Actualizar registros en la tabla de CTE

Question

Tengo el siguiente CTE que me dará el DocTotal para la factura completa.

;WITH CTE_DocTotal 
AS 
(
    SELECT SUM(Sale + VAT) AS DocTotal 
    FROM PEDI_InvoiceDetail 
    GROUP BY InvoiceNumber 
) 

UPDATE PEDI_InvoiceDetail 
SET DocTotal = CTE_DocTotal.DocTotal 

Ahora, con este resultado que quieren entrar en la columna de valor en el interior DocTotal PEDI_InvoiceDetail.

Sé que no va a funcionar y sé que me falta algo, ¿qué es?

Answer 1

actualizaciones que realice en el CTE será en cascada a la tabla de origen.

He tenido que adivinar un poco su esquema, pero algo así debería funcionar.

;WITH T AS 
( SELECT InvoiceNumber, 
      DocTotal, 
      SUM(Sale + VAT) OVER(PARTITION BY InvoiceNumber) AS NewDocTotal 
    FROM PEDI_InvoiceDetail 
) 
UPDATE T 
SET  DocTotal = NewDocTotal 

Answer 2

No es necesario un CTE para este

UPDATE PEDI_InvoiceDetail 
SET 
    DocTotal = v.DocTotal 
FROM 
    PEDI_InvoiceDetail 
inner join 
(
    SELECT InvoiceNumber, SUM(Sale + VAT) AS DocTotal 
    FROM PEDI_InvoiceDetail 
    GROUP BY InvoiceNumber 
) v 
    ON PEDI_InvoiceDetail.InvoiceNumber = v.InvoiceNumber 

Answer 3

WITH CTE_DocTotal (DocTotal, InvoiceNumber) 
AS 
(
    SELECT InvoiceNumber, 
      SUM(Sale + VAT) AS DocTotal 
    FROM PEDI_InvoiceDetail 
    GROUP BY InvoiceNumber 
)  
UPDATE PEDI_InvoiceDetail 
SET PEDI_InvoiceDetail.DocTotal = CTE_DocTotal.DocTotal 
FROM CTE_DocTotal 
INNER JOIN PEDI_InvoiceDetail ON ... 

Answer 4

Pruebe la siguiente consulta:

;WITH CTE_DocTotal 
AS 
(
    SELECT SUM(Sale + VAT) AS DocTotal_1 
    FROM PEDI_InvoiceDetail 
    GROUP BY InvoiceNumber 
) 

UPDATE CTE_DocTotal 
SET DocTotal = CTE_DocTotal.DocTotal_1