大约有 40,000 项符合查询结果（耗时：0.0457秒） [XML]
There can be only one auto column
How do I correct the error from MySQL 'you can only have one auto increment column'.
4 Answers
...
How to migrate/convert from SVN to Mercurial (hg) on windows
...made
much simpler: Start the TortoiseHG
Workbench from the Start menu. Select
File --> Settings. Select Extensions
from the list. Check the 'convert'
checkbox and click OK. That's it! No
need to try to generate the config
file anymore and search it in the file
system. – bgever M...
How do I “Add Existing Item” an entire directory structure in Visual Studio?
...
tip - ensure the project is selected, not the solution - then you can do show all!
– niico
Dec 29 '13 at 15:56
...
E11000 duplicate key error index in mongodb mongoose
...find the index that you are not using anymore (in OP's case 'email'). Then select Drop Index
share
|
improve this answer
|
follow
|
...
Relative URLs in WordPress
... and found the core ticket #17048: URLs delivered to the browser should be root-relative. Where we can find the reasons explained by Andrew Nacin, lead core developer. He also links to this [wp-hackers] thread. On both those links, these are the key quotes on why WP doesn't use relative URLs:
Core ...
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...
ActiveRecord.find(array_of_ids), preserving order
...
The answer is for mysql only
There is a function in mysql called FIELD()
Here is how you could use it in .find():
>> ids = [100, 1, 6]
=> [100, 1, 6]
>> WordDocument.find(ids).collect(&:id)
=> [1, 6, 100]
>> WordD...
Using sed and grep/egrep to search and replace
I am using egrep -R followed by a regular expression containing about 10 unions, so like:
.jpg | .png | .gif etc. This works well, now I would like to replace all strings found with .bmp
...
How to efficiently build a tree from a flat structure?
...t AssociatedObject { get; set; }
}
IEnumerable<Node> BuildTreeAndGetRoots(List<MyObject> actualObjects)
{
Dictionary<int, Node> lookup = new Dictionary<int, Node>();
actualObjects.ForEach(x => lookup.Add(x.ID, new Node { AssociatedObject = x }));
foreach (var ...
Pass Array Parameter in SqlCommand
...AddWithValue(parameters[i], items[i]);
}
cmd.CommandText = string.Format("SELECT * from TableA WHERE Age IN ({0})", string.Join(", ", parameters));
cmd.Connection = new SqlConnection(connStr);
UPDATE: Here is an extended and reusable solution that uses Adam's answer along with his suggested edit....