By: Sumit Salunkhe

Sumit Salunkhe — Fri, 12 Apr 2019 06:09:10 +0000

In reply to HIC. select emailname ,CASE WHEN emailname like '%[a-z,0-9]@[a-z]%.com' then 'true' else 'false ' end as True_Email from tbl_emails

By: Marcel Hofman

Marcel Hofman — Wed, 10 Apr 2019 08:31:23 +0000

Following the criteria for a correct email address
select emailname
,
CASE WHEN
RIGHT(emailname, 4) = ‘.com’
AND emailname LIKE ‘%@%’
AND patindex(‘[a-zA-Z0-9]%’, emailname) 0
AND patindex(‘[-]%’, emailname) 1
AND patindex(‘[_]%’, emailname) 1
AND patindex(‘[.]%’, emailname) 1
AND patindex(‘[0-9]%’, emailname) 1
AND patindex(‘[0-9]%’, emailname) 1
AND emailname NOT LIKE ‘%%’
AND emailname NOT LIKE ‘%(%’
AND emailname NOT LIKE ‘%)%’
AND emailname NOT LIKE ‘%[%’
AND emailname NOT LIKE ‘%]%’
AND emailname NOT LIKE ‘%;%’
AND emailname NOT LIKE ‘%,%’
AND emailname NOT LIKE ‘%\%’
AND emailname NOT LIKE ‘%@%@%’
THEN ‘true’ ELSE ‘false’ END AS IsCorrectEmail
FROM tbl_emails

By: HIC

HIC — Sun, 07 Apr 2019 06:56:00 +0000

select email,
case when email like ‘%_@_%._%’ then 1 else 0 end
from emails

Comments on: SQL Puzzle: SQL Advance Query – Do basic validation of Email Address

By: Sumit Salunkhe

By: Marcel Hofman

By: HIC