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SQL: How to get the count of each distinct value in a column?
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SELECT
category,
COUNT(*) AS `num`
FROM
posts
GROUP BY
category
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Difference between datetime and timestamp in sqlserver? [duplicate]
..., MSDN points out that rowversion can be cheated to be non-unique by using SELECT INTO - although they point out that this is a bad idea. If you use it properly (i.e. let the database manage the rowversion value) then it will always be unique and monotonically increasing - which can be very handy.
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Apply style to parent if it has child with css [duplicate]
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It's not possible with CSS3. There is a proposed CSS4 selector, $, to do just that, which could look like this (Selecting the li element):
ul $li ul.sub { ... }
See the list of CSS4 Selectors here.
As an alternative, with jQuery, a one-liner you could make use of would be th...
Xenocode Postbuild 2010 for .NET 混淆工具的详细使用步骤 - 更多技术 - ...
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6、选中图中所示的那两个复选框
7、点击【Select String】按钮进行设置
8、点击【output 标签】
9, 生成混淆后的文件
如果是安装好文件后 第一次 混淆文件，则需要把我们的 序列号 先...
Using XPATH to search text containing
...with plain XML and XSL files in Microsoft's XML Notepad:
<xsl:value-of select="count(//td[text()='&nbsp;'])" />
The value returned is 1, which is the correct value in my test case.
However, I did have to declare nbsp as an entity within my XML and XSL using the following:
<!DOCTYP...
Load a UIView from nib in Swift
...pe not found in.." then you haven't set the view's class in the .xib file
Select your view in the .xib file, and press cmd + opt + 4 and in the class input, enter your class
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Animated loading image in picasso
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Use romannurik.github.io/AndroidAssetStudio/index.html (select "Launcher icon generator") to create mdpi, hdpi, xhdpi, etc.
– CoolMind
Jan 10 '18 at 8:40
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Difference between numeric, float and decimal in SQL Server
... there is still data type precedence, which can be crucial in some cases.
SELECT SQL_VARIANT_PROPERTY(CAST(1 AS NUMERIC) + CAST(1 AS DECIMAL),'basetype')
The resulting data type is numeric because it takes data type precedence.
Exhaustive list of data types by precedence:
Reference link
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Do you use source control for your database items? [closed]
... under source control, because otherwise it's a manual process to rollback/selectively apply schema changes to match your code-base branch. If I have three dependent projects, and I switch all of them to a particular branch (e.g. with a particular set of schema migrations), then I should be able to...
How to make HTML table cell editable?
... .appendTo(tdObj)
.trigger("focus")
.trigger("select");
inputObj.keyup(function(event){
if(13 == event.which) { // press ENTER-key
var text = $(this).val();
tdObj.html(text);
}
else if(27 == event.which) { // press ESC-key
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