Usando datediff en la declaración de MySQL

Question

Esta es mi declaración de SQL que funciona usando datediff:

SELECT SUM(b134_nettpay) AS Total, b134_rmcid, b134_recdate 
FROM  B134HREC 
WHERE datediff (dd, '2006-05-05', getdate()) > 90
GROUP BY b134_rmcid, b134_recdate 
ORDER BY b134_recdate DESC, b134_rmcid

Tengo que sustituir la fecha Hardcoded '2006-05-05' con Max (b134_recdate) de esta manera:

SELECT SUM(b134_nettpay) AS Total, b134_rmcid, b134_recdate 
FROM  B134HREC 
where datediff (dd, MAX(b134_recdate), getdate()) > 90
GROUP BY b134_rmcid, b134_recdate 
ORDER BY b134_recdate DESC, b134_rmcid

Pero me sale este mensaje de error:

  

Un agregado no puede aparecer en la cláusula WHERE a menos que sea en una subconsulta contenida en una cláusula HAVING o una lista de selección, y la columna que se está agregada es una referencia externa.

¿Alguna idea de cómo solucionar mi instrucción SQL?

Answer 1

Trate

SELECT SUM(b134_nettpay) AS Total, b134_rmcid, b134_recdate 
FROM  B134HRE 
where datediff (dd, 
      (select MAX(b134_recdate) from B134HRE)
      , getdate()) > 90
GROUP BY b134_rmcid, b134_recdate 
ORDER BY b134_recdate DESC, b134_rmcid

Answer 2

¿Ha intentado mover esto:

datediff (dd, MAX(b134_recdate), getdate()) > 90

a una cláusula HAVING?

La instrucción SQL sería:

SELECT SUM(b134_nettpay) AS Total, b134_rmcid, b134_recdate FROM B134HRE GROUP BY b134_rmcid, b134_recdate ORDER BY b134_recdate DESC, b134_rmcid HAVING datediff (dd, MAX(b134_recdate), getdate()) > 90

Answer 3

Este código es para el servidor SQL

No estoy seguro de si el MAX deberán ser llenados para toda la tabla:

DECLARE @MaxDate  datetime
SELECT @MaxDate=MAX(b134_recdate) FROM B134HRE
/* if you don't want time you need to trim it from @maxDate*/

    SELECT
        SUM(b134_nettpay) AS Total, b134_rmcid, b134_recdate 
        FROM  B134HRE 
        where datediff (dd, @MaxDate, getdate()) > 90
        GROUP BY b134_rmcid, b134_recdate 
        ORDER BY b134_recdate DESC, b134_rmcid

o por cada grupo:

SELECT
    SUM(b.b134_nettpay) AS Total, b.b134_rmcid, b.b134_recdate 
    FROM  B134HRE   b
        INNER JOIN (SELECT
                        b134_rmcid, b134_recdate , MAX(b134_recdate) AS MaxDate
                        FROM B134HRE
                        GROUP BY b134_rmcid, b134_recdate 
                   ) dt ON b.b134_rmcid=dt.b134_rmcid AND b.b134_recdate=dt.b134_recdate
    where datediff (dd, dt.MaxDate, getdate()) > 90
    GROUP BY b.b134_rmcid, b.b134_recdate 
    ORDER BY b.b134_recdate DESC, b.b134_rmcid

pero se puede dar a estos un intento