HKDevTips: May 2007

Wednesday, May 30, 2007

P2P Service in Windows

Nice try..

> net start p2psvr

>netsh

>p2p pnrp clould

Friday, May 25, 2007

String Concatenation in SQL Server

When using '+' to concatenate two string field in SQL server (e.g. a+b), if one of them is NULL, then the whole string will become NULL. There is one solution to solve it:

COALESCE(a,'') + COALESCE(b,'')

So if any of the field is NULL, it will evaluate as an empty string. That's it!

Monday, May 7, 2007

Just played around with Greasemonkey

I'm not a javascript expert, but just played around using js in greasemonkey, quite funny.


// ==UserScript==
// @name          FilterGuruEntry
// @description   Filter Guru Entry
// @include http://www.guru.com/pro/search_results.cfm*
// ==/UserScript==

var allTRs, thisTR;

allTRs = document.getElementsByTagName('SPAN');

for (var i = 0; i < allTRs.length; i++) {

thisTR = allTRs[i];

if (thisTR.getAttribute("class") == "btblue") {
      myTR = thisTR.parentNode.parentNode.parentNode.parentNode.parentNode.parentNode.parentNode;

myTD = thisTR.parentNode.parentNode.parentNode.parentNode.parentNode.parentNode;

if (myTR.nodeName == "TR") {

myTR.removeChild(myTD);

}

}

}

Thursday, May 3, 2007

SQL Express installation messages

In case you just skip the post-installation messages... that may helps :P

Configuring and Managing SQL Server Express
·    For improved manageability and security, SQL Server 2005 provides more control over the SQL Server surface area on your system. To minimize the surface area, the following default configurations have been applied to your instance of SQL server:

o    TCP/IP connections are disabled
o    Named Pipes is disabled
o    SQL Browser must be started manually
o    OPENROWSET and OPENDATASOURCE have been disabled
o    CLR integration is disabled
o    OLE automation is disabled
o    xp_cmdshell is disabled

To enable or disable features and services, run the SQL Server Surface Area Configuration tool from the Start menu.

·    To install SQL Server Management Studio Express Edition, download it from the SQL Server Developer Center on MSDN (http://go.microsoft.com/fwlink/?linkid=51793).

Documentation and Samples
To install SQL Server 2005 Books Online, download them from the SQL Server Developer Center on MSDN (http://go.microsoft.com/fwlink/?linkid=51793).

To install the .NET Framework SDK, see "Installing the .NET Framework SDK" in SQL Server Books Online.

To install sample databases and code samples, download the SQL Server Samples from the SQL Server Developer Center on MSDN (http://go.microsoft.com/fwlink/?linkid=51793).

HKDevTips