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How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?
...sing the PostgreSQL database for my Ruby on Rails application (on Mac OS X 10.9).
15 Answers
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Quick unix command to display specific lines in the middle of a file?
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with GNU-grep you could just say
grep --context=10 ...
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Where does this come from: -*- coding: utf-8 -*-
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edited Feb 2 '11 at 10:20
answered Feb 2 '11 at 8:33
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How do I insert datetime value into a SQLite database?
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The format you need is:
'2007-01-01 10:00:00'
i.e. yyyy-MM-dd HH:mm:ss
If possible, however, use a parameterised query as this frees you from worrying about the formatting details.
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What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
...ing it.
– Eliran Malka
Jan 9 '17 at 10:29
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I understand that the backticks produce the same resu...
What does the “===” operator do in Ruby? [duplicate]
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answered Dec 17 '10 at 5:00
Jörg W MittagJörg W Mittag
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Why did my Git repo enter a detached HEAD state?
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answered Oct 19 '10 at 6:04
VonCVonC
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How to find patterns across multiple lines using grep?
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answered Apr 21 '10 at 21:29
ring bearerring bearer
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How to overload the operator++ in two different ways for postfix a++ and prefix ++a?
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answered Oct 2 '10 at 15:32
Martin YorkMartin York
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How do I get the key at a specific index from a Dictionary in Swift?
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