set IDENTITY_INSERT Disp ON
insert into Disp select * from Disp1 insert into Dis
阅读背景：
insert into 插入数据说IDENTITY_INSERT 为 ON 时，才能为表'Disp'中的标识列指定显式值
来源：互联网
set IDENTITY_INSERT Disp ON
insert into Disp select * from Disp1 insert into Dis
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