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MySQL load NULL values from CSV data
...ets the actual field value to NULL, if the local variable ends up containing an empty string:
LOAD DATA INFILE '/tmp/testdata.txt'
INTO TABLE moo
FIELDS TERMINATED BY ","
LINES TERMINATED BY "\n"
(one, two, three, @vfour, five)
SET four = NULLIF(@vfour,'')
;
If they're all possibly empty, then yo...
Python integer division yields float
Is this intended? I strongly remember earlier versions returning int/int=int ? What should I do, is there a new division operator or must I always cast?
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How to make the hardware beep sound in Mac OS X 10.6
...ware beep sound like in open suse and other distributions. I tried following approaches
16 Answers
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ReactJS render string with non-breaking spaces
I have some props that has a string that could contain characters such as &.
It also contains spaces. I want to replace all spaces with   .
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Why should I prefer single 'await Task.WhenAll' over multiple awaits?
In case I do not care about the order of task completion and just need them all to complete, should I still use await Task.WhenAll instead of multiple await ? e.g, is DoWork2 below a preferred method to DoWork1 (and why?):
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How to auto-reload files in Node.js?
... could implement an auto-reload of files in Node.js? I'm tired of restarting the server every time I change a file.
Apparently Node.js' require() function does not reload files if they already have been required, so I need to do something like this:
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What's the difference between console.dir and console.log?
In Chrome the console object defines two methods that seem to do the same thing:
9 Answers
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Removing Data From ElasticSearch
...ly remove the data itself. The other stuff I've seen points to the Delete by Query feature. However, I'm not even sure what to query on. I know my indexes. Essentially, I'd like to figure out how to do a
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How to tell where a header file is included from?
How can I tell where g++ was able to find an include file? Basically if I
4 Answers
4...
How do I create some kind of table of content in GitHub wiki?
...
It is nicely demonstrated in the Table of Contents of the Markdown Cheatsheet.
##### Table of Contents
[Headers](#headers)
[Emphasis](#emphasis)
...snip...
<a name="headers"/>
## Headers
If you hover over a Header in a GitHub Markdown file, ...