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Is it possible to GROUP BY multiple columns using MySQL?
...erence of left to right is applied to the ascending order of the groupings and not the column group preference. GROUP BY applies col1+col2. e.g. col1 = 1, 2, 1, 2 | col2 = 1, 2, 3, 2 and running GROUP BY col1,col2 would return 1,1|1,3|2,2 as opposed to 1,1|2,2 as suggested. Whereas GROUP BY col2, co...
I've found my software as cracked download on Internet, what to do?
...as between 20% and 70%. Even at the low end that's a significant amount of extra revenue.
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edited Aug 25 '10 at 16:57
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Maximum on http header values?
...ders size exceeds that limit.
Related question: How big can a user agent string get?
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Do I need to heartbeat to keep a TCP connection open?
...s that that communicate via TCP/IP. Component A acts as a server/listener and Component B is the client. The two should communicate as quickly as possible. There can only ever be one connection at any time (though that is aside to this question). A senior developer at my company has said I need ...
What are sessions? How do they work?
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@Gab是好人 REFERRER usually means an arbitrary string that the client sends in the "Referer" HTTP request header. It should contain the URL of the resource that, you know, referred the client to the current resource.
– Luke404
Aug 8 ...
PHP mail function doesn't complete sending of e-mail
...ed out.
Make sure the mail() function is called correctly
bool mail ( string $to , string $subject , string $message [, string $additional_headers [, string $additional_parameters ]] )
The mail function takes three required parameters and optionally a fourth and fifth one. If your call to mai...
Downloading MySQL dump from command line
...he contents of a MySQL database. Is there a way I can do this from the command line?
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performing HTTP requests with cURL (using PROXY)
...erver:port/
Then you can connect through proxy from (many) application.
And, as per comment below, for https:
export https_proxy=https://your.proxy.server:port/
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Search for all occurrences of a string in a mysql database [duplicate]
...-no-create-info --extended-insert=FALSE databasename | grep -i "<search string>"
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What is a “thread” (really)?
I have been trying to find a good definition, and get an understanding, of what a thread really is.
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