如何从结果集输出中隐藏列标题？

我有一块SQL查询返回的结果与email_address列名在上段设置是这样的：如何从结果集输出中隐藏列标题？

| email_adress | 
|-------------------| 
| [email protected] | 
| [email protected] |

我需要什么，而不是无的第一行设置类似的结果：

| [email protected] | 
| [email protected] |

这里是我的查询：

SELECT email_address 
FROM company_digital 
WHERE email_address IS NOT NULL 
AND email_address IS NOT NULL 
AND hash_id >= 700 
AND hash_id < 800 
UNION 
SELECT email_address_2 
FROM company_digital 
WHERE email_address_2 IS NOT NULL 
AND email_address_2 IS NOT NULL 
AND hash_id >= 700 
AND hash_id < 800 
UNION 
SELECT email_address_3 
FROM company_digital 
WHERE email_address_3 IS NOT NULL 
AND email_address_3 IS NOT NULL 
AND hash_id >= 700 
AND hash_id < 800;

来源

2017-10-04 Balaji Ravichandran

你想跳过第一个结果行或只显示没有列标题的结果？ – tommyO

是的，列标题 –

这不是一个SQL语言问题。这将取决于具体使用哪个SQL客户端来运行查询。哪一个？您应该考虑在您的问题中添加该标签。 – tommyO

假设你的意思列标题，然后给第一个字段在查询的别名，如：

select email_address AS Whatever 
from company_digital 
where email_address is not null 
and email_address is not null 
and hash_id >=700 and hash_id <800 
union 
select email_address_2 
from company_digital 
where email_address_2 is not null 
and email_address_2 is not null 
and hash_id >=700 and hash_id <800 
union 
select email_address_3 
from company_digital 
where email_address_3 is not null 
and email_address_3 is not null 
and hash_id >=700 and hash_id <800;

这将输出：

| Whatever | 
_____________ 
[email protected] 

[email protected] 
_________________

或者

select email_address AS ' ' 
from company_digital 
where email_address is not null 
and email_address is not null 
and hash_id >=700 and hash_id <800 
union 
select email_address_2 
from company_digital 
where email_address_2 is not null 
and email_address_2 is not null 
and hash_id >=700 and hash_id <800 
union 
select email_address_3 
from company_digital 
where email_address_3 is not null 
and email_address_3 is not null 
and hash_id >=700 and hash_id <800;

这将输出：

| | 
_____________ 
[email protected] 

[email protected] 
_________________

编辑清除代码：

SELECT email_address AS ' ' 
FROM company_digital 
WHERE email_address IS NOT NULL 
AND hash_id BETWEEN 700 AND 800 
UNION 
SELECT email_address_2 
FROM company_digital 
WHERE email_address_2 IS NOT NULL 
AND hash_id BETWEEN 700 AND 800 
UNION 
SELECT email_address_3 
FROM company_digital 
WHERE email_address_3 IS NOT NULL 
AND hash_id BETWEEN 700 AND 800;

，或者根据您的数据......

SELECT CASE WHEN email_address IS NOT NULL 
      THEN email_address 
      WHEN email_address_2 IS NOT NULL 
      THEN email_address_2 
      WHEN email_address_3 IS NOT NULL 
      THEN email_address_3 
     END AS ' ' 
FROM company_digital 
WHERE hash_id BETWEEN 700 AND 800

来源

2017-10-04 13:57:43 Matt

标题垂直条和破折号仍然存在，所以我没有看到你的回答如何抑制列标题。 – RonJohn

如何从结果集输出中隐藏列标题？

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