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How to Store Historical Data
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We are using the same aproach.But now I am wondering is it better to store only START_DATETIME and don't store END_DATETIME
– bat_ventzi
May 27 '15 at 7:40
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Is there a valid reason for enforcing a maximum width of 80 characters in a code file, this day and
...rminals or on 80-column printouts. Those requirement have mostly gone away now, but there are still valid reasons to keep the 80 column rule:
To avoid wrapping when copying code into email, web pages, and books.
To view multiple source windows side-by-side or using a side-by-side diff viewer.
To i...
Remove an item from a dictionary when its key is unknown
... remove an item from a dictionary by value, i.e. when the item's key is unknown? Here's a simple approach:
10 Answers
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jQuery if checkbox is checked
...:checked')) {
// Do something...
alert('You can rock now...');
};
});
});
</script>
share
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follow
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How to select the last record of a table in SQL?
...ut, I'm not 100% sure about this.
EDIT
Looking at the other answers, I'm now 100% confident that I'm correct with the MySQL statement :o)
EDIT
Just seen your latest comment. You could do:
SELECT MAX(Id)
FROM table
This will get you the highest Id number.
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Putting a simple if-then-else statement on one line [duplicate]
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Better Example: (thanks Mr. Burns)
'Yes' if fruit == 'Apple' else 'No'
Now with assignment and contrast with if syntax
fruit = 'Apple'
isApple = True if fruit == 'Apple' else False
vs
fruit = 'Apple'
isApple = False
if fruit == 'Apple' : isApple = True
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How to import multiple .csv files at once?
...mp<-list.files(pattern="*.csv") ddives <- lapply(temp, read.csv) So now each file is called ddives[n] but how would I go about writing a loop to make them all data frames rather than single objects? I can achieve this individually using the data.frame operator but am unsure as to how to loop ...
How can I show dots (“…”) in a span with hidden overflow?
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span {
display: inline-block;
width: 180px;
white-space: nowrap;
overflow: hidden !important;
text-overflow: ellipsis;
}
<span>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever s...
What's the opposite of chr() in Ruby?
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Now that Ruby 1.9 has changed the meaning of 'A'[0], this is the more portable method.
– AShelly
Nov 22 '08 at 1:11
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How to verify if a file exists in a batch file?
...file does or does not exist:
if exist C:\myprogram\sync\data.handler echo Now Exiting && Exit
if not exist C:\myprogram\html\data.sql Exit
We will take those three files and put it in a temporary place. After deleting the folder, it will restore those three files.
xcopy "test" "C:\temp"
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