctuation characters from the input. Why? Because it’s typically much easier to enter the digits in groups, similar to how they’re displayed on the front of an actual credit card, i.e.
4444 4444 4444 4444
is much easier to ent...
Can't find a “not equal” css attribute selector
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One problem with the accepted answer is that it will also select elements that do not have a foo attribute at all. Consider:
<div>No foo</div>
<div foo="">Empty foo</div>
<div foo="x">XXX</div>
<div foo="y">YYY</div>
<div foo="z"&g...
Delete a project from SonarQube
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Updated for Sonar 2.11:
Select the project (from the home page)
Then click on the Project Deletion link on the bottom of the left panel
Finally, confirm using the Delete Project button
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