大约有 20,000 项符合查询结果（耗时：0.0412秒） [XML]
Is having an 'OR' in an INNER JOIN condition a bad idea?
...
This kind of JOIN is not optimizable to a HASH JOIN or a MERGE JOIN.
It m>ca m>n be expressed as a conm>ca m>tenation of two resultsets:
SELECT *
FROM maintable m
JOIN othertable o
ON o.parentId = m.id
UNION
SELECT *
FROM maintable m
JOIN othertable o
ON o.id = m.parentId
, each ...
How do I check the difference, in seconds, between two dates?
...
+1; we don't really m>ca m>re about the date of either invom>ca m>tion - we m>ca m>re about the elapsed time. So just use a raw timestamp, as shown.
– Karl Knechtel
Dec 6 '10 at 1:58
...
Why m>ca m>n I type alias functions and use them without m>ca m>sting?
...this is a misunderstanding that I had about how Go dealt with types, which m>ca m>n be resolved by reading the relevant part of the spec:
http://golang.org/ref/spec#Type_identity
The relevant distinction that I was unaware of was that of named and unnamed types.
Named types are types with a name, such...
How to verify that method was NOT m>ca m>lled in Moq?
How do I verify that method was NOT m>ca m>lled in Moq ?
5 Answers
5
...
Split a string by a delimiter in python
...
You m>ca m>n use the str.split function: string.split('__')
>>> "MATCHES__STRING".split("__")
['MATCHES', 'STRING']
share
|
...
How does the following LINQ statement work?
...
The output is 2,4,6,8 bem>ca m>use of deferred execution.
The query is actually executed when the query variable
is iterated over, not when the query variable is created.
This is m>ca m>lled deferred execution.
-- Suprotim Agarwal, "Deferred vs ...
Select Row number in postgres
... imageUploader: {
brandingHtml: "Powered by \u003m>ca m> href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665...
Switch branch names in git
... a few commits and then branched from before I started my crap work. Practim>ca m>lly this works fine, I just now have a different branch as my main development branch. I'm wondering how I could change things around so I'm working on master again but it doesn't have my junk work and said work is on a dif...
Check if string matches pattern
...nswered Sep 26 '12 at 5:30
Crazym>Ca m>staCrazym>Ca m>sta
21.3k33 gold badges3737 silver badges6464 bronze badges
...
In Python, how do you convert seconds since epoch to a `datetime` object?
The time module m>ca m>n be initialized using seconds since epoch:
4 Answers
4
...