大约有 42,000 项符合查询结果（耗时：0.0406秒） [XML]
How to remove array element in mongodb?
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Try the following query:
collection.update(
{ _id: id },
{ $pull: { 'contact.phone': { number: '+1786543589455' } } }
);
It will find document with the given _id and remove the phone +1786543589455 from its contact.phone array.
You can use $unset to unset the value i...
T-SQL: Deleting all duplicate rows but keeping one [duplicate]
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You didn't say what version you were using, but in SQL 2005 and above, you can use a common table expression with the OVER Clause. It goes a little something like this:
WITH cte AS (
SELECT[foo], [bar],
row_number() OVER...
How can I do an UPDATE statement with JOIN in SQL Server?
...f your SQL DBMS doesn't support MERGE):
ANSI/ISO:
update ud
set assid = (
select sale.assid
from sale
where sale.udid = ud.id
)
where exists (
select *
from sale
where sale.udid = ud.id
);
MySQL:
update ud u
inner join sale s on
...
How to fetch FetchType.LAZY associations with JPA and Hibernate in a Spring Controller
... Long> {
@Query("SELECT p FROM Person p JOIN FETCH p.roles WHERE p.id = (:id)")
public Person findByIdAndFetchRolesEagerly(@Param("id") Long id);
}
This method will use JPQL's fetch join clause to eagerly load the roles association in a single round-trip to the database, and will there...
Android: combining text & image on a Button or ImageButton
...ackground.
If you are looking for something similar in xml there is:
android:background attribute which works the same way.
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How do I stop Entity Framework from trying to save/insert child objects?
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@mirind4 I did not use state. If I insert an object, I make sure all childs are null. On update I get the object first without the childs.
– Thomas Klammer
May 14 '18 at 14:13
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How to become an OpenCart guru? [closed]
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OpenCart 1.5.X developer quick start guide for beginners
This guide is written for developers already familiar with PHP, OOP and the MVC architecture
In the following, you'll see examples for the catalog side of the cart. The admin side is identical in function ...
how to use ng-option to set default value of select element
... modifications and then persist the changes.
<select ng-options="opt.id as opt.name for opt in users" ng-model="selectedUser"></select>
Check the example here:
http://plnkr.co/edit/HrT5vUMJOtP9esGngbIV
sha...
How can I use UUIDs in SQLAlchemy?
Is there a way to define a column (primary key) as a UUID in SQLAlchemy if using PostgreSQL (Postgres)?
9 Answers
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WebView and HTML5
... our websites... Pretty simple with the WebViewClient . until I hit the video.
13 Answers
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