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Editorial Team
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Asked: 2026-05-26T17:57:50+00:00

I have 2 select statements: SELECT DISTINCT Email FROM dbo.Customers WHERE (Email IS NOT

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I have 2 select statements:

SELECT DISTINCT Email
FROM         dbo.Customers
WHERE     (Email IS NOT NULL) 
AND (Email LIKE '%@%') 
AND (RIGHT(Email, 4) IN ('.net', '.com', '.org')) 
AND (Email NOT LIKE '%@UniformCity.com') 
AND (Email NOT LIKE '%@LifeUniform.com') 
AND (CHARINDEX('.',Email) <> 1)
AND (RIGHT(RTRIM(Email), 1) <> '.') AND (LEFT(LTRIM(Email), 1) <> '@') 
AND (Email not Like '%[`:;_*-,^[^]()+%\/=#-]%' escape '^') order by Email

AND 

SELECT  replace(replace(
replace(
replace(EmailOptOut,'"','')
, ',held','')
, ',unsub','')
, ',confirm','') 
as CleanEmail
FROM [LifeMail].[dbo].[EmailOptOuts]

I only want to select the emails from the Customers table, THAT ARE NOT in the EmailOptOuts table. What’s the best way to achieve this? I thought about using cursors and looping…

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1 Answer

  1. Editorial Team

    I’m going to put these tables into temp tables, but you could combine the queries if you desired.

    SELECT DISTINCT Email
INTO    #tCustomersEmail
FROM    dbo.Customers
WHERE   ( Email IS NOT NULL )
    AND ( Email LIKE '%@%' )
    AND ( RIGHT(Email, 4) IN ( '.net', '.com', '.org' ) )
    AND ( Email NOT LIKE '%@UniformCity.com' )
    AND ( Email NOT LIKE '%@LifeUniform.com' )
    AND ( CHARINDEX('.', Email) <> 1 )
    AND ( RIGHT(RTRIM(Email), 1) <> '.' )
    AND ( LEFT(LTRIM(Email), 1) <> '@' )
    AND ( Email NOT LIKE '%[`:;_*-,^[^]()+%\/=#-]%' ESCAPE '^' )
ORDER BY Email

SELECT  REPLACE(REPLACE(REPLACE(REPLACE(EmailOptOut, '"', ''), ',held', ''),',unsub', ''), ',confirm', '') AS CleanEmail
INTO #tOptOuts
FROM    [LifeMail].[dbo].[EmailOptOuts]

SELECT Email
FROM #tCustomersEmail AS tce
WHERE Email NOT IN (SELECT CleanEmail FROM #tOptOuts AS too)
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