获取最小可用id语句

获取最小可用id语句

 

其中SELECT rownum id from dual connect by rownum<=9

 

改成相应的最小值最大值区间，比如：www.zzzyk.com  

 

SELECT rownum+rpad('2010',7,'0') id from dual connect by rownum<=rpad('2010',7,'9')

 

Sql代码  

select id from (SELECT rownum id from dual connect by rownum<=9) a where not exists
(select id from tab where id= a.id)