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SQL UPDATE all values in a field with appended string CONCAT not working
...a |
| 3 | sam |
| 4 | henry |
+------+-------+
4 rows in set (0.02 sec)
mysql> update t set data=concat(data, 'a');
Query OK, 4 rows affected (0.01 sec)
Rows matched: 4 Changed: 4 Warnings: 0
mysql> select * from t;
+------+--------+
| id | data |
+------+--------+
| 1 | max...
How can I eliminate slow resolving/loading of localhost/virtualhost (a 2-3 second lag) on Mac OS X L
...2), I have noticed that resolving to a virtual host is very slow (around 3 seconds) the first time but after that is fast as long as I continue loading it regularly.
...
How do I access call log for android?
...\nCall Date:--- " + callDayTime
+ " \nCall duration in sec :--- " + callDuration);
sb.append("\n----------------------------------");
}
managedCursor.close();
return sb.toString();
}
the output looks
...
Python - Create a list with initial capacity
...urn self
def __exit__(self, *args):
end = time.time()
secs = end - self.start
msecs = secs * 1000 # millisecs
print('%fms' % msecs)
Elements = 100000
Iterations = 144
print('Elements: %d, Iterations: %d' % (Elements, Iterations))
def doAppend():
result...
How do I achieve the theoretical maximum of 4 FLOPs per cycle?
....1,iterations);
sum[omp_get_thread_num()] = ret;
}
double secs = omp_get_wtime() - start;
uint64 ops = 48 * 1000 * iterations * tds * 2;
cout << "Seconds = " << secs << endl;
cout << "FP Ops = " << ops << endl;
cout << "FLOP...
Why am I getting a “401 Unauthorized” error in Maven?
... specified incorrectly. As mentioned already it should be the same as in section in settings.xml.
Couple of hints... Run mvn with -e -X options and check the debug output. It will tell you which repositoryId it is using:
[DEBUG] (f) offline = false
[DEBUG] (f) packaging = exe
[DEBUG] (f) po...
MySQL stored procedure vs function, which would I use when?
....e. compiled form.
(I'm not sure for this point.)
Stored procedure has the security and reduces the network
traffic and also we can call stored procedure in any no. of
applications at a time. reference
Functions are normally used for computations where as
procedures are normally used for executin...
How to kill a child process after a given timeout in Bash?
...AQ entry #68: "How do I run a command, and have it abort (timeout) after N seconds?")
If you don't mind downloading something, use timeout (sudo apt-get install timeout) and use it like: (most Systems have it already installed otherwise use sudo apt-get install coreutils)
timeout 10 ping www.goooo...
How to log cron jobs?
... @Danijel serverfault.com/a/117365/193377 0 0 * * * /some/path/to/a/file.php > $HOME/date +\%Y\%m\%d\%H\%M\%S-cron.log 2>&1
– AnneTheAgile
Oct 11 '17 at 22:11
...
How do I measure request and response times at once using cURL?
...ll focus just on the timing details that are provided. Times below are in seconds.
Create a new file, curl-format.txt, and paste in:
time_namelookup: %{time_namelookup}s\n
time_connect: %{time_connect}s\n
time_appconnect: %{time_appconnect}s\n
time_pretransfer: %{time_pretra...