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INSERT INTO #ApplicationFiles (OurBranchID, ApplicationFileNo)
SELECT
ApplicationDetails.x.value('OurBranchID[1]','nVarchar(12)'),
ApplicationDetails.x.value('ApplicationFileNo[1]','nVarchar(20)')
FROM
#ApplicationDetails.nodes('/JSON/dt_ApplicationDetails') AS ApplicationDetails(x)
The query is taking a long time to complete. I want to increase the performance of the query.
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When using a graph database, there is such a requirement that it is necessary to query whether a certain tag of the vertex exists according to the id of the vertex. How to write this statement？
Here's how to query a tag of the vertex exists based on its id:
match (v:t_out_corporation) where id(v)==‘123A123’ return v.t_out_corporation.cust_value;
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In SQL Server we have Index Seek operator. Which works very well for a search operation.
How much operation SQL Server needs to perform in order to get a value? I assume that it should be the height of the tree.
Nobody can say the one answer for sure because it depends on many parameters :
Index type (Clusted, None Clustered)
Unique or Not
Null or Not Null
Expected rows stored in which page
So, there is the well-explained article about index seeking [O2] blow:
https://sqlserverfast.com/epr/index-seek/
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I need to run kernel function 1 million times. In each core i need to create dynamic array of 1000 elements. How i can resolve this problem? Should i create buffer of 1 million * 1000 elements and contact them using id,but it's a lot of memory, and i haven't as much? Or is there another resolve?
Yes, you have to create a buffer of 1mil*1000, at least thats what i experienced.
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Can someone tell me what is missing in the second Pivot example. It returns NULL http://sqlfiddle.com/#!3/2b405/2
This is the literal answer:
There is no Car, Truck or Bicycle in your vehicle_parameters table. Nothing is missing in your statement, your result of NULL is correct.
Here are some other samples of PIVOT you may want to look up: https://technet.microsoft.com/en-us/library/ms177410%28v=sql.105%29.aspx
I think they explain dealing with nulls well.
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Does any one have idea about storing email boby in the sql server. The email body is about 15 lines. what has to be done inorder to maintain a table with 40 different emails contents.
Example:
a : some cotent should be sent
b : some other content
You'll probably want an nvarchar(max) column to store the contents of the body. This allows you to store up to 2GB worth of text...which is kind of a lot of text, so you should be good.