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SQL keys, MUL vs PRI vs UNI
... non-unique index, then why does MUL show against only that column and not all other columns as well.?
– Vikas Goel
Jun 15 '19 at 23:23
2
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Dialog throwing "Unable to add window — token null is not for an application” with getApplication()
...reat! Just to comment on that.. you may sometimes need to store "this" globally, (for example) in order to access it within a listener's implemented method who has it's own 'this'. In that case, you'd define "Context context" globally, and then in the onCreate, set "context = this", and then refer t...
Why can I change value of a constant in javascript
...se I thought that idea of the constant is that it can not be changed. Basically a programmer has trust that no matter what will happen, nothing can change the value inside of my constant.
– Salvador Dali
May 2 '14 at 20:39
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What is the difference between :focus and :active?
...ng to give focus to the Add Comment button to the right by clicking on it. All of this without keyboard input causing focus.
– Joel Mellon
Jul 24 '14 at 21:24
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What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?
...know Scope_Identity() , Identity() , @@Identity , and Ident_Current() all get the value of the identity column, but I would love to know the difference.
...
Programmer-friendly search engine? [closed]
...ires sign-up), through which you can use Yahoo's web search. If you escape all relevant characters as described in the FAQ, you can search for arbitrary verbatim strings.
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What are some good resources for learning about Artificial Neural Networks? [closed]
I'm really interested in Artificial Neural Networks, but I'm looking for a place to start.
16 Answers
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Can not deserialize instance of java.util.ArrayList out of START_OBJECT token
...cannot, by default, be deserialized into a Collection because it's not actually a JSON Array - that would look like this:
[
{
"name": "Test order1",
"detail": "ahk ks"
},
{
"name": "Test order2",
"detail": "Fisteku"
}
]
Since you're not controlling...
How to detect which one of the defined font was used in a web page?
...
I've seen it done in a kind of iffy, but pretty reliable way. Basically, an element is set to use a specific font and a string is set to that element. If the font set for the element does not exist, it takes the font of the parent element. So, what they do is measure the width of the rende...
Oracle “Partition By” Keyword
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+--------------+---------------+
2) The boss says "Now get me a list of all items, with their brand AND number of items that the respective brand has"
You may try:
SELECT
ITEM_NR
,BRAND
,COUNT(ITEM_ID)
FROM
ITEMS
GROUP BY
BRAND;
But you get:
ORA-00979: no...