??????怎么手动生成一个GUID 完成查询

[ysgan]

我写了一条查询语句:

SELECT belongToUser, chineseName, codeGrade, computationType
FROM Goods
WHERE (belongToUser = @belongToUser) OR (belongToUser IS NULL)
ORDER BY codeGrade

现在我想把:belongToUser IS NULL 改为指定的GUID

belongToUser = "00000000-0000-0000-0000-000000000000"
但这种写法是错的....经测试...

有谁能告诉我怎么写吗.?

[九斤半]

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