White patches on the tongue of a tobacco user could be a sign the person is at risk of developing cancer. In some cases, a white tongue can be treated by practicing good oral hygiene. Many conditions causing white tongue can be easily treated with good oral hygiene or avoiding tobacco.hite patches on the tongue of a tobacco user could be a sign the person is at risk of developing cancer. In some cases, a white tongue can be treated by practicing good oral hygiene. Many conditions causing white tongue can be easily treated with good oral hygiene or avoiding tobacco.
Copying a spell only counts as casting it if the spell or ability that copies it specifically says it is to be treated as if it were cast. In general a spell counts as being cast only when it is cast from your hand or the spell or ability allowing you to utilize it specifically uses the terminology cast.
If the varchar values are numeric then the queries with do the implicit casting without your explicit casting in SQL queries. ex. if the column is varchar(20) and the values inside are numbers, they may appear as 25 for us a developer, but will bimplicitly converted into int. But if some row in the column contained a value say 25a, then there would be an exception raised. So if you are not that sure of the values, you are left with two options. 1. Convert(int,  column name) 2. Cast( column name as int) ( not sure of cast syntax) Let me know if I am unclear.