select * into dept2 from dept

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select * into dept2 from dept
select * into dept2 from dept

select * into dept2 from dept
根据dept的表结构,自动创建同构的表dept2,但索引不自动构建,然后把dept中数据也拷贝过去.
经常用到的是后面还加上where 1 1,这样的话,就仅仅创建表,而不复制数据.

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