大约有 48,000 项符合查询结果（耗时：0.0724秒） [XML]
PDO Prepared Inserts multiple rows in single query
...bably have a loop that populates data.
With prepared inserts you need to know the fields you're inserting to, and the number of fields to create the ? placeholders to bind your parameters.
insert into table (fielda, fieldb, ... ) values (?,?...), (?,?...)....
That is basically how we want the in...
Edit the root commit in Git?
...
As of Git version 1.7.12, you may now use
git rebase -i --root
Documentation
share
|
improve this answer
|
follow
|...
Multiple GitHub Accounts & SSH Config
...ithub / work.github) depending on what key/identity you'd like to use. But now you should be good to go! :)
share
|
improve this answer
|
follow
|
...
MySQL integer field is returned as string in PHP
...dl be sure that the elements in the row array had appropriate data types. Now I'm having to write code to manually cast every element to the data type I'm expecting.
– GordonM
Mar 25 '11 at 10:14
...
Drop columns whose name contains a specific string from pandas DataFrame
... 2.0 NaN NaN 1.0
1 20.0 NaN 10.0 5.0 NaN
Now filter
df.filter(like='result',axis=1)
Get..
result1 result34
0 2.0 NaN
1 NaN 10.0
share
|
improve...
explicit casting from super class to subclass
... you're essentially telling the compiler "trust me. I'm a professional, I know what I'm doing and I know that although you can't guarantee it, I'm telling you that this animal variable is definitely going to be a dog."
Since the animal isn't actually a dog (it's an animal, you could do Animal anima...
Homebrew install specific version of formula?
...Library/Formula/postgresql.rb
$ brew install postgresql
# … installing
Now that the older postgresql version is installed, we can re-install the latest formula in order to keep our repository clean:
$ git checkout -- Library/Formula/postgresql.rb
brew switch is your friend to change between t...
What does “error: option --single-version-externally-managed not recognized” indicate?
...ding PyObjC and astropy ). I've never seen this error before, but it's now also showing up on travis-ci builds for which nothing has changed.
...
Can I keep Nuget on the jQuery 1.9.x/1.x path (instead of upgrading to 2.x)?
...hat happens when the 1.9 branch gets updated because the package feed will now be on the 2.0+ track. I assume you'll have to switch to a new nuget package specifically written to support the 'legacy' 1.x version, or copy the script in manually each time.
In any case, I'll update this when I learn m...
UIView frame, bounds and center
I would like to know how to use these properties in the right manner.
6 Answers
6
...