大约有 6,885 项符合查询结果（耗时：0.0296秒） [XML]
FIND_IN_SET() vs IN()
...CompanyIDs | '}')::INT[])
WHERE orderID = 1
and this would even use an index on companyID.
Unfortunately, this does not work in MySQL since the latter does not support arrays.
You may find this article interesting (see #2):
10 things in MySQL (that won’t work as expected)
Update:
If the...
Hide/Show Column in an HTML Table
... get cell location - https://stackoverflow.com/a/4999018/1366033
var cellIndex = $cell[0].cellIndex + 1;
$table.find(".show-column-footer").show()
$table.find("tbody tr, thead tr")
.children(":nth-child("+cellIndex+")")
.hide()
})
$(".show-column-footer").click(function(e) {
...
Calendar returns wrong month [duplicate]
...
Months are indexed from 0 not 1 so 10 is November and 11 will be December.
share
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follo...
How does a hash table work?
...ut the total memory usage is no worse - just more pointers NULL instead of indexing into the data usefully.
– Tony Delroy
Aug 31 '17 at 4:11
3
...
What is PostgreSQL explain telling me exactly?
...e dataset, that operation is done to that data set. (For instance scan an index to figure out what rows you want, filter a dataset, or sort it.) If two, the two datasets are the two things that are indented further, and they are joined by the rule you see. The meaning of most of the rules can be re...
Is there a performance difference between a for loop and a for-each loop?
...of the clutter
and the opportunity for error by
hiding the iterator or index variable
completely. The resulting idiom
applies equally to collections and
arrays:
// The preferred idiom for iterating over collections and arrays
for (Element e : elements) {
doSomething(e);
}
When y...
How to compare arrays in JavaScript?
...de a little test tool for both of the functions.
Bonus: Nested arrays with indexOf and contains
Samy Bencherif has prepared useful functions for the case you're searching for a specific object in nested arrays, which are available here: https://jsfiddle.net/SamyBencherif/8352y6yw/
...
Drawing a dot on HTML5 canvas [duplicate]
...ne the value of a pixel //
function drawPixel (x, y, r, g, b, a) {
var index = (x + y * canvasWidth) * 4;
canvasData.data[index + 0] = r;
canvasData.data[index + 1] = g;
canvasData.data[index + 2] = b;
canvasData.data[index + 3] = a;
}
// That's how you update the canvas, so th...
How to read a text file reversely with iterator in C#
...eadExactly(Stream input, byte[] buffer, int bytesToRead)
{
int index = 0;
while (index < bytesToRead)
{
int read = input.Read(buffer, index, bytesToRead - index);
if (read == 0)
{
throw new EndOfStreamException
...
Stash just a single file
...st option is to stage everything but this file, and tell stash to keep the index with git stash save --keep-index, thus stashing your unstaged file:
$ git add .
$ git reset thefiletostash
$ git stash save --keep-index
As Dan points out, thefiletostash is the only one to be reset by the stash, but...