A Quick Start to Running Python Code in SQL Server

Question

A Quick Start to Running Python Code in SQL Server

Emmitt Albright

Old Hand

Points: 385
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April 18, 2019 at 12:00 am

#3436046

Comments posted to this topic are about the item A Quick Start to Running Python Code in SQL Server

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qubic808 Newbie Points: 1 More actions · Answer 1

Hi Emmitt,

I'm having a little trouble getting the following to run. I suspect the table Result1 table should already exist for it to insert the output generated.

Any hints on the table creation requirement here?

DECLARE @InputQuery NVARCHAR(2000) = N'

SELECT n from (values (1), (2), (3)) a(n)

'

INSERT dbo.Result1

EXEC sp_execute_external_script

@language =N'Python',

@script=N'OutputDataSet = InputDataSet',

@input_data_1 = @InputQuery

Steve Jones - SSC Editor SSC Guru Points: 736478 More actions · Answer 2

I believe this is standard SQL from reading the article. This is INSERT..EXEC, so the table would need to exist.

stelios21 Valued Member Points: 74 More actions · Answer 3

Hi Emmitt

Great article. I have a question regarding the first script. Why are the numbers in the outcome

1

3

5

9

7

appearing in that order? Shouldn't 7 come before 9? I find that quite weird.

Best

Stelios

Emmitt Albright Old Hand Points: 385 More actions · Answer 4

There is no ordering guarantee for the numbers when they are in a set

https://stackoverflow.com/questions/9792664/converting-a-list-to-a-set-changes-element-order

jay Grasshopper Points: 10 More actions · Answer 5

Good article, thank you...

Note: In the one example you're missing the column name;

DECLARE @InputQuery NVARCHAR(2000) = N'
SELECT n, o 
FROM (values (1,10), (2,20), (3,30)) a(n, o)
'
EXEC sp_execute_external_script 
@language =N'Python',
@script=N'OutputDataSet = InputDataSet', 
@input_data_1 = @InputQuery
WITH RESULT SETS
( ( [MissingColumnName] INT NOT NULL,
[iplusTen] INT NULL)
)