Sql CREATE FUNCTION

Sql CREATE FUNCTION
Nikhil
Published on 2021-08-14 15:01:21

Argument Description

  • function_name the name of function
  • list_of_paramenters parameters that function accepts
  • return_data_type type that function returs. Some SQL data type
  • function_body the code of function
  • scalar_expression scalar value returned by function

Create a new Function

CREATE FUNCTION FirstWord (@input varchar(1000))
RETURNS varchar(1000)
AS
BEGIN
DECLARE @output varchar(1000)
SET @output = SUBSTRING(@input, 0, CASE CHARINDEX(' ', @input)
WHEN 0 THEN LEN(@input) + 1
ELSE CHARINDEX(' ', @input)
END)
RETURN @output
END

This example creates a function named FirstWord, that accepts a varchar parameter and returns another varchar value.

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