select 语句

1.into 插入语句blog 建立一个新表，并包含原表的两列数据产品 if OBJECT_ID('tb_jishu') is not null    drop table tb_jishu io select 国家,产品 into tb_jishu from jishutable select * from tb_jishu test 2.[ ],[^]通配符，betweeendate sele

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