A SQL Server Language Extension function is executed in an external process. Does it mean that when such a function is called in a Select clause it creates a new process for every row in the recordset on which it is applied?
SQL Server language extension performance
284 Views Asked by Lorin_F At
1
There are 1 best solutions below
Related Questions in SQL-SERVER
- How to pick a number based on probability?
- Markov chain: join states in Transition Matrix
- How to get a number of probability distributions "averaged"?
- Prediction of sets
- Fast computation of joint histogram of two images
- Given three boxes X, Y, Z. Let W denote white balls and B denote black balls. The contents of the boxes are : X (2W, 3B) , Y(3W, 1B) , Z(1W, 4B).
- Probability generating function
- How to calculate the entropy of a coin flip
- Number of combinations in a given number array in javascript
- Calculating the probability of incorrect events within independent groups
Related Questions in SQLCLR
- How to pick a number based on probability?
- Markov chain: join states in Transition Matrix
- How to get a number of probability distributions "averaged"?
- Prediction of sets
- Fast computation of joint histogram of two images
- Given three boxes X, Y, Z. Let W denote white balls and B denote black balls. The contents of the boxes are : X (2W, 3B) , Y(3W, 1B) , Z(1W, 4B).
- Probability generating function
- How to calculate the entropy of a coin flip
- Number of combinations in a given number array in javascript
- Calculating the probability of incorrect events within independent groups
Related Questions in EXTERNAL-SCRIPT
- How to pick a number based on probability?
- Markov chain: join states in Transition Matrix
- How to get a number of probability distributions "averaged"?
- Prediction of sets
- Fast computation of joint histogram of two images
- Given three boxes X, Y, Z. Let W denote white balls and B denote black balls. The contents of the boxes are : X (2W, 3B) , Y(3W, 1B) , Z(1W, 4B).
- Probability generating function
- How to calculate the entropy of a coin flip
- Number of combinations in a given number array in javascript
- Calculating the probability of incorrect events within independent groups
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular # Hahtags
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
I think you are confusing two different features / technologies.
SQLCLR is the ability to run .NET code (most often C# or VB.NET, but sometimes Visual C++ and occasionally F#, though F# is not officially supported) within the SQL Server process. This code can be called as stored procedures, triggers, scalar functions, table-valued functions, aggregate functions, and even user-defined types. This has the ability to execute T-SQL within the calling session, even if there's an active transaction (i.e. true in-process execution).
External Scripts (language extensions) is newer than SQLCLR and is not .NET-specific. Languages that can be used are: R, Python, Java, and most recently C#. This code can only be executed via the sp_execute_external_script stored procedure; there is not option to call these external scripts via a function. Hence, there is no concept of per-row execution. These scripts are executed by a separate service (i.e. external), hence there is no option for in-process T-SQL code execution (meaning: executing T-SQL via an external script will connect as a separate session).
Additional details can be found in my post:
SQLCLR vs SQL Server 2017, Part 8: Is SQLCLR Deprecated in Favor of Python or R (sp_execute_external_script)?