如何更新#temptable

Question

CREATE TABLE #TempProducts (
    Id uniqueidentifier,
    ManufacturerId uniqueidentifier,
    Number varchar(50),
    PresentId uniqueidentifier null)

如何更新 PresentId 字段？我在这方面有不同的错误：

1) 数据库中已有一个名为“#TempProducts”的对象。

UPDATE #TempProducts
SET #TempProducts.PresentId = p.Id
FROM #TempProducts JOIN Products p ON (#TempProducts.ManufacturerId = p.ManufacturerId AND #TempProducts.Number = p.Number)
WHERE #TempProducts.Id <> p.Id

2) 无法绑定多部分标识符“t.PresentId”。

UPDATE #TempProducts
SET t.PresentId = p.Id
FROM #TempProducts t JOIN Products p ON (t.ManufacturerId = p.ManufacturerId AND t.Number = p.Number)
WHERE t.Id <> p.Id

Answer 1

对于第二个错误，请尝试：

UPDATE t
SET t.PresentId = p.Id
FROM #TempProducts t JOIN Products p ON (t.ManufacturerId = p.ManufacturerId AND t.Number = p.Number)
WHERE t.Id <> p.Id