cast(A as int) as A, 字符串 ---> int cast(B as int) as B, 字符串 ---> int convert(nvarchar(255),C) as C, int ---> 字符串 convert(nvarchar(255),D) as D, int ---> 字符串 convert (nvarchar(255) , E) as E int ---> 字符串
cast(A as int) as A, 字符串 ---> int cast(B as int) as B, 字符串 ---> int convert(nvarchar(255),C) as C, int ---> 字符串 convert(nvarchar(255),D) as D, int ---> 字符串 convert (nvarchar(255) , E) as E int ---> 字符串
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