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What is the App_Data folder used for in Visual Studio?
...is essentially a storage point for file-based data stores (as opposed to a SQL server database store for example). Some simple sites make use of it for content stored as XML for example, typically where hosting charges for a DB are expensive.
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Change SQLite database mode to read-write
How can I change an SQLite database from read-only to read-write?
14 Answers
14
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How to move out of auto-completed brackets in IntelliJ IDEA (without using the arrow keys)?
...visual indication of tab 'exit' position. For now, it should work in Java, SQL, Python and some other files. It will take some time for other languages to catch up - some language-specific code changes are required.
The feature is disabled by default, you can enable it in
Settings -> Edito...
Why is using a wild card with a Java import statement bad?
...h cleaner to import entire packages; the issues identified here (e.g. java.sql.Date vs java.util.Date) are easily remedied by other means, not really addressed by specific imports and certainly do not justify insanely pedantic imports on all classes. There is nothing more disconcerting than opening...
How to get year, month, day, hours, minutes, seconds and milliseconds of the current moment in Java?
....text.SimpleDateFormat:
Date now = new Date(); // java.util.Date, NOT java.sql.Date or java.sql.Timestamp!
String format1 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS", Locale.ENGLISH).format(now);
String format2 = new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss Z", Locale.ENGLISH).format(now);
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Google Sheets API Setup · App Inventor 2 中文网
...有限公司 版权所有，未经书面许可，不得转载或使用 隐私策略和使用条款 技术支持 service@fun123.cn
Why is SELECT * considered harmful?
...ich was which? SELECT * can also confuse views (at least in some versions SQL Server) when underlying table structures change -- the view is not rebuilt, and the data which comes back can be nonsense. And the worst part of it is that you can take care to name your columns whatever you want, but th...
How to verify if a file exists in a batch file?
...ndler echo Now Exiting && Exit
if not exist C:\myprogram\html\data.sql Exit
We will take those three files and put it in a temporary place. After deleting the folder, it will restore those three files.
xcopy "test" "C:\temp"
xcopy "test2" "C:\temp"
del C:\myprogram\sync\
xcopy "C:\temp" "...
Overriding a Rails default_scope
... like: def self.random; unscoped.order('rand()'); end unscoped removes ALL sql before it, not just what is listed under default_scope. While technically a correct answer, be careful using unstopped
– Schneems
Dec 25 '11 at 21:58
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Retrieving the last record in each group - MySQL
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MySQL 8.0 now supports windowing functions, like almost all popular SQL implementations. With this standard syntax, we can write greatest-n-per-group queries:
WITH ranked_messages AS (
SELECT m.*, ROW_NUMBER() OVER (PARTITIO...