7/26/2016 · SP_ EXECUTE_EXTERNAL _SCRIPT is a stored procedure that execute provided script as argument on external script to a provided language (in this case R language). To enable normal function of this external stored procedure, you must have administrator access to your SQL Server instance in order to run sp_configure command (and set following configuration):, SQL Server developers or administrators including data engineeers who want to work with R -Script or Python scripts should first enable sp_ execute_external _script stored procedure on SQL Server instance by using sp_configure to modify external scripts enabled system configuration variable. Otherwise, SQL engine will throw following SQL error or exception preventing execution of R script and Python script.
All examples are intended to use simple r -computation embedded in a SQL sentences, such as the following example: DROP PROC IF EXISTS get_iris_dataset go CREATE PROC get_iris_dataset AS BEGIN EXEC sp_ execute_external _script @language = N’ R ‘ , @script = N’iris_data <- iris' , @input_data_1 = N'' , @output_data_1_name = N'iris_data' WITH RESULT ...3/7/2018 · The way to execute sp_ execute_external _script based on this looks like so: EXEC sp_ execute_external _script @language = N' R ', @script = N'source(c:/rscripts/iris_ r . r )' Code Snippet 7: Script Passed in Through Source File. We see in Code Snippet 7 how we use the R command source to load the source code.When you use sp_ execute_external _script to run scripts that are written in Java, Python, or R , the query fails. Status. Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the Applies to section. Resolution. This issue is fixed in the following cumulative update for SQL Server:, 6/5/2017 · The sp_ execute_external _script is a stored procedure to execute script at an external location. The system sp_ execute_external _script stored procedure was introduced in SQL Server 2016 and only supports R language. This post, I will show how to invoke an R script file in SQL Server 2016.If you want to get a nvarchar, you can try something like: EXEC sp_ execute_external _script @language = N' R ' , @script = N' mymodel <- lm (formula = DepVar ~ IndepVar1 + IndepVar2, data = myDemoData) coefficients <- paste (names (mymodel$coefficients), mymodel$coefficients, sep==, collapse = ) ' , @input_data_1 = N'select DepVar, IndepVar1, ...
