EF can't infer return schema from Stored Procedure selecting from a #temp table

Question

Suppose the following:

CREATE PROCEDURE [MySPROC]
AS 
BEGIN

CREATE TABLE #tempSubset(
    [MyPrimaryKey] [bigint]  NOT NULL,
    [OtherColumn]  [int]     NO         


        

Answer 1

Adding this to the top of the stored procedure definition:

SET FMTONLY OFF

allowed the model to infer the schema from the temporary table without issue. As a bonus, it doesn't require additional maintenance for a contract.

Example:

SET FMTONLY OFF

CREATE TABLE #tempTable (
    ...
)

...

SELECT * FROM #tempTable