SQL Server verwenden Union alle und Paging

Question

Wie Sie Paging anwenden, wenn wir Union alle verwenden, um das Ergebnis aus zwei Tabellen zu bekommen. Unter dem Code hier bin ich doppelte Werte in 'row_num' Spalte, die für Paging verwendet wurde.

;WITH resultSetCTE AS 
    (
SELECT 
    ROW_NUMBER() OVER 
    (
     ORDER BY nr.is_read,nr.is_read_cashier, 
    CASE @columnSortNameDirection WHEN 'Pin' THEN r.name END ASC, 
    CASE @columnSortNameDirection WHEN 'PinDesc' THEN r.firstname END DESC 
    ) AS 'row_num', 
    r.clave_receiver AS 'Pin', 
    r.id_branch AS 'Id_Branch', 
    r.id_receiver AS 'Id_receiver', 
    s.name_sender AS 'SenderFullName', 
    r.name_receiver AS 'ReceiverFullName', 
    r.id_flag_receiver AS 'Status', 
    pas.option_name AS 'ApprovalStatus', 
    r.mode_pay_receiver AS 'PaymentModeId' 


    UNION ALL 

    SELECT 
    ROW_NUMBER() OVER 
    (
    ORDER BY nr.is_read,nr.is_read_cashier, 
    CASE @columnSortNameDirection WHEN 'Pin' THEN r.name END ASC, 
    CASE @columnSortNameDirection WHEN 'PinDesc' THEN r.firstname END DESC 
    ) AS 'row_num', 
    r.clave_receiver AS 'Pin', 
    r.id_branch AS 'Id_Branch', 
    r.id_receiver AS 'Id_receiver', 
    s.name_sender AS 'SenderFullName', 
    r.name_receiver AS 'ReceiverFullName', 
    r.id_flag_receiver AS 'Status', 
    pas.option_name AS 'ApprovalStatus', 
    r.mode_pay_receiver AS 'PaymentModeId' 

) 
    SELECT *, 
(SELECT COUNT(1) FROM resultSetCTE) AS 'RecordCount' 
FROM resultSetCTE 
WHERE row_num BETWEEN (1 - 1) * 15 + 1 AND 1 * 15 
ORDER by IsRead,IsReadCashier 

Answer 1

wenn Sie nicht die komplette Abfrage gebucht haben, könnten Sie so etwas wie diese

declare @columnSortNameDirection varchar(5) 
;WITH resultSetCTE AS 
    (

select ROW_NUMBER() OVER 
(
     ORDER BY nr.is_read,nr.is_read_cashier, 
    CASE @columnSortNameDirection WHEN 'Pin' THEN r.name END ASC, 
    CASE @columnSortNameDirection WHEN 'PinDesc' THEN r.firstname END DESC 
) AS 'row_num',* from ( SELECT  
    r.clave_receiver AS 'Pin', 
    r.id_branch AS 'Id_Branch', 
    r.id_receiver AS 'Id_receiver', 
    s.name_sender AS 'SenderFullName', 
    r.name_receiver AS 'ReceiverFullName', 
    r.id_flag_receiver AS 'Status', 
    pas.option_name AS 'ApprovalStatus', 
    r.mode_pay_receiver AS 'PaymentModeId' 
    UNION ALL 
    SELECT 

    r.clave_receiver AS 'Pin', 
    r.id_branch AS 'Id_Branch', 
    r.id_receiver AS 'Id_receiver', 
    s.name_sender AS 'SenderFullName', 
    r.name_receiver AS 'ReceiverFullName', 
    r.id_flag_receiver AS 'Status', 
    pas.option_name AS 'ApprovalStatus', 
    r.mode_pay_receiver AS 'PaymentModeId') as A 

) 
    Select *, 
(SELECT COUNT(1) FROM resultSetCTE) AS 'RecordCount' 
FROM resultSetCTE 
WHERE row_num BETWEEN (1 - 1) * 15 + 1 AND 1 * 15 
ORDER by IsRead,IsReadCashier 

Answer 2

Verwenden Sie stattdessen offset/fetch. Es löst alle Ihre Probleme. Mehr Infos hier: https://technet.microsoft.com/en-us/library/gg699618(v=sql.110).aspx

Code-Beispiel (bitte aktualisieren, indem Sie Ihre Bedürfnisse):

;WITH [resultSetCTE] AS 
(
    SELECT 
     [col] = [object_id] 
    FROM 
     [sys].[tables] 

    UNION ALL 

    SELECT 
     [col] = [object_id] 
    FROM 
     [sys].[tables] 
) 
SELECT 
    * 
FROM 
    [resultSetCTE] 
ORDER BY 
    [col] 
OFFSET 10 ROWS FETCH NEXT 20 ROWS ONLY;