7. 为变量赋值的语句中，错误的是（）。 - 查题网

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国家开放大学 / 数据库应用技术

7. 为变量赋值的语句中，错误的是（）。

A.
SET @X = 10

B.
SELECT @X = 10

C.
SET @X = 10 + 10

D.
SET @X = 10 + 'A'

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数据库应用技术

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