sql - '.'附近的语法不正确。在更新变量表时

Question

更新表格变量时出现问题。我已经声明了它，但是当我运行整个查询时，我得到了这个错误:

Incorrect syntax near '.'.

而且我似乎无法解决问题...

UPDATE @List 
SET nrID = CASE 
              WHEN nrID IS NULL 
                 THEN t1.nrID 
                 ELSE nrID 
           END 
FROM @List 
INNER JOIN table1 t1 ON @List.PNr = t1.PNr
INNER JOIN table2 t2 ON t1.n nrPNr = t2.nrPNr
WHERE t1.PNr = t2.PNr AND t2.Isactive = 0

Answer 1

UPDATE List 
SET List.nrID = t1.nrID
FROM @List AS List
INNER JOIN table1 t1 ON List.nrID = t1.nrID
INNER JOIN table2 t2 ON t1.nrID = t2.nrID
WHERE t1.nrID = t2.nrID AND t2.Isactive = 0

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