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Add column to SQL Server
...le
ALTER TABLE [table]
ADD Column1 Datatype
E.g
ALTER TABLE [test]
ADD ID Int
If User wants to make it auto incremented then
ALTER TABLE [test]
ADD ID Int IDENTITY(1,1) NOT NULL
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imp...
How to sort mongodb with pymongo
...es key and direction as parameters.
So if you want to sort by, let's say, id then you should .sort("_id", 1)
For multiple fields:
.sort([("field1", pymongo.ASCENDING), ("field2", pymongo.DESCENDING)])
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How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails
...ion statement just by putting ".to_sql" at the end. This question also provides that answer: stackoverflow.com/questions/3814738/…
– Steve Midgley
Sep 17 '14 at 5:03
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How can I make a JPA OneToOne relation lazy
...be lazy.
Replacing one-to-one with one-to-many is pretty much never a good idea. You can replace it with unique many-to-one but there are other (possibly better) options.
Rob H. has a valid point, however you may not be able to implement it depending on your model (e.g. if your one-to-one associat...
Action Image MVC3 Razor
...thod like this:
// Sample usage in CSHTML
@Html.ActionImage("Edit", new { id = MyId }, "~/Content/Images/Image.bmp", "Edit")
Here is a sample extension method for the code above:
// Extension method
public static MvcHtmlString ActionImage(this HtmlHelper html, string action, object routeValues, ...
App Inventor iOS App编译全流程：7步搞定苹果签名上架（更新版） - App应...
...问题可参考这篇帖子。
第3步：创建应用标识符（App ID）
在开发者门户点击"标识符"→ 点"+"→ 选"App ID"→ 选"App"。
关键参数：
- 描述：用应用名称即可
- 应用ID前缀：选带"(Team ID)"...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
..._unicode_ci; -- COLLATE added
CALL updateProductUsers(@rUsername, @rProductID, @rPerm);
Option 2: add COLLATE to the WHERE clause:
CREATE PROCEDURE updateProductUsers(
IN rUsername VARCHAR(24),
IN rProductID INT UNSIGNED,
IN rPerm VARCHAR(16))
BEGIN
UPDATE productUsers
INN...
Send email with PHPMailer - embed image in body
...e('img/2u_cs_mini.jpg', 'logo_2u');
and on the <img> tag put src='cid:logo_2u'
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兼容主流浏览器的JS复制内容到剪贴板 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...opy_gettext = function(){
clipboardswfdata = document.getElementById('test_text').value;
//alert(clipboardswfdata);
window.document.clipboardswf.SetVariable('str', clipboardswfdata);
}
var floatwin = function(){
alert('复制成功！');
//docum...
What is the logic behind the “using” keyword in C++?
...
In C++11, the using keyword when used for type alias is identical to typedef.
7.1.3.2
A typedef-name can also be introduced by an alias-declaration. The
identifier following the using keyword becomes a typedef-name and the
optional attribute-specifier-seq following the identifier...