大约有 31,500 项符合查询结果（耗时：0.0363秒） [XML]
SQL Server indexes - ascending or descending, what difference does it make?
...ts(db_id(), object_id('T1'), 1, NULL, 'DETAILED')
WHERE index_level = 0
UNION ALL
SELECT object_name(object_id) AS name,
page_count,
avg_fragmentation_in_percent,
fragment_count,
avg_fragment_size_in_pages
FROM
sys.dm_db_index_physical_stats(db_id(), object_id('...
Why does substring slicing with index out of range work?
... to do when given an out-of-bounds slice. It's analogous to performing the union of two disjoint sets.
– senderle
Feb 28 '12 at 22:49
...
CROSS JOIN vs INNER JOIN in SQL
...g data from another SQL table for two different columns: Inner Join and/or Union?
Is there any rule of thumb to construct SQL query from a human-readable description?
Overloading "cross join"
Unfortunately the term "cross join" gets used for:
The intermediate product.
CROSS JOIN.
(INNER) JOIN ...
How to filter SQL results in a has-many-through relation
...RE NOT EXISTS (
SELECT *
FROM (
SELECT 30 AS club_id
UNION ALL
SELECT 50
) AS c
WHERE NOT EXISTS (
SELECT *
FROM student_club AS sc
WHERE sc.stud_id = s.stud_id
AND sc.club_id = c.club_id
)
);
As expected, those two pe...
Efficiency of purely functional programming
...n pure lambda calculus) is known, even with laziness.
The aforementioned union-find
Hash tables
Arrays
Some graph algorithms
...
However, we assume that in "imperative" languages access to memory is O(1) whereas in theory that can't be so asymptotically (i.e. for unbounded problem sizes) and acc...
List of ANSI color escape sequences
...ange format: Document structures. T.412. International Telecommunication Union.
Information technology — Open Document Architecture (ODA) and interchange format: Character content architectures. T.416. International Telecommunication Union.
Information technology— Open Document Architecture ...
Best approach for designing F# libraries for use from both F# and C#
...tten in a functional style (using F# function types, tuples, discriminated unions etc.)
.NET library is designed to be used from any .NET language (including C# and F#) and it typically follows .NET object-oriented style. This means that you'll expose most of the functionality as classes with method...
docker mounting volumes on host
...ory on your hosts disk outside the container file structure, bypassing the union file system.
The idea is that your volumes can be shared between your docker containers and they will stay around as long as there's a container (running or stopped) that references them.
You can have other containers...
What is The Rule of Three?
...ns copying its members:
The implicitly-defined copy constructor for a non-union class X performs a memberwise copy of its subobjects.
[n3126.pdf section 12.8 §16]
The implicitly-defined copy assignment operator for a non-union class X performs memberwise copy assignment
of its subobjects.
[n3126...
What does “coalgebra” mean in the context of programming?
...through all elements of A and b goes through all elements of B).
Disjoint union of two sets A and B is a set A | B which is a union of sets {(a, 1) : a in A} and {(b, 2) : b in B}. Essentially it is a set of all elements from both A and B, but with each of this elements 'marked' as belonging to eit...