大约有 13,923 项符合查询结果（耗时：0.0210秒） [XML]
Which is more efficient: Multiple MySQL tables or one large table?
...eloping a custom ERP-system right now on top of a legacy system. I had to expand the old database tables with extra columns. I decided to make new tables for the new data. Some new features come in handy for the legacy system and now I can easily integrate them without having to rewrite too much of ...
Apache and Node.js on the Same Server
...er way of serving static content. Node is fast, powerful, elegant, and a sexy tool with the raw power of V8 and a flat stack with no in-built dependencies.
I also want the ease/flexibility of Apache and yet the grunt and elegance of Node.JS, why can't I have both?
Fortunately with the ProxyPass d...
COUNT(*) vs. COUNT(1) vs. COUNT(pk): which is better? [duplicate]
...ifferent thing, they just share a common token, i.e. *.
An alternate syntax
In fact, if it is not permitted to name a field as same as its table name, RDBMS language designer could give COUNT(tableNameHere) the same semantics as COUNT(*). Example:
For counting rows we could have this:
SELECT COU...
Differences between Intent and PendingIntent
...e. It holds an abstract description of an operation to be performed.
For example: say you have an Activity that needs to launch an email client and send an email. To do this, your Activity would send an Intent with the action ACTION_SEND, along with the appropriate chooser, to the Android Intent Re...
how to mysqldump remote db from local machine
...
One can invoke mysqldump locally against a remote server.
Example that worked for me:
mysqldump -h hostname-of-the-server -u mysql_user -p database_name > file.sql
I followed the mysqldump documentation on connection options.
...
Why does an image captured using camera intent gets rotated on some devices on Android?
...rotated 90 degrees. In this case, the camera software should populate the Exif data with the orientation that the photo should be viewed in.
Note that the below solution depends on the camera software/device manufacturer populating the Exif data, so it will work in most cases, but it is not a 100% ...
Cannot push to Git repository on Bitbucket
...estion).
For those who don't mind HTTPS and who are looking for a quick fix, scroll to the bottom of this answer for instructions under FOR THE LAZY
For those looking to solve the actual problem, follow the instructions below:
Fixing the SSH issue as fast as possible
This is a set of instruction...
Why are static variables considered evil?
... violates the principle that data is encapsulated in objects (that can be extended, information hiding, etc). Statics, in the way you are describing using them, are essentially to use them as a global variable to avoid dealing with issues like scope. However, global variables is one of the defining ...
Python vs Bash - In which kind of tasks each one outruns the other performance-wise? [closed]
... `--> COBOL Program --------'
Typical Linux flow...
Input Disk/SSD/User (runtime) --> sh/bash/ksh/zsh/... ----------> Output Disk/SSD/Screen/Printer
| ^
v ...
IOException: read failed, socket might closed - Bluetooth on Android 4.3
Currently I am trying to deal with a strange Exception when opening a BluetoothSocket on my Nexus 7 (2012), with Android 4.3 (Build JWR66Y, I guess the second 4.3 update). I have seen some related postings (e.g. https://stackoverflow.com/questions/13648373/bluetoothsocket-connect-throwing-exception...