SQL更新，选择带除法和内部联接的事例

我尝试了很多方法，但都没有成功，只有在t2中t1.total和t1.quantity之间的除法在t2中不在范围内时，我才需要更新t1

我的代码：

UPDATE t1
SET t1.Code_142 = 'OK' 
SELECT CASE WHEN quantity = 0 THEN NULL ELSE TOTAL/quantity END AS q
FROM Servicios_de_control_de_calidad_de_agua_potable as t1
INNER JOIN Con_A as t2 ON t1.ID = t2.ID
WHERE t1.q BETWEEN t2.Mins AND t2.Maxs

---

关于

您可以按照以下步骤进行尝试，希望对您有所帮助

UPDATE t1
SET t1.Code_142 = 'OK' 
FROM Servicios_de_control_de_calidad_de_agua_potable as t1
INNER JOIN Con_A as t2 ON t1.ID = t2.ID
WHERE (CASE WHEN quantity = 0 THEN NULL ELSE TOTAL/quantity END) BETWEEN t2.Mins AND t2.Maxs

---

您可以按以下方式尝试，希望对您有所帮助

UPDATE t1
SET t1.Code_142 = 'OK' 
FROM Servicios_de_control_de_calidad_de_agua_potable as t1
INNER JOIN Con_A as t2 ON t1.ID = t2.ID
WHERE (CASE WHEN quantity = 0 THEN NULL ELSE TOTAL/quantity END) BETWEEN t2.Mins AND t2.Maxs

---

您正在查找的查询应如下所示

UPDATE t1
SET t1.Code_142 = 'OK' 
FROM Servicios_de_control_de_calidad_de_agua_potable  t1
INNER JOIN Con_A  t2 ON t1.ID = t2.ID
WHERE CASE WHEN quantity = 0 THEN t2.Mins-1 ELSE TOTAL/quantity END BETWEEN t2.Mins AND t2.Maxs

---

您正在查找的查询应如下所示

UPDATE t1
SET t1.Code_142 = 'OK' 
FROM Servicios_de_control_de_calidad_de_agua_potable  t1
INNER JOIN Con_A  t2 ON t1.ID = t2.ID
WHERE CASE WHEN quantity = 0 THEN t2.Mins-1 ELSE TOTAL/quantity END BETWEEN t2.Mins AND t2.Maxs

---

显然，我无法测试此代码，但您可能需要：

UPDATE t1
SET t1.Code_142 = 'OK',
    q = CASE WHEN quantity = 0 THEN NULL ELSE TOTAL/quantity END 
FROM Servicios_de_control_de_calidad_de_agua_potable as t1
INNER JOIN Con_A as t2 ON t1.ID = t2.ID
WHERE t1.q BETWEEN t2.Mins AND t2.Maxs

---

显然，我无法测试此代码，但您可能需要：

UPDATE t1
SET t1.Code_142 = 'OK',
    q = CASE WHEN quantity = 0 THEN NULL ELSE TOTAL/quantity END 
FROM Servicios_de_control_de_calidad_de_agua_potable as t1
INNER JOIN Con_A as t2 ON t1.ID = t2.ID
WHERE t1.q BETWEEN t2.Mins AND t2.Maxs

---

我认为你不能在更新条款中选择，你能提供更多细节吗？表结构和预期结果。我认为你不能在更新条款中选择，你能提供更多细节吗？表结构和预期结果。