SQL how to get an equality comparator on a list of ints

Question

I\'m writing an SQL query as follows:

ALTER proc [dbo].[Invoice_GetHomePageInvoices] (
      @AreaIdList varchar(max)
,      @FinancialYearStartDate datetime = n         


        

Answer 1

Unpack your ID list to a table and use where AreadID in (select ID from ...)

ALTER proc [dbo].[Invoice_GetHomePageInvoices] (
       @AreaIdList varchar(max)
,      @FinancialYearStartDate datetime = null
,      @FinancialYearEndDate datetime = null
) as

set nocount on

set @AreaIdList = @AreaIdList+','
declare @T table(ID int primary key)
while len(@AreaIdList) > 1
begin
  insert into @T(ID) values (left(@AreaIdList, charindex(',', @AreaIdList)-1))
  set @AreaIdList = stuff(@AreaIdList, 1, charindex(',', @AreaIdList), '')
end

select *
from Invoice i
  left outer join Organisation o on i.OrganisationId = o.Id
  left outer join Area a on i.AreaId = a.Id
where i.InvoiceDate BETWEEN @FinancialYearStartDate AND @FinancialYearEndDate and
      i.AreadID in (select ID from @T)