select '2012-12-05','2012-12-06','2012-12-07','2012-12-08' f
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select '2012-12-05','2012-12-06','2012-12-07','2012-12-08' from DUAL,如何把这种一行转为一列.
主要用意就是把几个指定的字符串弄成一列.
主要用意就是把几个指定的字符串弄成一列.
可以这样
select '2012-12-05' from DUAL
union all
select '2012-12-06' from DUAL
union all
select '2012-12-07' from DUAL
union all
select '2012-12-08' from DUAL
select '2012-12-05' from DUAL
union all
select '2012-12-06' from DUAL
union all
select '2012-12-07' from DUAL
union all
select '2012-12-08' from DUAL
select CONVERT(varchar, getdate(), 120 ) 2004-09-12 11:06:08
SELECT
已知f(x)=sin ax(a>0)的最小正周期为12 求a的值 求f(1)+f(2)+f(3)+...+f(2012)
Direction:Select the most appropriate word to complete the f
select * from (select * from 表名) 这样的语法中括号里的查询语句是什么意思.为什么不直接f
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