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Editorial Team
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Asked: 2026-06-10T11:52:07+00:00

I have two fields, email and addlEmail . I need a select that only

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I have two fields, email and addlEmail. I need a select that only selects the record if a given email address is not in either field.

Attempt at using NOT IN with two columns (returns: Cardinality violation: 1241 Operand should contain 2 column(s):)

SELECT WebUsername, 
  WebPassword, 
  Active, 
  Email, 
  AddlEmail, 
  ShowYear 
FROM Exhibitors e 
WHERE e.Active = '-1' 
AND e.ShowYear = 2013 
AND (e.Email, e.AddlEmail) NOT IN ('test@test.com', 'test2@test.com')"

I have tried AND and OR, they do not work for obvious reasons.

For the sake of trying to be thorough:

$emails = "'email@email.com', 'email2@email.com'";
// example table data for 2 fields in question
Row | Email              |   AddlEmail
1   | email@email.com    |   email3@email.com
2   | email4@email.com   |   email2@email.com
3   | email5@email.com   |   null
4   | email6@email.com   |   email7@email.com

The query should only return rows 3 and 4.

Thanks for taking a look, and please let me know if you need further clarification.

Chris

EDIT:
Sample table in response to answer posted:

CREATE TABLE `doubleSelect` (
  `Email` varchar(255) DEFAULT NULL,
  `AddlEmail` varchar(255) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

INSERT INTO `doubleSelect` (`Email`, `AddlEmail`) VALUES
  ('email@email.com', 'email2@email.com'),
  ('email2@email.com', 'email3@email.com'),
  ('email4@email.com', 'email5@email.com'),
  ('email6@email.com', 'email@email.com'),
  (NULL, 'email@email.com'),
  ('email2@email.com', NULL);

Sample Query (does not return the last row, and it should):

SELECT *
  FROM `doubleSelect`
  WHERE Email NOT
  IN (
    'email@email.com'
  )
  AND AddlEmail NOT
  IN (
    'email@email.com'
  )
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1 Answer

  1. Editorial Team

    Try this 

    select * 
from Exhibitors 
where (email is null or email not in('email@email.com', 'email2@email.com'))  
and   (addlEmail is null or addlEmail not in ('email@email.com', 'email2@email.com'))
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