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Dynamic SQL - EXEC(@SQL) versus EXEC SP_EXECUTESQL(@SQL)
...nd @IsTuesday are sp params)
execute the command
declare @sql varchar (100)
set @sql ='select * from #td1'
if (@IsMonday+@IsTuesday !='')
begin
set @sql= @sql+' where PickupDay in ('''+@IsMonday+''','''+@IsTuesday+''' )'
end
exec( @sql)
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Weighted random numbers
... // Demonstrate with N randomly generated numbers
const unsigned N = 1000000;
// Collect number of times each random number is generated
double avg[std::extent<decltype(weights)>::value] = {0};
for (unsigned i = 0; i < N; ++i)
{
// Generate random number using ...
Spark java.lang.OutOfMemoryError: Java heap space
... knowledge into your algo/serialisation can minimise memory/cache-space by 100x or 1000x, whereas all a Dataset will likely give is 2x - 5x in memory and 10x compressed (parquet) on disk.
http://spark.apache.org/docs/1.2.1/configuration.html
EDIT: (So I can google myself easier) The following is ...
What is your naming convention for stored procedures? [closed]
...mmended naming convention: msdn.microsoft.com/en-us/library/ms124456(v=SQL.100).aspx
– asus3000
Jun 8 '17 at 13:28
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Virtual functions and performance - C++
...fit in L1) and ran a loop that added them to one another (A.x = B.x + C.x) 1000 times. I ran this with the functions defined as inline, virtual, and regular function calls. Here are the results:
inline: 8ms (0.65ns per call)
direct: 68ms (5.53ns per call)
virtual: 160ms (13ns per call)
So, ...
NULL vs nil in Objective-C
...rough MacTypes.h, it declares #define nil NULL
– jbat100
Nov 27 '11 at 13:57
1
That is very inter...
Database Design for Revisions?
...)') AS FirstName,
RevisionXML.value('(/employee/LastName)[1]', 'varchar(100)') AS LastName,
RevisionXML.value('(/employee/DepartmentId)[1]', 'integer') AS DepartmentId,
FROM EmployeeHistories
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Can you use an alias in the WHERE clause in mysql?
..., gender, age FROM customer
WHERE gender = 'F') AS c
WHERE c.custId = 100;
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How to change ViewPager's page?
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@Richard You save my day buddy. 10000+ for notifyDataSetChanged()
– Ali
May 4 at 6:58
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Why is a ConcurrentModificationException thrown and how to debug it
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+100
Modification of a Collection while iterating through that Collection using an Iterator is not permitted by most of the Collection cl...