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Compare dates in MySQL
...
You can try below query,
select * from players
where
us_reg_date between '2000-07-05'
and
DATE_ADD('2011-11-10',INTERVAL 1 DAY)
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How can i query for null values in entity framework?
...try in table
where entry.something.Equals(value)
select entry;
Workaround for Linq-to-Entities (ouch!):
var result = from entry in table
where (value == null ? entry.something == null : entry.something == value)
select entry;
This is a nasty b...
Which version of C# am I using
...ht. One reason is that Visual Studio allows multi-targetting (i.e. you can select the .NET Target Framework version in the project properties), the other reason is that newer Roslyn versions need to be added via NUGET to your project. Third, as I wrote here, csc.exe is limited to version 5.0 and can...
App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
...原始调用中指定的标签以及新行或更新行的行 ID。
AfterSelect(tag,rowCount,rows)
此事件在异步 Select 调用后触发。
提供原始调用中指定的标签、返回的行数以及结果行数据。
AfterUpdate(tag,rowCount)
此事件在异步 Update 调用后触发。...
Is there an easy way to attach source in Eclipse?
...
Go to Properties (for the Project) -> Java Build Path -> Libraries
Select the Library you want to attach source/javadoc for and then expand it, you'll see a list like so:
Source Attachment: (none)
Javadoc location: (none)
Native library location: (none)
Access rules: (No restrictions)
Sel...
What is the difference between the template method and the strategy patterns?
...atum); }
}
In summary:
Template method pattern: compile-time algorithm selection by subclassing
Strategy pattern: run-time algorithm selection by containment
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“Insert if not exists” statement in SQLite
... and text you should be able to do like this:
INSERT INTO memos(id,text)
SELECT 5, 'text to insert'
WHERE NOT EXISTS(SELECT 1 FROM memos WHERE id = 5 AND text = 'text to insert');
If a record already contains a row where text is equal to 'text to insert' and id is equal to 5, then the insert op...
Set folder browser dialog start location
...
Just set the SelectedPath property before calling ShowDialog.
fdbLocation.SelectedPath = myFolder;
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...
HTML encoding issues - “” character showing up instead of “ ”
...aste the code.
Go "File -> Save As"
Enter you file name "example.html" (Select "Save as type: All Files (.)")
Select Encoding as UTF-8
Hit Save and you can now delete your old .html file and the encoding should be fixed
...
Is there a better way to express nested namespaces in C++ within the header
...A_HELPER_EXPAND(VA_COUNT_HELPER(__VA_ARGS__, 6, 5, 4, 3, 2, 1))
#define VA_SELECT_CAT(_Name, _Count, ...) VA_HELPER_EXPAND(_Name##_Count(__VA_ARGS__))
#define VA_SELECT_HELPER(_Name, _Count, ...) VA_SELECT_CAT(_Name, _Count, __VA_ARGS__)
#define VA_SELECT(_Name, ...) VA_SE...