大约有 31,500 项符合查询结果（耗时：0.0182秒） [XML]
How to find the most recent file in a directory using .NET, and without looping?
...westFile(DirectoryInfo directory) {
return directory.GetFiles()
.Union(directory.GetDirectories().Select(d => GetNewestFile(d)))
.OrderByDescending(f => (f == null ? DateTime.MinValue : f.LastWriteTime))
.FirstOrDefault();
}
Just call it the fo...
SELECT INTO a table variable in T-SQL
...ce table as long as the CTE doesn't reference multiple tables using joins, unions , etc.
– nanestev
Apr 13 '18 at 14:11
2
...
Is there a way to call a stored procedure with Dapper?
...like '%'+@keyword+'%'
-- WHERE
-- parentid = @parentid
UNION ALL
SELECT
p.EventCategoryID as Id, cast(p.Title + '>>' + c.name as varchar(max)) as Name,
c.IdHierarchy + cast(p.EventCategoryID as char(5)),p.ParentID
FROM
EventCategory p ...
How do I find a “gap” in running counter with SQL?
... 6.
I did something like this
SELECT MIN(ID+1) FROM (
SELECT 0 AS ID UNION ALL
SELECT
MIN(ID + 1)
FROM
TableX) AS T1
WHERE
ID+1 NOT IN (SELECT ID FROM TableX)
share
|
...
How do I add the contents of an iterable to a set?
...
@eipxen: There's | for union, & for intersection, and ^ for getting elements that are in one or the other but not both. But in a dynamically typed language where it's sometimes difficult to read the code and know the types of objects flying aro...
Practical uses of different data structures [closed]
... that are composed of more than one primitive data types.class, structure, union, array/record.
abstract datatypes are composite datatypes that have way to access them efficiently which is called as an algorithm. Depending on the way the data is accessed data structures are divided into linear and n...
Get difference between two lists
...the following simple function.
def diff(list1, list2):
c = set(list1).union(set(list2)) # or c = set(list1) | set(list2)
d = set(list1).intersection(set(list2)) # or d = set(list1) & set(list2)
return list(c - d)
or
def diff(list1, list2):
return list(set(list1).symmetric_d...
Define: What is a HashSet?
...ontains and Remove.) HashSet also provides standard set operations such as union, intersection, and symmetric difference. Take a look here
There are different implementations of Sets. Some make insertion and lookup operations super fast by hashing elements. However, that means that the order in whi...
Parse JSON in TSQL
... ,j.[Key] AS [GenericPath]
FROM OPENJSON(@json) j
UNION ALL
SELECT CAST(d.Path AS NVARCHAR(4000)) COLLATE DATABASE_DEFAULT AS [Parent]
,j.[Key] AS [Param],j.Value,j.Type
,d.Path + CASE d.Type WHEN 5 THEN '.' WHEN 4 THEN '[' ELSE '' END + j.[K...
Cannot resolve the collation conflict between “SQL_Latin1_General_CP1_CI_AS” and “Latin1_General_CI_
... If the same two fields are used together in other places (comparisons, unions, coalesce, etc...) make sure that each of those also have the collation specified.
– Zarepheth
Feb 17 '14 at 21:26
...