大约有 47,000 项符合查询结果（耗时：0.0764秒） [XML]
Is it possible to use the SELECT INTO clause with UNION [ALL]?
...LECT * INTO tmpFerdeen FROM (
SELECT top 100 *
FROM Customers
UNION All
SELECT top 100 *
FROM CustomerEurope
UNION All
SELECT top 100 *
FROM CustomerAsia
UNION All
SELECT top 100 *
FROM CustomerAmericas
) as tmp
...
How do ACID and database transactions work?
... achieve the ACID properties.
Atomicity means that you can guarantee that all of a transaction happens, or none of it does; you can do complex operations as one single unit, all or nothing, and a crash, power failure, error, or anything else won't allow you to be in a state in which only some of th...
Purge or recreate a Ruby on Rails database
...o this:
This will reset your database and reload your current schema with all:
rake db:reset db:migrate
This will destroy your db and then create it and then migrate your current schema:
rake db:drop db:create db:migrate
All data will be lost in both scenarios.
...
WordPress is giving me 404 page not found for all pages except the homepage
All of a sudden I go to my WordPress website and all the pages give me a 404 page not found page. I'm assuming the problem lies with the permalink structure, which I could swear I did not touch. The permalink setting is on "month and name."
...
How to remove an iOS app from the App Store
...the various countries your app is available in. Click the blue “Deselect All” button.
Click “Save Changes” at the bottom.
Your app's state will then be “Developer Removed From Sale”, and it will no longer be available on the App Store in any country.
...
Getting “NoSuchMethodError: org.hamcrest.Matcher.describeMismatch” when running test in IntelliJ 10.
...ed Oct 24 '11 at 15:47
Garrett HallGarrett Hall
27k1010 gold badges5454 silver badges7373 bronze badges
...
How to get primary key column in Oracle?
....table_name, cols.column_name, cols.position, cons.status, cons.owner
FROM all_constraints cons, all_cons_columns cols
WHERE cols.table_name = 'TABLE_NAME'
AND cons.constraint_type = 'P'
AND cons.constraint_name = cols.constraint_name
AND cons.owner = cols.owner
ORDER BY cols.table_name, cols.positi...
How to remove all callbacks from a Handler?
I have a Handler from my sub-Activity that was called by the main Activity . This Handler is used by sub-classes to postDelay some Runnables, and I can't manage them. Now, in the onStop event, I need to remove them before finishing the Activity (somehow I called finish() , but it still call ...
Detach (move) subdirectory into separate Git repository
...br2 br3; do git branch -t $i origin/$i; done
git remote rm origin
or for all remote branches:
cd /ABC
for i in $(git branch -r | sed "s/.*origin\///"); do git branch -t $i origin/$i; done
git remote rm origin
Now you might want to also remove tags which have no relation with the subproject; you ...
Cross-browser testing: All major browsers on ONE machine
...ri
Adobe Flash Player
Download summary
Sandboxie
Part 2: Installation and configuration
Internet Explorer
Firefox
Opera
Chrome
Safari
Developer tools (and shortcuts)
Measured set-up time and disk space
Time needed per browser (install & config)
Optimal us...