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Unix command to find lines common in two files
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How to make type=“number” to positive numbers only
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17 Answers
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Update multiple rows in same query using PostgreSQL
...izable:
update test as t set
column_a = c.column_a
from (values
('123', 1),
('345', 2)
) as c(column_b, column_a)
where c.column_b = t.column_b;
You can add as many columns as you like:
update test as t set
column_a = c.column_a,
column_c = c.column_c
from (values
('12...
How do you write tests for the argparse portion of a python module? [closed]
... main function you should just call it with:
parser = parse_args(sys.argv[1:])
(where the first element of sys.argv that represents the script name is removed to not send it as an additional switch during CLI operation.)
In your tests, you can then call the parser function with whatever list of ...
Difference between CTE and SubQuery?
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103
In the sub-query vs simple (non-recursive) CTE versions, they are probably very similar. You w...
Get number days in a specified month using JavaScript? [duplicate]
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// Month here is 1-indexed (January is 1, February is 2, etc). This is
// because we're using 0 as the day so that it returns the last day
// of the last month, so you have to add 1 to the month number
// so it returns the correct amount of ...
Why does 'continue' behave like 'break' in a Foreach-Object?
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165
Simply use the return instead of the continue. This return returns from the script block which...
MySQL: Fastest way to count number of rows
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12 Answers
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How to parse a CSV file using PHP [duplicate]
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201
Just use the function for parsing a CSV file
http://php.net/manual/en/function.fgetcsv.php
$ro...
What is the difference between procedural programming and functional programming? [closed]
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17 Answers
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