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Counting null and non-null values in a single query
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This works for Oracle and SQL Server (you might be able to get it to work on another RDBMS):
select sum(case when a is null then 1 else 0 end) count_nulls
, count(a) count_not_nulls
from us;
Or:
select count(*) - count(a), count(a) from us;
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How to change bower's default components folder?
I'm making a new project that uses bower from twitter. I created a component.json to maintain all my dependency like jquery. Then I run bower install that installs everything in a folder named components . But I need to install the components in a different folder, e.g. public/components .
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MySQL with Node.js
I've just started getting into Node.js. I come from a PHP background, so I'm fairly used to using MySQL for all my database needs.
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How to print third column to last column?
I'm trying to remove the first two columns (of which I'm not interested in) from a DbgView log file. I can't seem to find an example that prints from column 3 onwards until the end of the line. Note that each line has variable number of columns.
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How to activate an Anaconda environment
I'm on Windows 8, using Anaconda 1.7.5 64bit.
12 Answers
12
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Include constant in string without concatenating
Is there a way in PHP to include a constant in a string without concatenating?
12 Answers
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How do you diff a directory for only files of a specific type?
...*.bar' -x '*.baz' /destination/dir/1 /destination/dir/2
From the Comparing Directories section of info diff (on my system, I have to do info -f /usr/share/info/diff.info.gz):
To ignore some files while comparing directories, use the '-x
PATTERN' or '--exclude=PATTERN' option. This option ig...
POST request via RestTemplate in JSON
...oblem, so I want to ask you for help. I can't simply send POST request using RestTemplate object in JSON
14 Answers
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How do you search for files containing DOS line endings (CRLF) with grep on Linux?
I want to search for files containing DOS line endings with grep on Linux. Something like this:
9 Answers
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How to negate specific word in regex? [duplicate]
I know that I can negate group of chars as in [^bar] but I need a regular expression where negation applies to the specific word - so in my example how do I negate an actual bar , and not "any chars in bar"?
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