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Max return value if empty query
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I know this is an old question and the accepted answer works, but this question answered my question about whether such an empty set would result in an exception or a default(int) result.
The accepted answer however, while it does work, isn't the ideal so...
Mongoimport of json file
...fileName.json --jsonArray -u ser -p password
– Diego Andrés Díaz Espinoza
Jul 11 '19 at 16:37
Adding to @DiegoAndré...
Case in Select Statement
I have an SQL statement that has a CASE from SELECT and I just can't get it right. Can you guys show me an example of CASE where the cases are the conditions and the results are from the cases. For example:
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Bidirectional 1 to 1 Dictionary in C#
...neToOne<T, S> which is guaranteed to only contain one of each value and key (up to RefEquals anyway), and which can be searched using either key or value. Anyone know of one, or should I just implement it myself? I can't believe that I'm the first person to need this...
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LINQ OrderBy versus ThenBy
.....) allows you to build a single composite comparison for any two objects, and then sort the sequence once using that composite comparison. That's almost certainly what you want.
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open_basedir restriction in effect. File(/) is not within the allowed path(s):
...ng this error on an avatar upload on my site. I've never gotten it before and nothing was changed recently for me to begin getting this error...
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Get current batchfile directory
Firstly, I saw this topic but I couldn't understand that.
4 Answers
4
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Convert xlsx to csv in Linux with command line
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The Gnumeric spreadsheet application comes with a command line utility called ssconvert that can convert between a variety of spreadsheet formats:
$ ssconvert Book1.xlsx newfile.csv
Using exporter Gnumeric_stf:stf_csv
$ cat newfile.csv
Foo,Bar,Baz
1,2,3
123.6,7.89,
2012/05/14...
How do you create a random string that's suitable for a session ID in PostgreSQL?
I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this?
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How to create a new object instance from a Type
...l.
There are a lot of overloads for passing parameters to the constructor and such. Check out the documentation at:
http://msdn.microsoft.com/en-us/library/system.activator.createinstance.aspx
or (new path)
https://docs.microsoft.com/en-us/dotnet/api/system.activator.createinstance
Her...