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Use tnsnames.ora in Oracle SQL Developer
... $TNS_ADMIN/tnsnames.ora
TNS_ADMIN lookup key in the registry
/etc/tnsnames.ora ( non-windows )
$ORACLE_HOME/network/admin/tnsnames.ora
LocalMachine\SOFTWARE\ORACLE\ORACLE_HOME_KEY
LocalMachine\SOFTWARE\ORACLE\ORACLE_HOME
If your tnsnames.ora file is not getting ...
Reason for Column is invalid in the select list because it is not contained in either an aggregate f
...f the grouping criteria, nor appear in aggregate functions (SUM, MIN, MAX, etc.).
Fixing it might look like this:
SELECT a, MAX(b) AS x
FROM T
GROUP BY a
Now it's clear that you want the following result:
a x
--------
1 ghi
2 pqr
...
Detecting design mode from a Control's constructor
... can also do it by checking process name:
if (System.Diagnostics.Process.GetCurrentProcess().ProcessName == "devenv")
return true;
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Android multiple email attachments using Intent
... Android program to send email with an attachment (image file, audio file, etc) using Intent with ACTION_SEND . The program is working when email has a single attachment. I used Intent.putExtra(android.content.Intent.EXTRA_STREAM, uri) to attach the designated image file to the mail and it is wor...
Git mergetool generates unwanted .orig files
...hough, if you like it you will probably absolutely love tools like p4Merge etc.
– Tim Jarvis
Jun 17 at 3:57
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How to show the text on a ImageButton?
... place the drawable at the top of the button, drawableRight at the bottom, etc.
– Cristian
Oct 25 '12 at 12:11
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Passing a 2D array to a C++ function
... TwoD>
void myFunction(TwoD& myArray){
myArray[x][y] = 5;
etc...
}
// call with
double anArray[10][10];
myFunction(anArray);
It works with any 2D "array-like" datastructure, such as std::vector<std::vector<T>>, or a user defined type to maximize code reuse.
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Sorting arraylist in alphabetical order (case insensitive)
...Somehow, the A10 goes after A1. Basically, it sorted like A1, A10, A2, A3, etc. Why did it happen and how can I sort list correctly?
– Dante
Oct 5 '14 at 16:39
2
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Using do block vs braces {}
...u are doing a small operation, for example, a method call or a comparison, etc. so this makes perfect sense:
some_collection.each { |element| puts element }
But if you have slightly complex logic that goes to multiple lines then use do .. end like:
1.upto(10) do |x|
add_some_num = x + rand(10)...
How to simulate the environment cron executes a script with?
...
note: if adding that to the global /etc/crontab, you'll need the username too. E.g. * * * * * root env > ~/cronenv
– Greg
Aug 20 '12 at 14:23
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