Knowledge Base Category: Development

T-SQL query sample for alpha-numeric characters

This sample uses higher than, less than, ISNumeric, and expresions with Varchar fields.
Declare @esn Table(id int primary key,Num varchar(11))
insert into @esn
values	(1,'123456AB'),

/*Query only Numeric*/
Select *
from @esn 
where ISNUMERIC(Num)=1
/*Query Start with a Letter*/
 Select *
 from @esn 
 where Num > 'A'
 /*End with a letter*/
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