大约有 47,000 项符合查询结果（耗时：0.0765秒） [XML]
MYSQL OR vs IN performance
...eir "opinion", science is all about testing and evidence.
I ran a loop of 1000x the equivalent queries (for consistency, I used sql_no_cache):
IN: 2.34969592094s
OR: 5.83781504631s
Update:
(I don't have the source code for the original test, as it was 6 years ago, though it returns a result in t...
Implement paging (skip / take) functionality with this query
... MUST there must be ORDER BY statement
-- the paging comes here
OFFSET 10 ROWS -- skip 10 rows
FETCH NEXT 10 ROWS ONLY; -- take 10 rows
If we want to skip ORDER BY we can use
SELECT col1, col2, ...
...
ORDER BY CURRENT_TIMESTAMP
OFFSET 10 ROWS -- skip 10 rows
FETCH NEXT 10 ...
How to retrieve GET parameters from javascript? [duplicate]
...
answered Mar 27 '11 at 10:17
BakudanBakudan
17k99 gold badges4545 silver badges6969 bronze badges
...
How to disable code formatting for some part of the code using comments?
...
answered Oct 21 '13 at 10:41
Carlos FonsecaCarlos Fonseca
5,99111 gold badge1414 silver badges1313 bronze badges
...
Variable declaration placement in C
...no extensions needed.
– AnT
Apr 16 '10 at 23:16
7
@AndreyT: Yeah, in C, variable declarations sho...
Why do we usually use || over |? What is the difference?
... & check both the sides everytime.
For example:
int i = 12;
if (i == 10 & i < 9) // It will check if i == 10 and if i < 9
...
Rewrite it:
int i = 12;
if (i == 10 && i < 9) // It will check if i == 10 and stop checking afterward because i != 10
...
Another example:
in...
How to exclude a directory in find . command
...
answered Nov 17 '10 at 23:00
f10bitf10bit
13.5k22 gold badges2222 silver badges2020 bronze badges
...
Which is the first integer that an IEEE 754 float is incapable of representing exactly?
...
answered Sep 25 '10 at 13:14
kennytmkennytm
451k9292 gold badges980980 silver badges958958 bronze badges
...
How to stop Eclipse formatter from placing all enums on one line
...ution.
– LegendLength
Jun 28 '17 at 10:17
add a comment
|
...
Stash changes while keeping the changes in the working directory in Git
...
|
edited Jul 10 at 17:46
Cirelli94
9021010 silver badges1818 bronze badges
answered Jul 25 ...