大约有 42,000 项符合查询结果（耗时：0.0283秒） [XML]
What is SYSNAME data type in SQL Server?
...bject names. The exact definition of
sysname is related to the rules for identifiers. Therefore, it can
vary between instances of SQL Server. sysname is functionally the same
as nvarchar(128) except that, by default, sysname is NOT NULL. In
earlier versions of SQL Server, sysname is defined ...
How to assign the output of a command to a Makefile variable
...tween shell and the opening parentheses and only after removing the space did my makefile output text
– peterchaula
Sep 28 '17 at 15:51
...
How to delete a certain row from mysql table with same column values?
...
Add a limit to the delete query
delete from orders
where id_users = 1 and id_product = 2
limit 1
share
|
improve this answer
|
follow
|
...
Using “label for” on radio buttons
...lmost got it. It should be this:
<input type="radio" name="group1" id="r1" value="1" />
<label for="r1"> button one</label>
The value in for should be the id of the element you are labeling.
sh...
RESTful on Play! framework
...ept header for content negotiation. First the routes file:
GET /user/{id} Application.user
POST /user/ Application.createUser
PUT /user/{id} Application.updateUser
DELETE /user/{id} Application.deleteUser
You don't specify any content ty...
How to get last N records with activerecord?
...last(N)
Example:
User.last(5)
Returns 5 users in descending order by their id.
Deprecated (Old Answer)
An active record query like this I think would get you what you want ('Something' is the model name):
Something.find(:all, :order => "id desc", :limit => 5).reverse
edit: As noted in the com...
How can I get device ID for Admob
I'm using Eclipse to develop applications for android, and I want to integrate Admob to make money.
The tutorial says I should watch the LogCat to find ID, but where is it?
...
Migration: Cannot add foreign key constraint
...ma::create('priorities', function($table) {
$table->increments('id', true);
$table->integer('user_id')->unsigned();
$table->string('priority_name');
$table->smallInteger('rank');
$table->text('class');
$table->timestamps('timecreat...
How do I create a foreign key in SQL Server?
...
create table question_bank
(
question_id uniqueidentifier primary key,
question_exam_id uniqueidentifier not null,
question_text varchar(1024) not null,
question_point_value decimal,
constraint fk_questionbank_exams foreign key (question_exam_id) ...
MySQL Error 1093 - Can't specify target table for update in FROM clause
...n case certain operations are carried out, merging cannot happen. E.g. provide the derived dummy table with a LIMIT (to inifity) and the error will never occur. That's pretty hackish though and there is still the risk that future versions of MySQL will support merging queries with LIMIT after all.
...