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Find rows that have the same value on a column in MySQL
...SELECT email,
count(*) AS c
FROM TABLE
GROUP BY email
HAVING c > 1
ORDER BY c DESC
If you want the full rows:
select * from table where email in (
select email from table
group by email having count(*) > 1
)
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Remove an entire column from a data.frame in R
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421
You can set it to NULL.
> Data$genome <- NULL
> head(Data)
chr region
1 chr1 CDS...
Changing the color of the axis, ticks and labels for a plot in matplotlib
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167
As a quick example (using a slightly cleaner method than the potentially duplicate question):
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Numpy matrix to array
I am using numpy. I have a matrix with 1 column and N rows and I want to get an array from with N elements.
9 Answers
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Generate sql insert script from excel worksheet
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13 Answers
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Hidden Features of JavaScript? [closed]
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votes
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What does the number in parentheses shown after Unix command names in manpages mean?
For example: man(1) , find(3) , updatedb(2) ?
7 Answers
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How do you make lettered lists using markdown?
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Andrew Mascillaro
3691212 bronze badges
answered Mar 15 '13 at 0:01
creativecodercreativecoder
1,19...
bash HISTSIZE vs. HISTFILESIZE?
...st: in memory.
Long answer:
All the info above + some examples:
Example 1:
HISTFILESIZE=10 and HISTSIZE=10
You start your session.
Your HISTFILE (file that stores your bash command history), is truncated to contain HISTFILESIZE=10 lines.
You write 50 lines.
At the end of your 50 commands, onl...
Make outer div be automatically the same height as its floating content
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169
You can set the outerdiv's CSS to this
#outerdiv {
overflow: hidden; /* make sure this do...