如何合并2个SQL查询

Question

我有2个查询我想要合并为1个结果（可能是2个）。

我有什么：

表records：

 id | action

我想要结果：

最后添加行的
1. optGroup 3行
2. optGroup of 3 rows for most using action msg

所以，我试过了：



但是当我试图通过服务器端ASP页面显示时：

sql = "SELECT TOP 3 [action],COUNT([id]) as pocet "  & vbcrlf &_
    "FROM [IT].[dbo].[records] "  & vbcrlf &_
    "GROUP BY [action] ORDER BY pocet desc; "  & vbcrlf &_
"SELECT TOP 3 [action] "  & vbcrlf &_
    "FROM [IT].[dbo].[records] "  & vbcrlf &_
    "WHERE [email_numbers] <= 0  "  & vbcrlf &_
    "GROUP BY [inputdate] desc"

使用Server.CreateObject("ADODB.Recordset")

并尝试：

response.write "<optgroup label='3 most used'>"
while not rs.EOF
    response.write "<option value=''>" & rs("action") & "</option>"
    rs.movenext
wend    
response.write "</optgroup><optgroup label='3 last records'>"
while not rs.EOF
    response.write "<option value=''>" & rs("action") & "</option>"
    rs.movenext
wend
response.write "</optgroup>"

告诉我这个结果：

SELECT TOP 3 [action],COUNT([id]) as c 
FROM [IT].[dbo].[records] 
GROUP BY [action] 
ORDER BY c desc; 

SELECT TOP 3 [action] 
FROM [IT].[dbo].[records] 
WHERE [email_numbers] <= 0 
GROUP BY [inputdate] desc

Microsoft OLE DB Provider for SQL Server error '80040e14'

Incorrect syntax near the keyword 'desc'.

/get.asp, line 1024 

ADODB.RecordSet返回结果没有问题，SQL查询有问题或使用两次：while not rs.EOF

Answer 1

您可以在查询之间使用联合

select * from  1
union [all]
select * from 2

Answer 2

问题在于SQL查询

SELECT TOP 3 [action] 
FROM [IT].[dbo].[records] 
WHERE [email_numbers] <= 0 
GROUP BY [inputdate] desc

您只能将desc关键字与ORDER BY一起使用，而不能与GROUP BY

一起使用

Answer 3

您查询错误。您无法在DESC上使用GROUP BY键工作，删除它并且查询将有效：

SELECT TOP 3 [action],COUNT([id]) as c 
FROM [IT].[dbo].[records] 
GROUP BY [action] 
ORDER BY c desc; 

SELECT TOP 3 [action] 
FROM [IT].[dbo].[records] 
WHERE [email_numbers] <= 0 
GROUP BY [inputdate]

接下来，当你到达第一个记录集的EOF时，你需要继续下一个记录集：

Set rs = rs.NextRecordset

所以你的代码是：

response.write "<optgroup label='3 most used'>"
while not rs.EOF
    response.write "<option value=''>" & rs("action") & "</option>"
    rs.movenext
wend    
response.write "</optgroup><optgroup label='3 last records'>"

Set rs = rs.NextRecordset

while not rs.EOF
    response.write "<option value=''>" & rs("action") & "</option>"
    rs.movenext
wend
response.write "</optgroup>"