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Do I need to create indexes on foreign keys on Oracle?
...es), where updates and deletes on the parent table are never done directly by the application. However, if adding an index on the column gives benefits to important queries in the application, then the index will still be a good idea.
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android:drawableLeft margin and/or padding
...ht to force the text and drawable inward towards the center of the button. By adjusting the left and right padding separately you can make very detailed adjustments to the layout.
Here's an example button that uses padding to push the text and icon closer together than they would be by default:
&l...
How do I iterate over a JSON structure? [duplicate]
...vaScript, so the answer is suitable in my book.
– Kirby L. Wallace
Jul 3 '17 at 19:44
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Performing Inserts and Updates with Dapper
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@ThomasLevesque What do you mean by that? Can you provide a tiny code example of what you mean?
– iaacp
Jun 7 '13 at 15:48
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android edittext onchange listener
... setContentView(R.layout.main);
yourEditText = (EditText) findViewById(R.id.yourEditTextId);
yourEditText.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
// you can call or do what you want with your EditText here
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On a CSS hover event, can I change another div's styling? [duplicate]
... can simply use #a:hover #b.
ALTERNATIVE: You can use pure CSS to do this by positioning the second element before the first. The first div is first in markup, but positioned to the right or below the second. It will work as if it were a previous sibling.
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Adding an identity to an existing column
... If you don't have much data, then "creating the table" can be achieved by generation a script from SSMS. Right click the table > Scrip Table as > Create TABLE to > (new query editor?). Then drop it, and inside that script you can add the IDENTITY(1, 1) part with the primary key column
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Can you nest html forms?
...efox, Opera, Egde, Safari, Android browser...) except IE (including latest by now v11).
– dmikam
Jul 27 '18 at 10:57
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How does one remove an image in Docker?
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Update, as commented by VonC in How to remove old Docker containers.
With Docker 1.13 (Q4 2016), you now have:
docker system prune will delete ALL unused data (i.e., in order: containers stopped, volumes without containers and images with no co...
How to select rows that have current day's timestamp?
...RE DATE(timestamp) = CURDATE() --- using DATE(timestamp)
ORDER BY timestamp ;
Explain:
ID SELECT_TYPE TABLE TYPE POSSIBLE_KEYS KEY KEY_LEN REF
1 SIMPLE test ALL
ROWS FILTERED EXTRA
6671 100 Using where; Using filesort
It filters all (6671) rows and then d...