Question

I want to make an order by stuff using a part of some column.For example,some records of the column user look as below

vip1,vip2,vip21,vip10,vip100

If I do a order by user,the order would be

vip1,vip10,vip100,vip2,vip21

Then how can I make the result as follows

vip1,vip2,vip10,vip21,vip100

Thanks.

Answer 1

What RDBMS?

For SQL Server to get numeric sorting rather than lexicographic sorting it would be something like

ORDER BY CAST(RIGHT(col, LEN(col)-3) AS INT)

For MySQL

ORDER BY CAST(RIGHT(col, LENGTH(col)-3) AS UNSIGNED)

but why are you storing the vip part at all if it is the same for all rows?