Pass multiple values as parameter into a stored procedure

Question

I have the stored procedure to which I pass the parameters. These parameters are indicated by another tool. One of the parameter has a list of entities like C200 , C010 etc.

But the requirement is that the person who will run the stored procedure from another tool (Fluence) should be able to call by each entity but also to retrieve the data related to all the entities.

I have the SQL code shown here, which perfectly works if you choose one entity at a time. In the Where clause, I filter it based on the @Entitygroup which is Declared . From another tool to fetch the all the Entity is passed at Total_group parameter name.

ALTER PROCEDURE [DW].[SP_Fetch_Data] 
    @par_FiscalCalendarYear varchar(10), 
    @par_Entity AS varchar (10)
AS
BEGIN
    /*
    BALANCE ACCOUNTS
    */
    DECLARE @FiscalCalendarYear int  =  SUBSTRING(@par_FiscalCalendarYear,1,4)  /* 2022 */
        , @FiscalCalendarMonth int =  SUBSTRING (@par_FiscalCalendarYear,7,10) /* 11 */;
    DECLARE @FiscalCalendarPeriod int = @FiscalCalendarYear * 100 + @FiscalCalendarMonth
    DECLARE @Entitygroup varchar = @par_Entity
    
    SELECT UPPER([GeneralJournalEntry].SubledgerVoucherDataAreaId) as [Entity]
        , CONCAT(@FiscalCalendarYear, ' P', @FiscalCalendarMonth) as [Date]
        , ISNULL(ConsolidationMainAccount, '') as [Account]
        , [GeneralJournalAccountEntry].TransactionCurrencyCode as [Currency]
        , SUM([GeneralJournalAccountEntry].TransactionCurrencyAmount) as [Amount]
        , 'Import' as [Audit]
        , 'TCUR' as [DataView]
        , ISNULL([CostCenter].[GroupDimension], 'No Costcenter') as [CostCenter]
        , 'No Group' as [Group]
        , ISNULL([Intercompany].[DisplayValue], 'No Intercompany') as [Intercompany]
        , 'Closing' as [Movement]
        , ISNULL([ProductCategory].[GroupDimension], 'No ProductCategory')  as [ProductCategory]
        , ISNULL([Region].[GroupDimension], 'No Region')  as [Region]
        , ISNULL([SalesChannel].[GroupDimension], 'No SalesChannel')  as [SalesChannel]
        , 'Actual' as [Scenario]
    FROM [D365].[GeneralJournalAccountEntry]
    LEFT JOIN [D365].[GeneralJournalEntry] ON [GeneralJournalAccountEntry].GENERALJOURNALENTRY = [GeneralJournalEntry].[RECID]
        AND [GeneralJournalAccountEntry].[PARTITION] = [GeneralJournalEntry].[PARTITION]
    LEFT JOIN [D365].[FiscalCalendarPeriod] ON [GeneralJournalEntry].FiscalCalendarPeriod = FiscalCalendarPeriod.FiscalCalendarPeriod
    LEFT JOIN [DW].[MainAccounts] ON [GeneralJournalAccountEntry].MainAccount = [MainAccounts].[RECID]
    LEFT JOIN [DW].[Intercompany] ON [GeneralJournalAccountEntry].[RECID] = [Intercompany].[RECID]
    LEFT JOIN [DW].[ProductCategory] ON [GeneralJournalAccountEntry].[RECID] = [ProductCategory].[RECID]
    LEFT JOIN [DW].[Region] ON [GeneralJournalAccountEntry].[RECID] = [Region].[RECID]
    LEFT JOIN [DW].[SalesChannel] ON [GeneralJournalAccountEntry].[RECID] = [SalesChannel].[RECID]
    LEFT JOIN [DW].[CostCenter] ON [GeneralJournalAccountEntry].[RECID] = [CostCenter].[RECID]
    WHERE [EnumItemName] IN ('Revenue', 'Expense', 'BalanceSheet', 'Asset', 'Liability')
    AND [FiscalCalendarPeriod].FiscalCalendarPeriodInt <= @FiscalCalendarPeriod
    AND [GeneralJournalEntry].SubledgerVoucherDataAreaId <= @Entitygroup
    GROUP BY UPPER([GeneralJournalEntry].SubledgerVoucherDataAreaId)
        , ISNULL(ConsolidationMainAccount, '')
        , [GeneralJournalAccountEntry].TransactionCurrencyCode
        , ISNULL([CostCenter].[GroupDimension], 'No Costcenter')
        , ISNULL([Intercompany].[DisplayValue], 'No Intercompany')
        , ISNULL([ProductCategory].[GroupDimension], 'No ProductCategory')
        , ISNULL([Region].[GroupDimension], 'No Region')
        , ISNULL([SalesChannel].[GroupDimension], 'No SalesChannel')

Answer 1

(would be a mess as a comment)

Do you mean if @par_entity is not null and has a value other than '' then use that else go on as if it is not there at all? Then you can change your code:

DECLARE @Entitygroup varchar = @par_Entity

To:

DECLARE @Entitygroup varchar = case 
             when @par_Entity is not null then @par_Entity 
             else '' 
           end;

And:

AND [GeneralJournalEntry].SubledgerVoucherDataAreaId <= @Entitygroup

To:

AND (@Entitygroup = '' OR [GeneralJournalEntry].SubledgerVoucherDataAreaId <= @Entitygroup)

PS: Performance wise it wouldn't be optimal.

EDIT: You might also set it to the possible max value when it is not passed. ie:

DECLARE @Entitygroup varchar = case 
                 when @par_Entity is null or @par_entity = '' then 'zzzzzz' 
                 else @par_Entity
               end;

AND [GeneralJournalEntry].SubledgerVoucherDataAreaId <= @Entitygroup