set default parameter for function parameter

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set default parameter for function parameter

ccmret

Right there with Babe

Points: 759
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January 13, 2014 at 1:11 pm

#396102

Hello I want to set the default parameters for a function. I;d like to set the date start date to current date and end date for the last 90 days. Any ideas on how to make this work?
Create Function HR.Equipment
(
@startdate Date =(Convert(Date,DATEADD(DAY,-1,GETDATE())),
@enddate Date = (Convert(Date,@StartDate-90)
)
RETURNS TABLE AS RETURN
(
SELECT
EquipID,
EmpName,
IssueDate
FROM HR.Equipment
WHERE IssueDate <=@StartDate and IssueDate >=@EndDate
)
GO

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Lynn Pettis SSC Guru Points: 442467 More actions · Answer 1

ccmret (1/13/2014)
Hello I want to set the default parameters for a function. I;d like to set the date start date to current date and end date for the last 90 days. Any ideas on how to make this work?
Create Function HR.Equipment
(
@startdate Date =(Convert(Date,DATEADD(DAY,-1,GETDATE())),
@enddate Date = (Convert(Date,@StartDate-90)
)
RETURNS TABLE AS RETURN
(
SELECT
EquipID,
EmpName,
IssueDate
FROM HR.Equipment
WHERE IssueDate <=@StartDate and IssueDate >=@EndDate
)
GO

What seems to be your problem? Are you getting an error message? If so, what is it?

Luis Cazares SSC Guru Points: 183706 More actions · Answer 2

I can't find the reference (so I might be wrong), but I'm sure you can't assign values from a function when declaring parameter defaults.

EDIT: Reference seems to be only for CREATE PROCEDURE where it states: "The default value must be a constant or it can be NULL". However, this remark is not made in CREATE FUNCTION.

Luis C.
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ccmret Right there with Babe Points: 759 More actions · Answer 3

I get incorrect syntax near keyword CONVERT and Must declare the scalar variable @startdate

Lowell SSC Guru Points: 323518 More actions · Answer 4

Luis pointed it out i think; the assignment must be a static value or constant;

a convert cannot be used, even if it was a static date, nore getdate,

and when you call it with defaults, you'd need to use the default keyword, since the parameters are manditory for a function

something like this looks like it is along the lines of what you need:

Create Function HR.Equipment

(

@startdate Date =NULL,

@enddate Date =NULL

)

RETURNS TABLE AS RETURN

(

SELECT

EquipID,

EmpName,

IssueDate

FROM HR.Equipment

WHERE IssueDate <=ISNULL(@StartDate,DATEADD(DAY,-1,GETDATE())) and IssueDate >=ISNULL(@enddate,DATEADD(DAY,-90,GETDATE()))

)

Lowell

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ccmret Right there with Babe Points: 759 More actions · Answer 5

ccmret

Right there with Babe

Points: 759

January 13, 2014 at 2:26 pm

#1679720

This seemed to work Lowell. Thanks a bunch.