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How do I find duplicate values in a table in Oracle?
...est SQL statement that will return the duplicate values for a given column and the count of their occurrences in an Oracle database table?
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Google Sheets API Setup · App Inventor 2 中文网
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Note: If you are only going to read from the Google Sheets document, and not
edit or write data to the document, you can skip the process of making a Service
Account. The only requirement is that the Google Sheets document is shared such
that anyone with the link can read the document.
Create...
What is the difference between JOIN and UNION?
What is the difference between JOIN and UNION ? Can I have an example?
15 Answers
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Problems with Android Fragment back stack
I've got a massive problem with the way the android fragment backstack seems to work and would be most grateful for any help that is offered.
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What's the difference between Spring Data's MongoTemplate and MongoRepository?
...write an application with which I can do complex queries using spring-data and mongodb. I have been starting by using the MongoRepository but struggled with complex queries to find examples or to actually understand the Syntax.
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HTML5 input type range show range value
... lacking. True that providing fancy widgets is not the role of the basic standard, but showing the selected value is core to this widget, so I think that (optionally) showing the number in a basic form such as a tooltip on top of the slider handle would make for a better design.
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How to add a button to PreferenceScreen
Is there any way to add a button to the bottom of preferences screen and make them work correct when scrolling?
12 Answers
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LINQ: Distinct values
...g to be distinct by more than one field? If so, just use an anonymous type and the Distinct operator and it should be okay:
var query = doc.Elements("whatever")
.Select(element => new {
id = (int) element.Attribute("id"),
c...
Android and setting alpha for (image) view alpha
...n. The alternative is to use View.setAlpha(float) whose XML counterpart is android:alpha. It takes a range of 0.0 to 1.0 instead of 0 to 255. Use it e.g. like
<ImageView android:alpha="0.4">
However, the latter in available only since API level 11.
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How to start new activity on button click
In an Android application, how do you start a new activity (GUI) when a button in another activity is clicked, and how do you pass data between these two activities?
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