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How to concatenate strings of a string field in a PostgreSQL 'group by' query?
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How do you test that a Python function throws an exception?
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13 Answers
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How do I find the next commit in git? (child/children of ref)
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Rails migration: t.references with alternative name?
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168
You can do this all in the initial migration/column definition (at least currently in Rails 5)...
What is the type of lambda when deduced with “auto” in C++11?
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The type of a lambda expression is unspecified.
But they are generally mere syntactic sugar ...
MySQL join with where clause
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291
You need to put it in the join clause, not the where:
SELECT *
FROM categories
LEFT JOIN user_c...
PostgreSQL function for last inserted ID
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Append TimeStamp to a File Name
...following custom format specifiers y (year), M (month), d
(day), h (hour 12), H (hour 24), m (minute), s (second), f (second
fraction), F (second fraction, trailing zeroes are trimmed), t (P.M or
A.M) and z (time zone).
With Extension Method
Usage:
string result = "myfile.txt".AppendTimeS...
Best practices for circular shift (rotate) operations in C++
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