查询不使用WHERE子句更新DB

Question

以下查询未更新;如果我们有WHERE子句。

UPDATE dbo.GBH_OCCU_FULL_Process 
SET ShortDescription= b.ShortDescription 
FROM dbo.GBH_OCCU  as b 
INNER JOIN dbo.GBH_OCCU_FULL_Process AS a ON a.[OccurrenceID] = b.[OccurrenceID]
WHERE a.[OccurrenceID] = '12-3456'