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How do I automatically update a timestamp in PostgreSQL
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203
To populate the column during insert, use a DEFAULT value:
CREATE TABLE users (
id serial not...
How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails
...eir queries directly. It is private API so there is a huge risk that Rails 3 will totally break it, but for debugging, it is an ok solution.
The method is construct_finder_sql(options) (lib/active_record/base.rb:1681) you will have to use send because it is private.
Edit: construct_finder_sql was...
Escaping regex string
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336
Use the re.escape() function for this:
4.2.3 re Module Contents
escape(string)
Retur...
EF LINQ include multiple and nested entities
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236
Have you tried just adding another Include:
Course course = db.Courses
.Includ...
Browser support for URLs beginning with double slash
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edited Feb 26 '19 at 1:35
user3261338
answered Mar 9 '12 at 10:18
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Getting one value from a tuple
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Georgy
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answered Jun 28 '10 at 20:56
David ZDavid Z
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Get last n lines of a file, similar to tail
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33 Answers
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MySQL get the date n days ago as a timestamp
In MySQL, how would I get a timestamp from, say 30 days ago?
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How can I decompress a gzip stream with zlib?
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How do I view the list of functions a Linux shared library is exporting?
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320
What you need is nm and its -D option:
$ nm -D /usr/lib/libopenal.so.1
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00012ea0 T alcSe...