大约有 47,000 项符合查询结果（耗时：0.0391秒） [XML]
Ways to save enums in database
...ering the cards by the numerical value of the enumeration is meaningless:
SELECT Suit FROM Cards
ORDER BY SuitID; --where SuitID is integer value(4,1,3,2,0)
Suit
------
Spade
Heart
Diamond
Club
Unknown
That's not the order we want - we want them in enumeration order:
SELECT Suit FROM Cards
ORDE...
HTML - Display image after selecting filename [duplicate]
I have a form that allows me with
3 Answers
3
...
Using TortoiseSVN via the command line
...ssociated with it. But on the installer (of version 1.7 and later) you can select the "command line client tools" option so you can call svn commands (like svn commit and svn update) from the command line.
Here's a screenshot of the "command line client tools" option in the installer, you need to m...
SQLite UPSERT / UPDATE OR INSERT
... at this code:
INSERT INTO players (id, name, age)
VALUES (
coalesce((select id from players where user_name='steven'),
(select max(id) from drawings) + 1),
32)
The trick is in coalesce. It returns the id of the user 'steven' if any, and otherwise, it returns a new fresh id.
...
jQuery Datepicker onchange event issue
...
You can use the datepicker's onSelect event.
$(".date").datepicker({
onSelect: function(dateText) {
console.log("Selected date: " + dateText + "; input's current value: " + this.value);
}
});
Live example:
$(".date")
.datepicker({
...
Why use the INCLUDE clause when creating an index?
...ot in the WHERE/JOIN/GROUP BY/ORDER BY, but only in the column list in the SELECT clause.
The INCLUDE clause adds the data at the lowest/leaf level, rather than in the index tree.
This makes the index smaller because it's not part of the tree
INCLUDE columns are not key columns in the index, so th...
Hidden Features of Xcode 4
... View > Utilities > Code Snippet Library. To add a new code snippet, select some text in the editor view and drag it into the snippet library. You can either drag a snippet out and drop it in your code to use it, or, much more conveniently, assign a completion shortcut to it.
When you type i...
How to exclude specific folders or files from validation in Eclipse?
...ge below)
Note: In Eclipse Indigo you have to Right click the folder and select properties and then select resource in the left navigation.
share
|
improve this answer
|
...
Returning anonymous type in C#
...C = new MyDC())
{
var TheQueryFromDB = (....
select new { SomeVariable = ....,
AnotherVariable = ....}
).ToList();
return TheQueryFromDB
.Select(s => (
SomeVariable...
Is “else if” a single keyword?
...s section on keywords.
The grammar in section 6.4 also makes this clear:
selection-statement:
if ( condition ) statement
if ( condition ) statement else statement
The if in else if is a statement following the else term. The section also says:
[...]The substatement in a selection-statement...