2

我有两个字段，email并且addlEmail. 如果给定的电子邮件地址不在任一字段中，我需要一个仅选择记录的选择。

尝试对两列使用 NOT IN（返回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')"

我已经尝试过 AND 和 OR，它们由于明显的原因不起作用。

为了尝试彻底：

$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

查询应该只返回第 3 行和第 4 行。

感谢您查看，如果您需要进一步说明，请告诉我。

克里斯

编辑：响应发布的答案的示例表：

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);

示例查询（不返回最后一行，它应该）：

SELECT *
  FROM `doubleSelect`
  WHERE Email NOT
  IN (
    'email@email.com'
  )
  AND AddlEmail NOT
  IN (
    'email@email.com'
  )
4

2 回答 2

6

简单地

AND e.Email NOT IN ('test@test.com', 'test2@test.com') 
AND e.AddlEmail NOT IN ('test@test.com', 'test2@test.com')

包括 NULL 值：

SELECT *
FROM `doubleSelect`
WHERE (Email IS NULL or Email NOT IN ('email@email.com'))
      AND (AddlEmail IS NULL or AddlEmail NOT IN ('email@email.com'))
于 2012-08-29T19:49:02.903 回答
2

尝试这个

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'))
于 2012-08-29T20:19:46.383 回答