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Get table column names in MySQL?
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How about this:
SELECT @cCommand := GROUP_CONCAT( COLUMN_NAME ORDER BY column_name SEPARATOR ',\n')
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = 'my_database' AND TABLE_NAME = 'my_table';
SET @cCommand = CONCAT( 'SELECT ', @cCommand, ' from my_database.my_table;');
PREPARE xCo...
Can you explain the concept of streams?
...load, but tomorrow you want to send out boxes of six in response to custom orders. This kind of change can be accommodated by replacing or reconfiguring the machines at the start and end of the production line; the cherry machine in the middle of the line doesn't have to be changed to process a diff...
How can I use Async with ForEach?
...better solution? If simultaneously, should the results be in original item order or in order of completion? Should it fail on the first failure or wait until all have completed? Etc.
– Stephen Cleary
Oct 17 '19 at 18:01
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mongo group query how to keep fields
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Thanks! Got it better (avoid messing the order with a Set) : data : {$addToSet: {name: '$name', _id: '$_id', age: '$age' } }
– Benoit
Jun 19 '19 at 22:59
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Format SQL in SQL Server Management Studio
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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How to save all the variables in the current python session?
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If you use shelve, you do not have to remember the order in which the objects are pickled, since shelve gives you a dictionary-like object:
To shelve your work:
import shelve
T='Hiya'
val=[1,2,3]
filename='/tmp/shelve.out'
my_shelf = shelve.open(filename,'n') # 'n' for ne...
How would you implement an LRU cache in Java?
...s not a LRU cache. This is because re-putting an entry does not affect the order of the entries (a real LRU cache will place the last-inserted entry at the back of the iteration order regardless of whether that entry initially exists in the cache)
– Pacerier
Fe...
How to get access to HTTP header information in Spring MVC REST controller?
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How to apply two CSS classes to a single element
...16px;
color:#000000;
text-align:center;
}
<div class="box color">orderlist</div>
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Unicode, UTF, ASCII, ANSI format differences
... many consumer applications will need to be aware of non-BMP characters in order to support emojis.
UTF-8: Variable length encoding, 1-4 bytes per code point. ASCII values are encoded as ASCII using 1 byte.
UTF-7: Usually used for mail encoding. Chances are if you think you need it and you're not do...