大约有 41,000 项符合查询结果（耗时：0.0453秒） [XML]
When do I need to use Begin / End Blocks and the Go keyword in SQL Server?
..., and IF statements, etc, where you need more then one step...
IF EXISTS (SELECT * FROM my_table WHERE id = @id)
BEGIN
INSERT INTO Log SELECT @id, 'deleted'
DELETE my_table WHERE id = @id
END
share
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ALTER DATABASE failed because a lock could not be placed on database
... for a couple of minutes)
CREATE DATABASE TESTING123
GO
USE TESTING123;
SELECT NEWID() AS X INTO FOO
FROM sys.objects s1,sys.objects s2,sys.objects s3,sys.objects s4 ,sys.objects s5 ,sys.objects s6
Connections 2 and 3
set lock_timeout 5;
ALTER DATABASE TESTING123 SET SINGLE_USER WITH ROLLBACK...
How to undo “git commit --amend” done instead of “git commit”
...
additionally, this answer allows you to selectively pick the changes that you accidentally 'amended', to does provide some additional value to the git reset --soft HEAD@{1} approach (which did solve my problem BTW)
– Wiebe Tijsma
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Unicode character as bullet for list-item in CSS
...
You can construct it:
#modal-select-your-position li {
/* handle multiline */
overflow: visible;
padding-left: 17px;
position: relative;
}
#modal-select-your-position li:before {
/* your own marker in content */
content: "—";
left: 0...
Inspect attached event handlers for any DOM element
...ilt in part to FireBug (Extension for FireFox) for events when HTML tag is selected.
– Musa Haidari
Jul 16 '14 at 10:00
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How to cherry-pick multiple commits
....
Press F5 in gitk. Nothing changes. But no HEAD is marked.
Run git branch selection
Press F5 in gitk. The new branch with its commits appears.
This should clarify things:
Commit a is the new root destination of the group.
Commit b is the commit before the first commit of the group (exclusive).
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How to remove all rows in a numpy.ndarray that contain non-numeric values
... @naught101 You also need to change any to all. Since you want to select rows where "all are finite", instead of selecting rows where "not any are nan".
– AnnanFay
Jun 6 '17 at 4:59
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iOS Remote Debugging
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The selected answer is only for Safari. At the moment it's not possible to do real remote debugging in Chrome on iOS, but as with most mobile browsers you can use WeInRe for some simple debugging. It's a bit work to set up, but l...
Maven2: Missing artifact but jars are in place
...s of turning it off and on again.
Try right-clicking on the project and selecting Maven->Update Project Configuration.
Disable then re-enable dependency management (right-click Maven->Disable Dependency Management then Maven->Enable Dependency Management
Close the project and reopen it.
...
in a “using” block is a SqlConnection closed on return or exception?
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Here is my Template. Everything you need to select data from an SQL server. Connection is closed and disposed and errors in connection and execution are caught.
string connString = System.Configuration.ConfigurationManager.ConnectionStrings["CompanyServer"].Connection...