大约有 46,000 项符合查询结果（耗时：0.0730秒） [XML]
postgresql return 0 if returned value is null
...price DESC ) FROM web_price_scan
WHERE listing_Type = 'AARM'
AND u_kbalikepartnumbers_id = 1000307
AND ( EXTRACT( DAY FROM ( NOW() - dateEnded ) ) ) * 24 < 48
AND COALESCE( price, 0 ) > ( SELECT AVG( COALESCE( price, 0 ) )* 0.50
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go to character in vim
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vim +21490go script.py
From the command line will open the file and take you to position 21490 in the buffer.
Triggering it from the command line like this allows you to automate a script to parse the exception message and open the file to the problem position...
Is there a ternary conditional operator in T-SQL?
...E isExternal = IIF(@type = 2, 1, 0)
Also note: in T-SQL, the assignment (and comparison) operator is just = (and not == - that's C#)
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What is the “realm” in basic authentication
I'm setting up basic authentication on a php site and found this page on the php manual showing the set up. What does "realm" mean here in the header?
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What is two way binding?
...d lots that Backbone doesn't do two way binding but I don't exactly understand this concept.
5 Answers
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Could not launch process launch failed: timed out waiting for app to launch
...y check it out your target --> Build Settings --> Code signing.
As @AndyDynn pointed out in his comment:
Make sure you do this on the "Target" build settings and not just the "Project" build settings.
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Datatable vs Dataset
...able objects, you can return multiple distinct sets of data into a single, and therefore more manageable, object.
Performance-wise, you're more likely to get inefficiency from unoptimized queries than from the "wrong" choice of .NET construct. At least, that's been my experience.
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What is the difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout?
Is there any difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout in .NET?
6 Answers
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Why Collections.sort uses merge sort instead of quicksort?
...es, as there is no notion of
identity as distinct from (value) equality. And the possibility of
quadratic behavior was deemed not to be a problem in practice for
Bentely and McIlroy's implementation (or subsequently for Dual Pivot
Quicksort), which is why these QuickSort variants were used f...
Efficiently updating database using SQLAlchemy ORM
I'm starting a new application and looking at using an ORM -- in particular, SQLAlchemy.
6 Answers
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