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Foreign key constraint may cause cycles or multiple cascade paths?
I have a problem when I try to add constraints to my tables. I get the error:
9 Answers
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When does a process get SIGABRT (signal 6)?
...sses inside pointer to itself.
the A ctor calls pure virtual method before table was filled with valid pointer,
because d is not constructed yet.
#include<iostream>
using namespace std;
class A {
public:
A(A *pa){pa->f();}
virtual void f()=0;
};
class D : public A {
public:
D():A(this)...
How do I create a SQL table under a different schema?
...
Right-click on the tables node and choose New Table...
With the table designer open, open the properties window (view -> Properties Window).
You can change the schema that the table will be made in by choosing a schema in the properties wind...
Storing images in SQL Server?
...pending on your use
If you decide to put your pictures into a SQL Server table, I would strongly recommend using a separate table for storing those pictures - do not store the employee photo in the employee table - keep them in a separate table. That way, the Employee table can stay lean and mean ...
When should you not use virtual destructors?
...mean every allocated object increases in memory cost by a virtual function table pointer.
So if your program involves allocating a very large number of some object, it would be worth avoiding all virtual functions in order to save the additional 32 bits per object.
In all other cases, you will sav...
CodeIgniter: Create new helper?
...t_instance();
$ci->load->database();
$sql = "select * from table";
$query = $ci->db->query($sql);
$row = $query->result();
}
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Angular.js ng-repeat across multiple tr's
...test through an html validator allowed multiple tbody elements in the same table.
Update: As of at least Angular 1.2 there is an ng-repeat-start and ng-repeat-end to allow repeating a series of elements. See the documentation for more information and thanks to @Onite for the comment!
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When to use UICollectionView instead of UITableView?
I found that UICollectionView is like an upgraded version of UITableView introduced in iOS6, but when should I choose UICollectionView instead of UITableView ?
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What algorithm does Readability use for extracting text from URLs?
...ere are cases where the "main content" is something else, e.g. an image, a table, a video etc. The algorithms won't work well for such cases.
Cheers,
Christian
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How to add row in JTable?
Do you know how I can add a new row to a jTable ?
5 Answers
5
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