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Retrieving the last record in each group - MySQL
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MySQL 8.0 now supports windowing functions, like almost all popular SQL implementations. With this standard syntax, we can write greatest-n-per-group queries:
WITH ranked_messages AS (
SELECT m.*, ROW_NUMBER() OVER (PARTITION BY name ORDER BY id DESC) AS rn
FROM mes...
Oracle Differences between NVL and Coalesce
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Jon Heller
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answered Jun 4 '09 at 12:03
QuassnoiQuassnoi
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What does cherry-picking a commit with Git mean?
Recently, I have been asked to cherry-pick a commit.
12 Answers
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How do I find duplicate values in a table in Oracle?
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Bill the LizardBill the Lizard
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Convert character to ASCII numeric value in java
...improves readability.
int ascii = character; // Even this will do the trick.
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Difference Between ViewResult() and ActionResult()
... edited Jan 10 '13 at 14:48
SeanKilleen
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answered Jan 20 '11 at 5:35
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Flatten List in LINQ
... edited Oct 30 '12 at 16:38
kalyfe
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answered Oct 19 '09 at 19:51
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Test if characters are in a string
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TMS
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answered Apr 12 '12 at 17:28
smusmu
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How to leave/exit/deactivate a Python virtualenv
...rtualenvwrapper. I can switch between virtualenv's just fine using the workon command.
13 Answers
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How do I prevent commands from showing up in Bash history?
Sometimes, when I run commands like rm -rf XYZ , I don't want this to be recorded in Bash history, because I might accidentally run the same command again by reverse-i-search . Is there a good way to prevent this from happening?
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