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How can I copy data from one column to another in the same table?
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495
How about this
UPDATE table SET columnB = columnA;
This will update every row.
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How to add a WiX custom action that happens only on uninstall (via MSI)?
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edited Nov 19 '19 at 7:52
nelsonjchen
20855 silver badges1313 bronze badges
answered Apr 8 '09 at 20:...
What is the difference between const int*, const int * const, and int const *?
... int
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And to make sure we are clear on the meaning of const:
int a = 5, b = 10, c = 15;
const int* foo; // pointer to constant int.
foo = &a; // assignment to where foo points to.
/* dummy statement*/
*foo = 6; // the value of a can´t get changed through the poin...
Why is Double.MIN_VALUE in not negative
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The IEEE 754 format has one bit reserved for the sign and the remaining bits representing the magnitude. This means that it is "symmetrical" around origo (as opposed to the Integer values, which have one more negative value). Thus the ...
How to prevent ifelse() from turning Date objects into numeric objects
...<- fifelse(dates == '2011-01-01', dates - 1, dates)
str(dates)
# Date[1:5], format: "2010-12-31" "2011-01-02" "2011-01-03" "2011-01-04" "2011-01-05"
dplyr::if_else
From dplyr 0.5.0 release notes:
[if_else] have stricter semantics that ifelse(): the true and false arguments must be the same typ...
Verify version of rabbitmq
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215
sudo rabbitmqctl status
and look for line that looks like that:
{rabbit,"RabbitMQ","2.6...
Android SDK on a 64-bit linux machine
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15 Answers
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Downloading images with node.js [closed]
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answered Oct 5 '12 at 18:01
Cezary WojtkowskiCezary Wojtkowski
4,67311 gold badge1313 silver badges66 bronze badges
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JavaScript implementation of Gzip [closed]
... var out = [];
var currChar;
var phrase = data[0];
var code = 256;
for (var i=1; i<data.length; i++) {
currChar=data[i];
if (dict[phrase + currChar] != null) {
phrase += currChar;
}
else {
out.push(phrase.length > 1 ? dict...
Return index of greatest value in an array
...et all these indexes?
– ed1nh0
Apr 15 '19 at 14:02
1
@ed1nh0: The easy way is to make multiple pa...