大约有 19,000 项符合查询结果（耗时：0.0349秒） [XML]
How to install the Raspberry Pi cross compiler on my Linux host machine?
...crosstool-ng/builds/arm-l
inux-gnueabihf-raspbian-linux/install --with-sysroot=/cbuild/slaves/oort61/crosstool-ng/builds/
arm-linux-gnueabihf-raspbian-linux/install/arm-linux-gnueabihf/libc --enable-languages=c,c++,fo
rtran --disable-multilib --with-arch=armv6 --with-tune=arm1176jz-s --with-fpu=v...
Pass ruby script file to rails console
...
Here's the hack I'm using:
rr() {
rails_root="$(bundle exec rails runner "puts Rails.root")"
rp="$(relpath "$1" "$rails_root")"
bundle exec rails runner "eval(File.read '$rp')"
}
relpath() {python -c "import os.path; print os.path.relpath('$1','${2:-$PWD}')...
Is there documentation for the Rails column types?
...ded by Rails mostly for compatibility with database systems. For instance, MySQL's TIMESTAMP datatype is stored as a unix timestamp. Its valid range goes from 1970 to 2038, and the time is stored as the number of seconds that have elapsed since the last epoch, which is supposedly standard, but in pr...
How Can I Set the Default Value of a Timestamp Column to the Current Timestamp with Laravel Migratio
...e->timestamp('created_at')->useCurrent();
Back to the question, on MySQL you could also use the ON UPDATE clause through DB::raw():
$table->timestamp('updated_at')->default(DB::raw('CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP'));
Gotchas
MySQL
Starting with MySQL 5.7, 0000-00-00...
Replace Default Null Values Returned From Left Outer Join
...
If it is MySQL, IsNull should be replaced with 'IFNULL'. Thanks.
– Dhanushka
Jul 14 '14 at 6:54
...
How do I query between two dates using MySQL?
...
DATE() is a MySQL function that extracts only the date part of a date or date/time expression
SELECT * FROM table_name WHERE DATE(date_field) BETWEEN '2016-12-01' AND '2016-12-10';
...
MySQL: multiple tables or one table with many columns?
...
Recently I was faced with this same problem, because MySQL InnoDB tables have a relatively small length limit (~8000 bytes). In my problem table (data from very lengthy insurance forms, more than 100 columns) we have multiple varchar columns, all UTF8. So we easily filled the ~...
Increasing client_max_body_size in Nginx conf on AWS Elastic Beanstalk
... "/etc/nginx/conf.d/proxy.conf" :
mode: "000755"
owner: root
group: root
content: |
client_max_body_size 20M;
This generates a proxy.conf file inside of the /etc/nginx/conf.d directory. The proxy.conf file simply contains the one liner client_max_body_...
Order a MySQL table by two columns
How do I sort a MySQL table by two columns?
5 Answers
5
...
Does SQLAlchemy have an equivalent of Django's get_or_create?
...ote that begin_nested automatically triggers a flush.
Note that if using MySQL, the transaction isolation level must be set to READ COMMITTED rather than REPEATABLE READ for this to work. Django's get_or_create (and here) uses the same stratagem, see also the Django documentation.
...