如何使用加入寫入更新在哪裏條款

Question

我試圖運行此SQL來更新表。問題是我需要一個連接才能更新正確的記錄。這是我想出迄今：

Update UserProfile 
    set UserProfile.PropertyValue = 'Test' 
    join ProfilePropertyDefinition 
     on ProfilePropertyDefinition.Id = UserProfile.PropertyDefinitionId 
    where UserProfile.UserId = 11 
    and ProfilePropertyDefinition.PortalID = 0 
    and ProfilePropertyDefinition.PropertyName = 'Address1' 
    and ProfilePropertyDefinition.PropertyCategory = 'Address' 

這是我得到的消息：關鍵字「加入」附近

不正確的語法。

Answer 1

你就要成功了，你忘了from條款：

Update UserProfile 
    set UserProfile.PropertyValue = 'Test' 
    from UserProfile 
    join ProfilePropertyDefinition 
     on ProfilePropertyDefinition.Id = UserProfile.PropertyDefinitionId 
    where UserProfile.UserId = 11 
    and ProfilePropertyDefinition.PortalID = 0 
    and ProfilePropertyDefinition.PropertyName = 'Address1' 
    and ProfilePropertyDefinition.PropertyCategory = 'Address' 

Answer 2

Update UserProfile 
    set UserProfile.PropertyValue = 'Test' 
from UserProfile 
    join ProfilePropertyDefinition 
     on ProfilePropertyDefinition.Id = UserProfile.PropertyDefinitionId 
    where UserProfile.UserId = 11 
    and ProfilePropertyDefinition.PortalID = 0 
    and ProfilePropertyDefinition.PropertyName = 'Address1' 
    and ProfilePropertyDefinition.PropertyCategory = 'Address' 

你不得不重複表from子句中更新 - 即使這IOF語法看起來有點怪。

Answer 3

你缺少FROM子句：

Update a 
set PropertyValue = 'Test' 
FROM UserProfile as a 
     inner join ProfilePropertyDefinition as b 
     on b.Id = a.PropertyDefinitionId 
where a.UserId = 11 
     and b.PortalID = 0 
     and b.PropertyName = 'Address1' 
     and b.PropertyCategory = 'Address';