大约有 40,000 项符合查询结果（耗时：0.0402秒） [XML]
LEFT JOIN only first row
...en the MIN(artist_id) will be the earliest.
So try something like this (untested...)
SELECT *
FROM feeds f
LEFT JOIN artists a ON a.artist_id = (
SELECT
MIN(fa.artist_id) a_id
FROM feeds_artists fa
WHERE fa.feed_id = f.feed_id
) a
...
Is there a way to make a DIV unselectable?
...e: msdn.microsoft.com/en-us/library/hh801966(v=vs.85).aspx But I actually tested on IE, and it works correctly.
– KimKha
May 1 '13 at 15:27
...
How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?
...pes. These objects have more information than JVM does, which enable us to test for the full, parameterized type.
Note, however, that a Manifest is still an evolving feature. As an example of its limitations, it presently doesn't know anything about variance, and assumes everything is co-variant. I ...
Regular Expression to match only alphabetic characters
...('/^[A-Z]+$/i', "abcAbc^Xyz", $m);
var_dump($m);
Output:
array(0) {
}
Test case is for OP's comment that he wants to match only if there are 1 or more alphabets present in the input. As you can see in the test case that matches failed because there was ^ in the input string abcAbc^Xyz.
Note: ...
How to check if a number is a power of 2
...t examples. e.g. Isolate the rightmost 1-bit with y = x & (-x). This test is just a special case of clearing the lowest set bit.
– Peter Cordes
Sep 18 at 18:34
add a com...
Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...Hello, World")
chenhao-air:lua chenhao$ chmod +x hello.lua
chenhao-air:test chenhao$ ./hello.lua
Hello, World
语法
注释
1
-- 两个减号是行注释
1
2
3
4
--[[
这是块注释
这是...
C++ sorting and keeping track of indexes
...that of std::sort except for an index container to receive sorted indexes.
testing:
int a[] = { 3, 1, 0, 4 } ;
std::vector<size_t> indexes ;
argsort(a, a + sizeof(a) / sizeof(a[0]), std::less<int>(), indexes) ;
for (size_t i : indexes) printf("%d\n", int(i)) ;
you should get 2 1 0 3.
...
How do I create a variable number of variables?
..."x"] = "bar" using print x gives the output bar for Jython 2.5.2. This was tested with an On Demand Automation Script in maximo.
– Preacher
Mar 30 at 22:52
add a comment
...
Cross field validation with Hibernate Validator (JSR 303)
... to create an annotation and a validator every time I have a novel type of test to perform.
– user41871
Apr 6 '11 at 7:30
4
...
Accessing a Shared File (UNC) From a Remote, Non-Trusted Domain With Credentials
... the user name and password to use the current credentials. I will do some testing to see if this works.
– flipdoubt
Oct 23 '09 at 19:27
...