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Oracle SQL: Update a table with data from another table
...c
FROM table2 t2
WHERE t1.id = t2.id)
WHERE EXISTS (
SELECT 1
FROM table2 t2
WHERE t1.id = t2.id )
Assuming the join results in a key-preserved view, you could also
UPDATE (SELECT t1.id,
t1.name name1,
...
JPA: unidirectional many-to-one and cascading delete
Say I have a unidirectional @ManyToOne relationship like the following:
7 Answers
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How to have conditional elements and keep DRY with Facebook React's JSX?
...at should be in the component if it has been passed in. What I want to avoid is having to duplicate HTML tags in the if statement.
...
How to create and handle composite primary key in JPA
...contains your two keys, and then have a reference to that class as EmbeddedId in your Entity.
You would need the @EmbeddedId and @Embeddable annotations.
@Entity
public class YourEntity {
@EmbeddedId
private MyKey myKey;
@Column(name = "ColumnA")
private String columnA;
/** Y...
WiX tricks and tips
...ion. For example, if a user sets custom install directory.
<Property Id="INSTALLLOCATION">
<RegistrySearch Id="RegistrySearch" Type="raw" Root="HKLM" Win64="$(var.Win64)"
Key="Software\Company\Product" Name="InstallLocation" />
</Property>
Note: WiX guru Rob...
How to select html nodes by ID with jquery when the id contains a dot?
...
@Tomalak in comments:
since ID selectors must be preceded by a hash #, there should be no ambiguity here
“#id.class” is a valid selector that requires both an id and a separate class to match; it's valid and not always totally redundant.
The corr...
Can you do greater than comparison on a date in a Rails 3 search?
...
Note.
where(:user_id => current_user.id, :notetype => p[:note_type]).
where("date > ?", p[:date]).
order('date ASC, created_at ASC')
or you can also convert everything into the SQL notation
Note.
where("user_id = ? AND notety...
MySQL, better to insert NULL or empty string?
...insert a NULL value or an empty string into the DB columns where the user didn't put any data?
6 Answers
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How to properly create composite primary keys - MYSQL
...le_1 and table_2 both have auto-increment surrogate primary keys as the ID. info is a table that contains information about both table_1 and table_2 .
...
ASP.NET MVC passing an ID in an ActionLink to the controller
I can't see to retrieve an ID I'm sending in a html.ActionLink in my controller, here is what I'm trying to do
5 Answers
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