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Check if a Postgres JSON array contains a string
...as food
d(# where food::text = '"carrots"'
d(# );
Execution time: 3084.927 ms
d=# -- Postgres 9.4+ solution
d=# explain analyze select info->'name' from rabbits where (info->'food')::jsonb ? 'carrots';
Execution time: 1255.501 ms
d=# alter table rabbits alter info type jsonb using info::...
How do I get the first n characters of a string without checking the size or going out of bounds?
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Stephen CStephen C
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How to create a temporary directory/folder in Java?
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edited Sep 28 '18 at 20:58
GreenGiant
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How do I replace the *first instance* of a string in .NET?
...DIT: As @itsmatt mentioned, there's also Regex.Replace(String, String, Int32), which can do the same, but is probably more expensive at runtime, since it's utilizing a full featured parser where my method does one find and three string concatenations.
EDIT2: If this is a common task, you might want...
How can I strip first X characters from string using sed?
...ux in a small industrial box. I have a variable containing the text pid: 1234 and I want to strip first X characters from the line, so only 1234 stays. I have more variables I need to "clean", so I need to cut away X first characters and ${string:5} doesn't work for some reason in my system.
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Properly escape a double quote in CSV
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Use 2 quotes:
"Samsung U600 24"""
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ng-app vs. data-ng-app, what is the difference?
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edited Feb 2 '16 at 18:24
tgf
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answered May 16 '...
Git resolve conflict using --ours/--theirs for all files
...h is the usual one.
This method should work through at least Git versions 2.4.x
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How to set limits for axes in ggplot2 R plots?
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Internal Error 500 Apache, but nothing in the logs?
...e default error log is often in /var/log/httpd/error_log or /var/log/apache2/error.log.
The reason you look at the default error logs (as indicated above) is because errors don't always get posted into the custom error log as defined in the virtual host.
Assumes linux and not necessarily perl
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