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Finding duplicate values in MySQL
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Very good. I added ORDER BY varchar_column DESC to the end of query.
– trante
May 28 '14 at 20:25
8
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String vs. StringBuilder
...uff" + var1 + " more stuff"
+ var2 + " other stuff" .... etc... etc...;
is more performant than
StringBuilder sb = new StringBuilder();
sb.Append("Some Stuff");
sb.Append(var1);
sb.Append(" more stuff");
sb.Append(var2);
sb.Append("other stuff");
// etc.. etc.. etc..
In this c...
psql invalid command \N while restore sql
.... I suggest:
inserting a single, small table (e.g., pg_restore
--table=orders full_database.dump > orders.dump )
if you don't have a small one, then delete a bunch of records out of the restore script - I just made sure the ./ was the last row to be loaded (e.g., open orders.dump and delete...
How to access route, post, get etc. parameters in Zend Framework 2
...me', 'default');
NOTE: You could have used the superglobals $_GET, $_POST etc., but that is discouraged.
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Is there ever a time where using a database 1:1 relationship makes sense?
...e one table that contains only the file's meta data (file name, mime type, etc) and another table, mapped 1:1, that contains the actual blob data. This would reduce overhead in querying/sorting the files in some instances.
– Kevin Peno
Oct 30 '09 at 22:53
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Microsoft Excel mangles Diacritics in .csv files?
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A correctly formatted UTF8 file can have a Byte Order Mark as its first three octets. These are the hex values 0xEF, 0xBB, 0xBF. These octets serve to mark the file as UTF8 (since they are not relevant as "byte order" information).1 If this BOM does not exist, the consu...
How would I get a cron job to run every 30 minutes?
... "run when the minute of each hour is 30" (would run at: 1:30, 2:30, 3:30, etc)
example #2
*/30 * * * * your_command
this means "run when the minute of each hour is evenly divisible by 30" (would run at: 1:30, 2:00, 2:30, 3:00, etc)
example #3
0,30 * * * * your_command
this means "run when the...
How to install Java SDK on CentOS?
... After Installation: configuring iptables on centos 6.5 -> /etc/sysconfig/iptables -> -A INPUT -i eth0 -p tcp -m tcp --dport 8080 -m state --state NEW,ESTABLISHED -j ACCEPT
– hpaknia
Jan 18 '15 at 11:17
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What does “rc” mean in dot files
...nix: from runcom files on the CTSS system 1962-63, via the startup script /etc/rc]
Script file containing startup instructions for an application program (or an entire operating system), usually a text file containing commands of the sort that might have been invoked manually once the system was run...
What algorithm does Readability use for extracting text from URLs?
... This is the mostly prominent type of text in navigational elements (menus etc.)
If an author wants you to deeply understand what he/she means, he/she uses many words. This way, ambiguity is removed at the cost of an increase in redundancy. Article-like content usually falls into this class as it h...