Microsoft SQL Server Natively compiled modules (Hekaton) Native inline table value function
Example
Native compiled table value function returns table as result. Code in natively compiled function will be transformed into C code and compiled as dll. Only inline table valued functions are supported in version 2016. To create a native table value function you need to:
- Use standard CREATE FUNCTION syntax
- Set NATIVE_COMPILATION option in function definition
- Use SCHEMABINDING option in function definition
Instead of standard BEGIN END block, you need to use BEGIN ATOMIC block:
BEGIN ATOMIC
WITH (TRANSACTION ISOLATION LEVEL=SNAPSHOT, LANGUAGE='us_english')
-- T-Sql code goes here
END
Example:
CREATE FUNCTION [dbo].[udft_NativeGetBusinessDoc]
(
@RunDate VARCHAR(25)
)
RETURNS TABLE
WITH SCHEMABINDING,
NATIVE_COMPILATION
AS
RETURN
(
SELECT BusinessDocNo,
ProductCode,
UnitID,
ReasonID,
PriceID,
RunDate,
ReturnPercent,
Qty,
RewardAmount,
ModifyDate,
UserID
FROM dbo.[BusinessDocDetail_11]
WHERE RunDate >= @RunDate
);
