To find if the column is notnull, if the column contains ( , ,'',-), if the column is valid decimal(15) in a single query - topic by sayaksitex

we want a single query for checking 1. if the column is null or not 2. if it is not null then we should check that it doesnt contain  , - ''  3. if the above 2 cases are passed , we want to check if it is a valid decimal(15) or not   thanks