与CASE SQL更新查询时

Question

UPDATE Table_Main SET filtered = CASE 
WHEN (subTable.name='MI' 
AND subTable.id= Table_Main."CTYPE") 
THEN false ELSE true END 
from subTable 

查询与子表

Answer 1

UPDATE Table_Main SET filtered = CASE WHEN (subTable.name='CS') 
THEN false ELSE true END 
FROM subTable 
WHERE subTable.id = mainTable."CTYPE" 

Answer 2

的第一行只能听起来像是MERGE语句（因为SQL Server 2008中，我认为有售）工作！

MERGE Table_Main AS Target 
USING subTable as Source 
ON (Source.name = 'MI' AND Source.id = Target."CTYPE") 
WHEN MATCHED 
    THEN UPDATE SET T.filtered = false 
WHEN NOT MATCHED BY SOURCE 
    THEN UPDATE SET T.filtered = true 
OUTPUT $action, Inserted.*, Deleted.*;