大约有 42,000 项符合查询结果（耗时：0.0413秒） [XML]
Cannot insert explicit value for identity column in table 'table' when IDENTITY_INSERT is set to OFF
...
You're inserting values for OperationId that is an identity column.
You can turn on identity insert on the table like this so that you can specify your own identity values.
SET IDENTITY_INSERT Table1 ON
INSERT INTO Table1
/*Note the column list is REQUIRED he...
What does LayoutInflater in Android do?
What is the use of LayoutInflater in Android?
15 Answers
15
...
Bootstrap 3 jquery event for active tab change
...p 3 tab/navbar and literally all suggestions google spat out were wrong/did not work.
6 Answers
...
How to prevent buttons from submitting forms
...citly:
<button type="button">Button</button>
in order to override the default submit type. I just want to point out the reason why this happens.
share
|
improve this answer
|
...
What is the difference between properties and attributes in HTML?
...a one-to-one relationship. For instance, for this HTML element:
<input id="the-input" type="text" value="Name:">
the corresponding DOM node will have id,type, and value properties (among others):
The id property is a reflected property for the id attribute: Getting the property reads the ...
Select random row from a sqlite table
...extend this solution to a join? When using SELECT a.foo FROM a JOIN b ON a.id = b.id WHERE b.bar = 2 ORDER BY RANDOM() LIMIT 1; I always get the same row.
– Helmut Grohne
Sep 19 '13 at 8:18
...
PostgreSQL query to return results as a comma separated list
Let say you have a SELECT id from table query (the real case is a complex query) that does return you several results.
5 ...
Rails where condition using NOT NIL
...The canonical way to do this with Rails 3:
Foo.includes(:bar).where("bars.id IS NOT NULL")
ActiveRecord 4.0 and above adds where.not so you can do this:
Foo.includes(:bar).where.not('bars.id' => nil)
Foo.includes(:bar).where.not(bars: { id: nil })
When working with scopes between tables, I ...
Cross-reference (named anchor) in markdown
...e but SO's renderer strips out the anchor.)
Note on self-closing tags and id= versus name=
An earlier version of this post suggested using <a id='tith' />, using the self-closing syntax for XHTML, and using the id attribute instead of name.
XHTML allows for any tag to be 'empty' and 'self-c...
schema builder laravel migrations unique on two columns
...ique key across multiple columns.
$table->unique(array('mytext', 'user_id'));
or (a little neater)
$table->unique(['mytext', 'user_id']);
share
|
improve this answer
|
...