大约有 48,000 项符合查询结果（耗时：0.1176秒） [XML]
How to filter SQL results in a has-many-through relation
...b cluster used here to 9.1 soon. Maybe I'll rerun the whole shebang ...
10) wildplasser 2: 36.986 ms
WITH sc AS (
SELECT stud_id
FROM student_club
WHERE club_id IN (30,50)
GROUP BY stud_id
HAVING COUNT(*) > 1
)
SELECT s.*
FROM student s
JOIN sc USING (stud_id);
CTE...
Xcode 4.2 - declaration of '…' will not be visible outside of this function warning
...hability.h
– brainray
Feb 24 '12 at 10:05
8
#include, not #import. Due to subtle differences betw...
“Unknown provider: aProvider
...e){...}
– alex naumov
Sep 24 '14 at 10:47
...
C++ Returning reference to local variable
...
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edited Jan 10 '11 at 5:06
answered Jan 10 '11 at 4:38
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Android Shared preferences for creating one time activity (example) [closed]
...
JorgesysJorgesys
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Zipping streams using JDK8 with lambda (java.util.stream.Streams.zip)
... not both?
– Didier L
Jun 28 '15 at 10:49
5
I don't think so. Both streams have to be SIZED for t...
How to run cron once, daily at 10pm
...in GMT).
– nnsense
Apr 24 '19 at 18:10
I upvoted this answer but I did know this rule... anyway I wanted to confirm my...
In C# check that filename is *possibly* valid (not that it exists) [duplicate]
... be what you want.
– Echilon
Jan 2 '10 at 12:14
1
I enhanced this solution using bOk = System.IO....
Standardize data columns in R
... function on the data to do what you want.
dat <- data.frame(x = rnorm(10, 30, .2), y = runif(10, 3, 5))
scaled.dat <- scale(dat)
# check that we get mean of 0 and sd of 1
colMeans(scaled.dat) # faster version of apply(scaled.dat, 2, mean)
apply(scaled.dat, 2, sd)
Using built in functions...