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What is the difference between partitioning and bucketing a table in Hive ?
...xample, suppose a table using date as the top-level partition and employee_id as the second-level partition leads to too many small partitions. Instead, if we bucket the employee table and use employee_id as the bucketing column, the value of this column will be hashed by a user-defined number into ...
Web Reference vs. Service Reference
...ed. Both types of references will create a class which provides methods to call the service operations. How is it relevant that the class created by a "service" reference happens to inherit from a base class which happens to be in a library that Microsoft considers to be part of some technology it c...
jQuery’s .bind() vs. .on()
...version of jQuery. (The same goes for .live.) So there is a tiny but practically insignificant performance hit if you use .bind instead.
However, .bind may be removed from future versions at any time. There is no reason to keep using .bind and every reason to prefer .on instead.
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How to use GROUP BY to concatenate strings in SQL Server?
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[Note: This solution only works on SQL 2005 and later. Original question didn't specify the version in use.]
CREATE TABLE #YourTable ([ID] INT, [Name] CHAR(1), [Value] INT)
INSERT INTO #YourTable ([ID],[Name],[Value]) VALUES (1,'A',4)
INSERT INTO #YourTable ([ID],[Name],[Value]) VALUES (1,'B',8)
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What are the special dollar sign shell variables?
... I'm here and I can't find an answer anywhere because I don't know what to call it.
– Anthony
Oct 12 '16 at 19:47
7
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How assignment works with Python list slice?
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@KartikAnand: Basically, yes. The interpreter knows which is which, and handles them appropriately.
– NPE
May 16 '12 at 17:21
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Add Bootstrap Glyphicon to Input Box
... Although this doesn't do so hot at left aligning icons like the question calls for, but definitely a good approach.
– KyleMit
Jun 26 '14 at 15:46
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Laravel Migration Change to Make a Column Nullable
I created a migration with unsigned user_id . How can I edit user_id in a new migration to also make it nullable() ?
9 ...
Check if a string contains one of 10 characters
...ation) >= 0;
}
That way you don't end up creating a new array on each call. The string is also easier to scan than a series of character literals, IMO.
Of course if you're only going to use this once, so the wasted creation isn't a problem, you could either use:
private const string Punctuati...
Declare a constant array
...constant expression, while math.Sin(math.Pi/4) is not because the function call to math.Sin needs to happen at run time.
Slices and arrays are always evaluated during runtime:
var TestSlice = []float32 {.03, .02}
var TestArray = [2]float32 {.03, .02}
var TestArray2 = [...]float32 {.03, .02}
[...] ...