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ActiveRecord OR query
How do you do an OR query in Rails 3 ActiveRecord. All the examples I find just have AND queries.
14 Answers
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Adding elements to object
...led with last element only. e.g I have 4 different items, but in an object all 4 elements are = last value solution I found is create element = {}; inside of for, then its work properly
– Gorodeckij Dimitrij
Apr 29 at 21:54
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What are good alternatives to SQL (the language)? [closed]
I occasionally hear things about how SQL sucks and it's not a good language, but I never really hear much about alternatives to it. So, are other good languages that serve the same purpose (database access) and what makes them better than SQL? Are there any good databases that use this alternative l...
Comparing two files in linux terminal
There are two files called "a.txt" and "b.txt" both have a list of words. Now I want to check which words are extra in "a.txt" and are not in "b.txt" .
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Static Classes In Java
...ion by client code as it makes no sense to instantiate a static class
Make all the members and functions of the class static - Since the class cannot be instantiated no instance methods can be called or instance fields accessed
Note that the compiler will not prevent you from declaring an instance ...
Why is the clone() method protected in java.lang.Object?
...oneable is now largely regarded as a mistake (citation below). I would normally want to be able to make implementations of an interface Cloneable but not necessarily make the interface Cloneable (similar to the use of Serializable). This cannot be done without reflection:
ISomething i = ...
if (i i...
redirect COPY of stdout to log file from within bash script itself
...ll, not a child process, wait cannot be used to synchronize output to the calling process. What you want is an unbuffered version of tee similar to bogomips.org/rainbows.git/commit/…
– user246672
Feb 13 '12 at 15:15
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Accessing constructor of an anonymous class
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How would I be able to call a method in the superclass of Test from within println, when that method is overridden?
– Mark Jeronimus
Feb 25 '14 at 14:56
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How do I use ROW_NUMBER()?
...ases, despite their name, don't have a formal ordering, so if you want to call a row "1" or "10" or "1337", you need to order them first using an ORDER BY clause, which is the one that goes in the OVER (ORDER BY X) clause.
– Wtrmute
Sep 13 '17 at 0:25
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What is the error “Every derived table must have its own alias” in MySQL?
...hout their names (or aliases) so, you must give unique names (aliases) for all of your sub-queries to make dbms query engine make it's work properly."
– Bahadir Tasdemir
Apr 25 '16 at 7:33
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