錯誤1241操作數應該包含1列子查詢weekday

Question

我試圖執行一個mysql查詢，顯示星期一到星期天在這個星期內做出的產品數量（在這個例子中代碼中只有Lunes和Martes ）

我設法用一個單一的ID執行查詢，但是當我想顯示每個人時，它給了我錯誤。

select formatopeso.tipo_formato, (select sum(cantidad) 
from previsionpedidos 
where id_formatopeso = 1 and WEEKDAY(fecha) = 0) as Lunes, 
(select sum(cantidad) fromprevisionpedidos where id_formatopeso = 1 and WEEKDAY(fecha) = 1) 
as Martes, 
from previsionpedidos inner join formatopeso on 
previsionpedidos.id_formatopeso = formatopeso.id_formatopeso 
where formatopeso.id_formatopeso= 1 and yearweek(fecha,1) = yearweek(now()) 
group by formatopeso.tipo_formato; 

我試試這個，但我有一個錯誤ERROR 1241（21000）：操作數應包含1列（S）

select formatopeso.tipo_formato, 
(select sum(cantidad) from previsionpedidos inner join 
formatopeso on previsionpedidos.id_formatopeso = formatopeso.id_formatopeso 
where WEEKDAY(fecha) = 0) as lunes, 
(select sum(cantidad),fecha from previsionpedidos 
inner join formatopeso on previsionpedidos.id_formatopeso = 
formatopeso.id_formatopeso 
where WEEKDAY(fecha) = 1) as Martes from previsionpedidos 
inner join formatopeso on previsionpedidos.id_formatopeso = formatopeso.id_formatopeso 
where yearweek(fecha,1) = yearweek(now()) 
group by formatopeso.tipo_formato; 

感謝

我需要表現出類似的結果：

+--------------+-------+--------+ 
| tipo_formato | Lunes | Martes | 
+--------------+-------+--------+ 
| 12Ø 70gr  | 175 | 250 | 
| 20Ø 150gr | NULL| NULL | 
| 22Ø 180gr | NULL| 125 | 
| 25Ø 220gr | 200 | NULL | 
| 28Ø 220gr | 175 | 250 | 
+--------------+-------+--------+ 

Answer 1

您在FROM之前有過多逗號。

SELECT formatopeso.tipo_formato, 
    (SELECT SUM(cantidad) 
    FROM previsionpedidos 
    WHERE id_formatopeso = 1 
     AND WEEKDAY(fecha) = 0 
    ) as Lunes, 
    (SELECT SUM(cantidad) 
    FROM previsionpedidos 
    WHERE id_formatopeso = 1 
     AND WEEKDAY(fecha) = 1 
    ) as Martes 
FROM previsionpedidos 
INNER JOIN formatopeso on previsionpedidos.id_formatopeso = formatopeso.id_formatopeso 
WHERE formatopeso.id_formatopeso=1 
    AND yearweek(fecha,1) = yearweek(now()) 
GROUP BY formatopeso.tipo_formato;