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SQL JOIN and different types of JOINs
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These pictures seem to imply that union is same as full outer join and intersection is same as inner join which is not correct as far as I know.
– mightyWOZ
Jun 16 '17 at 5:13
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Do asynchronous operations in ASP.NET MVC use a thread from ThreadPool on .NET 4
...ave I/O intensive operations (such as database and network calls to remote services). If you have a CPU intensive operation, asynchronous actions won't bring you much benefit.
So why can we gain benefit from I/O intensive operations? Because we could use I/O Completion Ports. IOCP are extremely po...
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 ...
sql query to return differences between two tables
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( SELECT * FROM table1
EXCEPT
SELECT * FROM table2)
UNION ALL
( SELECT * FROM table2
EXCEPT
SELECT * FROM table1)
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What is the difference between HashSet and List?
...ish (or other language). Even better would be if you wanted to build a web service to be used by all instances of an online version of such a game.
A List<T> would be a good data structure for creating the scoreboard to track player scores.
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Is there a combination of “LIKE” and “IN” in SQL?
...t; create table mytable (something)
2 as
3 select 'blabla' from dual union all
4 select 'notbla' from dual union all
5 select 'ofooof' from dual union all
6 select 'ofofof' from dual union all
7 select 'batzzz' from dual
8 /
Table created.
The original syntax:
SQL> select...
Database development mistakes made by application developers [closed]
...ies defining the requirements and ask the vendors to quote on adding a web service wrapper to their existing products.
– ConcernedOfTunbridgeWells
Aug 7 '10 at 18:56
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DTO = ViewModel?
...ple I'm using an ASP.NET MVC project as both my presentation layer, and my service layer.
8 Answers
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PHP - add item to beginning of associative array [duplicate]
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You could use the union operator:
$arr1 = array('key0' => 'value0') + $arr1;
or array_merge.
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Why use the SQL Server 2008 geography data type?
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