INSERT INTO SELECT语句 语句形式为:Insert into Table2(field1,field2,...) select value1,value2,... from Table1 要求目标表Table2必须存在,由于目标表Table2已经存在,所以我们除了插入源表Table1的字 段外,还可以插入常量。例 a表 i...
--试试下面的方法 --2005 DECLARE @n AS BIGINT;SET @n = 1000000;WITH Base AS (SELECT 1 AS n UNION ALL SELECT n + 1 FROM Base WHERE n < CEILING(SQRT(@n))),Expand AS (SELECT 1 AS c FROM B...