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Check if table exists in SQL Server
...always best to use an INFORMATION_SCHEMA view. These views are (mostly) standard across many different databases and rarely change from version to version.
To check if a table exists use:
IF (EXISTS (SELECT *
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = ...
How to SSH to a VirtualBox guest externally through a host? [closed]
... one interface already which is using NAT. Then go to the Network settings and click the Port Forwarding button. Add a new Rule. As the rule name, insert "ssh". As "Host port", insert 3022. As "Guest port", insert 22. Everything else of the rule can be left blank.
or from the command line
VBoxMan...
How to read multiple text files into a single RDD?
I want to read a bunch of text files from a hdfs location and perform mapping on it in an iteration using spark.
10 Answers...
C# declare empty string array
I need to declare an empty string array and i'm using this code
9 Answers
9
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What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
I just want to understand following line of code in shell. It is used to get the current working directory. I am aware that $(variable) name return the value inside the variable name, but what is $(command) supposed to return? Does it return the value after executing the command? In that case, w...
How to force garbage collection in Java?
...ollection in Java, even if it is tricky to do? I know about System.gc(); and Runtime.gc(); but they only suggest to do GC. How can I force GC?
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What are “res” and “req” parameters in Express functions?
...mine what kind of browser made the request, what sort of responses it can handle, whether or not it's able to understand HTTP compression, etc.
An array of query string parameters if there were any, in request.query (e.g. /people.json?foo=bar would result in request.query.foo containing the string "...
OS detecting makefile
I routinely work on several different computers and several different operating systems, which are Mac OS X, Linux, or Solaris. For the project I'm working on, I pull my code from a remote git repository.
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How do I mock an autowired @Value field in Spring with Mockito?
I'm using Spring 3.1.4.RELEASE and Mockito 1.9.5. In my Spring class I have:
7 Answers
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C: Run a System Command and Get Output? [duplicate]
I want to run a command in linux and get the text returned of what it outputs, but I do not want this text printed to screen. Is there a more elegant way than making a temporary file?
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