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Convert Rows to columns using 'Pivot' in SQL Server
...defined above logic with the @cols and @query ... there is an error.` Invalid object name 'cte3'.` how do you fix that. –
– Elizabeth
Mar 1 '16 at 18:59
3
...
What's the difference between using “let” and “var”?
...ing them before the initialization results in a ReferenceError. Variable said to be in "temporal dead zone" from the start of the block until the initialization is processed.
function checkHoisting() {
console.log(foo); // ReferenceError
let foo = "Foo";
console.log(foo); // Foo
}
checkHoist...
Sequence contains more than one element
...SingleOrDefault" - from what I can gather the OP is looking for a customer id which (I assume) should be unique, therefore, SingleOrDefault is actually more appropriate than FirstOrDefault. Also, this has actually raised a more serious problem with the OP's database design as it shows that it is pos...
How to change MenuItem icon in ActionBar programmatically
...
You can't use findViewById() on menu items in onCreate() because the menu layout isn't inflated yet. You could create a global Menu variable and initialize it in the onCreateOptionsMenu() and then use it in your onClick().
private Menu menu;
In y...
Select Last Row in the Table
...le inserted into my table. I know that the method first() exists and provides you with the first file in the table but I don't know how to get the last insert.
...
Is there a `pointer-events:hoverOnly` or similar in CSS?
... it's easy enough to do in JQuery. Here's how I've done it:
HTML
<div
id="toplayer"
class="layer"
style="
z-index: 20;
pointer-events: none;
background-color: white;
display: none;
"
>
Top layer
</div>
<div id="bottomlayer" class="layer" style="z-index: 10"&g...
SQLite table constraint - unique on multiple columns
... adding UNIQUE(i, j) to the create statement is completely ignored on android. It creates the table, but leaves off the UNIQUE constraint. I was only able to do this by using an index.
– gattsbr
Aug 11 at 14:55
...
How to pause a YouTube player when hiding the iframe?
I have a hidden div containing a YouTube video in an <iframe> . When the user clicks on a link, this div becomes visible, the user should then be able to play the video.
...
MFC学习总结 (90个技巧) dlg 上建立View - C/C++ - 清泛网 - 专注C++内核技术
...S_EX_CONTROLPARENT);
RECT rect;
m_tabsheet.GetWindowRect(&rect);
int width = rect.right - rect.left;
int height = rect.bottom - rect.top;
//调整属性页的大小和位置
m_tabsheet.SetWindowPos(NULL, 225, 225, width-82, height,SWP_NOACTIVATE);
//属性页的添加完成。如果要...
How to convert SSH keypairs generated using PuTTYgen (Windows) into key-pairs used by ssh-agent and
...Export OpenSSH and export your private key
Copy your private key to ~/.ssh/id_dsa (or id_rsa).
Create the RFC 4716 version of the public key using ssh-keygen
ssh-keygen -e -f ~/.ssh/id_dsa > ~/.ssh/id_dsa_com.pub
Convert the RFC 4716 version of the public key to the OpenSSH format:
ssh-keygen ...