sql-server - mssql isnull don't work in outer apply

Question

outer apply 
( 
isnull(
    (select top 1

        sea.Daily,          
        sea.SeasonId    
    from Season as sea      
    where sea.propertyId = prop.PropertyId and FromDate < @FromDate and  ToDate > @ToDate   
    ),
    (select top 1 sea.Daily,            
        sea.SeasonId            
        from Season as sea where sea.propertyId = prop.PropertyId)
    )           
) as pri

Write error Incorrect syntax near ')'. Incorrect syntax near the keyword 'as'.

Answer 1

缺少“选择”？？

outer apply 
( 
SELECT isnull(
    (select top 1

        sea.Daily,          
        sea.SeasonId    
    from Season as sea      
    where sea.propertyId = prop.PropertyId and FromDate < @FromDate and  ToDate > @ToDate   
    ),
    (select top 1 sea.Daily,            
        sea.SeasonId            
        from Season as sea where sea.propertyId = prop.PropertyId)
    )           
) as pri

拉吉