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Do I need to create indexes on foreign keys on Oracle?
...ance of an index may be unacceptable.
Most salient here would seem to be selectivity: if the values in the index would be highly duplicated then it may give better performance to drop the index (if possible) and allow a table scan.
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How to allow only one radio button to be checked?
... set "groups" of radio buttons, only one radio button in each group can be selected at one time and selecting other will clear the previous selection. :)
– Shadow Wizard is Ear For You
Mar 24 '11 at 13:02
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In Vim is there a way to delete without putting text in the register?
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Any ideas on doing this selectively on only empty lines? (If I dd on an empty line it goes into the blackhole, otherwise it dds like normal).
– Jonathan Dumaine
Mar 5 '13 at 23:28
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IntelliJ IDEA generating serialVersionUID
... like this:
private static final long serialVersionUID = 1L;
$END$
Then select definition scope and save it as 'serial'
Now you can type serialTAB in class body.
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How to do what head, tail, more, less, sed do in Powershell? [closed]
...option for reading a text file. You can then filter further:
gc log.txt | select -first 10 # head
gc -TotalCount 10 log.txt # also head
gc log.txt | select -last 10 # tail
gc -Tail 10 log.txt # also tail (since PSv3), also much faster than above option
gc log.txt | more #...
How to change package name of Android Project in Eclipse?
...can rename or change the package name, and also by right-clicking and then select Rename option, you can change or rename the package name.
When you press F2, it will show you the dialog box as:
In this dialog, don't forget to check the "Update references" checkbox because by making "check" to t...
Android RatingBar change star colors [closed]
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This should be the selected correct answer.
– Hampel Előd
Nov 29 '17 at 14:59
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Can Eclipse refresh resources automatically?
...n the project node in the Project Explorer and press F5 or right click and select Refresh, all resources for that project will be refreshed. Also, if you CTRL+click on multiple projects, you should be able to refresh multiple projects at the same time.
A single click on a project, a CTRL+A to selec...
Is there a ternary conditional operator in T-SQL?
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Use case:
select *
from table
where isExternal = case @type when 2 then 1 else 0 end
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iPhone get SSID without private library
...ected to NSDictionary *networkDict = [self fetchSSIDInfo]; // Select the SSID from the network information NSString *iPhoneNetworkSSID = [networkDict objectForKey:@"SSID"];
– Groot
Dec 17 '12 at 13:13
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