大约有 47,000 项符合查询结果（耗时：0.0470秒） [XML]
How to get the insert ID in JDBC?
...or Oracle, you can invoke a CallableStatement with a RETURNING clause or a SELECT CURRVAL(sequencename) (or whatever DB-specific syntax to do so) directly after the INSERT in the same transaction to obtain the last generated key. See also this answer.
...
How to perform OR condition in django queryset?
...st_name__startswith='D'
)
leads to
In [5]: str(queryset.query)
Out[5]: 'SELECT "auth_user"."id", "auth_user"."password", "auth_user"."last_login",
"auth_user"."is_superuser", "auth_user"."username", "auth_user"."first_name",
"auth_user"."last_name", "auth_user"."email", "auth_user"."is_staff",
"a...
Enabling auto layout in iOS 6 while remaining backwards compatible with iOS 5
...tolayout can be enabled or disabled on each .storyboard or .xib file. Just select the particular file and modify the "Use Autolayout" property using the File inspector in Xcode:
Using autolayout enabled interface files with the deployment target set to an iOS version prior to 6.0 results in compi...
C# Linq Group By on multiple columns [duplicate]
... c.School,
c.Friend,
c.FavoriteColor,
} into gcs
select new ConsolidatedChild()
{
School = gcs.Key.School,
Friend = gcs.Key.Friend,
FavoriteColor = gcs.Key.FavoriteColor,
Children = gcs.ToList(),
};
var consolidatedChildren =
...
R: Comment out block of code [duplicate]
...tors use something like command or control and single quote to comment out selected lines of code. In RStudio it's Command or Control+/. Check in your editor.
It's still commenting line by line, but they also uncomment selected lines as well. For the Mac RGUI it's command-option ' (I'm imagining...
Find and Replace text in the entire table using a MySQL query
...his_text";
$replace = "replace_with_this_text";
$loop = mysql_query("
SELECT
concat('UPDATE ',table_schema,'.',table_name, ' SET ',column_name, '=replace(',column_name,', ''{$find}'', ''{$replace}'');') AS s
FROM
information_schema.columns
WHERE
table_schema = '{...
MongoDB Show all contents from all collections
...
Step 1: See all your databases:
show dbs
Step 2: Select the database
use your_database_name
Step 3: Show the collections
show collections
This will list all the collections in your selected database.
Step 4: See all the data
db.collection_name.find()
or
db.colle...
How to check a radio button with jQuery?
...
Found out that since there is only one that can be selected, $('input[name="type"]:checked').val() is nice as well.
– huggie
Dec 1 '14 at 13:40
...
Windows Explorer “Command Prompt Here” [closed]
... the command window.
Edit:
In case you are in a folder and you already selected some of its contents (file/folder) this wont work. In that case Click on the empty area inside the folder to deselect any previously selected files and repeat.
Edit2:
Another way you can open terminal in current di...
difference between primary key and unique key
...ey, unique key, etc are collectively called as Candidate Key.
However, DBA selected a key from candidate key for searching records is called Primary key.
Difference between Primary Key and Unique key
1. Behavior: Primary Key is used to identify a row (record) in a table, whereas Unique-key is to...