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Replace duplicate spaces with a single space in T-SQL
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If you want to remove the spaces at the front and end of the string, then wrap the replace in an LTRIM, RTRIM and it will do it for you.
– Neil Knight
Mar 16 '10 at 15:54
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Redis: Show database size/size for keys
My redis instance seems to being growing very large and I'd like to find out which of the multiple databases I have in there consumes how much memory. Redis' INFO command just shows me the total size and the number of keys per database which doesn't give me much insight... So any tools/ideas that ...
How do I find if a string starts with another string in Ruby?
...ingly, Rails defines the grammaticaly correct starts_with?, which in 1.8.7 and above is just aliased to start_with?.
– Mark Thomas
Nov 13 '10 at 14:57
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MySQL DISTINCT on a GROUP_CONCAT()
...n a string like:
test1 test2 test3 test1 test3 test4
(notice that test1 and test3 are duplicated) while the OP wants to return this string:
test1 test2 test3 test4
the problem here is that the string "test1 test3" is duplicated and is inserted only once, but all of the others are distinct to e...
Package doesn't exist error in intelliJ
...elliJ through project structure add library. Then I imported the packages and wrote the methods, which gave me no error. The packages were available in the class.
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Why does MYSQL higher LIMIT offset slow the query down?
...down, since the query needs to count off the first OFFSET + LIMIT records (and take only LIMIT of them). The higher is this value, the longer the query runs.
The query cannot go right to OFFSET because, first, the records can be of different length, and, second, there can be gaps from deleted recor...
ContractFilter mismatch at the EndpointDispatcher exception
...ssage.
This can be because:
You have different contracts between client and sender.
You're using a different binding between client and sender.
The message security settings are not consistent between client and sender.
Have at look at the EndpointDispatcher class for more information on the su...
Read a variable in bash with a default value
... cases below, word is subject to tilde expansion, parameter expansion, command substitution, and arithmetic expansion.
So if you use webpath=${webpath:-~/httpdocs} you will get a result of /home/user/expanded/path/httpdocs not ~/httpdocs, etc.
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Custom HTTP Authorization Header
...custom data in an HTTP authorization header. We're designing a RESTful API and we may need a way to specify a custom method of authorization. As an example, let's call it FIRE-TOKEN authentication.
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Is it possible to include a file in your .gitconfig
...th = /path/to/file
See here for a detailed description of the git change and its edge cases.
By the way, a couple of subtleties worth pointing out:
Environment-variable expansion, e.g. $HOME, is not supported. (Expansion of ~ appeared in Git 1.7.10.2.)
If a relative path is specified, then it i...