大约有 800 项符合查询结果（耗时：0.0207秒） [XML]
How to reset or change the MySQL root password?
...
Worked with mysql v 5.0 as well... sudo dpkg-reconfigure mysql-server-5.0
– dsghi
Feb 24 '15 at 3:19
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How to set a default value for a datetime column to record creation time in a migration?
...ere is a sample migration:
class CreatePosts < ActiveRecord::Migration[5.0]
def change
create_table :posts do |t|
t.datetime :modified_at, default: -> { 'CURRENT_TIMESTAMP' }
t.timestamps
end
end
end
See discussion at https://github.com/rails/rails/issues/27077 and ...
Can overridden methods differ in return type?
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Yes it may differ but their are some limitations.
Before Java 5.0, when you override a method, both parameters and return type must match exactly. In Java 5.0, it introduces a new facility called covariant return type. You can override a method with the same signature but returns a subc...
Xcode 4 - “Valid signing identity not found” error on provisioning profiles on a new Macintosh insta
...port/import sequence.
Picture for XCode 4.6 added by WP
Edit for XCode 5.0 or newer:
Open XCode -> Preferences ('Command' + ',')
Select the Apple ID from the list.
Click on the SETTING icon near the bottom-left corner of window, and choose EXPORT ACCOUNTS... Xcode asks you to choose a file...
How to Detect if I'm Compiling Code with a particular Visual Studio version?
...7 version 15.3)
MSVC++ 14.1 _MSC_VER == 1910 (Visual Studio 2017 version 15.0)
MSVC++ 14.0 _MSC_VER == 1900 (Visual Studio 2015 version 14.0)
MSVC++ 12.0 _MSC_VER == 1800 (Visual Studio 2013 version 12.0)
MSVC++ 11.0 _MSC_VER == 1700 (Visual Studio 2012 version 11.0)
MSVC++ 10.0 _MSC_VER == 160...
How to properly import a selfsigned certificate into Java keystore that is available to all Java app
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D:\Java\jdk1.5.0_10\bin\keytool -import -file "D:\Certificates\SDS services\Dev\dev-sdsservices-was8.infavig.com.cer" -keystore "D:\Java\jdk1.5.0_10\jre\lib\security\cacerts" -alias "sds certificate"
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MySQL remove all whitespaces from the entire column
...ol_name` = REPLACE(`col_name`, '\n', '')
http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_replace
To remove first and last space(s) of column :
UPDATE `table` SET `col_name` = TRIM(`col_name`)
http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_trim
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Flat file databases [closed]
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SQLite was build into 5.0+ by default, but discountinued (!) from PHP 5.4+ on !!! As I write this in July 2012, SQLite will not work on up-to-date systems anymore by default. Official statement here
– Sliq
Ju...
UIView with rounded corners and drop shadow?
... = [[UIView alloc] initWithFrame: frame];
roundedView.layer.cornerRadius = 5.0;
roundedView.layer.masksToBounds = YES;
UIView* shadowView = [[UIView alloc] initWithFrame: frame];
shadowView.layer.shadowColor = [UIColor blackColor].CGColor;
shadowView.layer.shadowRadius = 5.0;
shadowView.layer.shado...
How do you set a default value for a MySQL Datetime column?
...ing like the payment plan for a 30-year mortgage. dev.mysql.com/doc/refman/5.0/en/datetime.html
– Kip
Sep 27 '11 at 17:01
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