如何使用 SQL 和 VBS 从 Access Table 获取多个小计？

Question

我正在尝试使用 Windows 中的外部 vbs 文件 vbscript 从 Access Table 获取多个小计。

mySQL = "SELECT [Data.Time],"& Quantity &"*Sum([Data.Price]) AS 
SumOfPrice FROM Data WHERE (  ( [Data.Ticker] Like '"& CE1 &"'  
Or [Data.Ticker] Like '"& CE2 &"' Or [Data.Ticker] Like '"& CE3 &"' 
Or [Data.Ticker] Like '"& CE4 &"' Or [Data.Ticker] Like '"& CE5 &"' 
Or [Data.Ticker] Like '"& PE1 &"' Or [Data.Ticker] Like '"& PE2 &"' 
Or [Data.Ticker] Like '"& PE3 &"' Or [Data.Ticker] Like '"& PE4 &"' 
Or [Data.Ticker] Like '"& PE5 &"' 
 ) AND ([Data.DateTr]=#"& DateIn &"#))
 GROUP BY [Data.Time] HAVING [Data.Time] > #"& startTime(i) &"# and (((Count([Data.Ticker]))= 10))"

进一步处理....

objRecordSet2.Open mySQL,objConnection, adOpenStatic, adLockOptimistic
objRecordSet2.MoveFirst     
Do Until objRecordSet2.EOF
    If objRecordSet2.Fields.Item(1) > testvalue

目前提供每次（每1分钟）的CE+PE总和必须确保每个时刻正好有 5 条 CE 记录和 5 条 PE 记录，因此总共 10.

我们能否修改它以单独提供 CE 和 PE 的总数。 SELECT 每 1 分钟时间，SumofCEPrice，SumofPEPrice

Answer 1

您可以通过将 select 语句更改为：

来使用条件聚合

"SELECT [Data.Time]," & Quantity & "*Sum(iif([Data.Ticker] Like '" & CE1 & "' or [Data.Ticker] Like '" & CE2 & "' or [Data.Ticker] Like '" & CE3 & "' or [Data.Ticker] Like '" & CE4 & "' or [Data.Ticker] Like '" & CE5 & "',[Data.Price],0)) AS SumofCEPrice "

使用以类似方式构建的 SumofPEPrice 列。

Answer 2

只需添加 Ticker 作为 GROUP BY 中的另一个分组变量。另外考虑以下项目：

任何没有通配符 % 或 * 的 LIKE 表达式都是多余的，应该使用等式 =。事实上，在这里您甚至可以使用 IN() 子句；
非聚合列应从 HAVING 中删除并放在 WHERE 子句中；
使用 DAO 和 ADO 连接支持的参数化。

调整后SQL字符串

"SELECT [Data.Time], [Data.Ticker], "& Quantity &" * Sum([Data.Price]) AS SumOfPrice " & _
" FROM Data " & _
" WHERE ( " & _
"           ( [Data.Ticker] = '"& CE1 &"'  " & _
"            OR [Data.Ticker] = '"& CE2 &"' OR [Data.Ticker] = '"& CE3 &"' " & _
"            OR [Data.Ticker] = '"& CE4 &"' OR [Data.Ticker] = '"& CE5 &"' " & _
"            OR [Data.Ticker] = '"& PE1 &"' OR [Data.Ticker] = '"& PE2 &"' " & _
"            OR [Data.Ticker] = '"& PE3 &"' OR [Data.Ticker] = '"& PE4 &"' " & _
"            OR [Data.Ticker] = '"& PE5 &"' " & _
"           ) " & _
"           AND ([Data.DateTr] = #" & DateIn & "#)" & _
"           AND ([Data.Time] > #" & startTime(i) & "#) " & _
"       ) " & _
" GROUP BY [Data.Time], [Data.Ticker] " & _
" HAVING Count(([Data.Ticker]) = 10)"

或者，使用参数化 ADO Command:

' PREPARED STATEMENT (NO DATA)
mySQL = "SELECT [Data.Time], [Data.Ticker], ? * Sum([Data.Price]) AS SumOfPrice " & _
        " FROM Data " & _
        " WHERE ([Data.Ticker] IN (?, ?, ?, ?, ?,  " & _
        "                          ?, ?, ?, ?, ?)) " & _
        "   AND ([Data.DateTr] = ?) " & _
        "   AND ([Data.Time] > ?) " & _
        " GROUP BY [Data.Time], [Data.Ticker] " & _
        " HAVING Count(([Data.Ticker]) = 10)"

Set objCmd = New ADODB.Command

With objCmd
   .ActiveConnection = objConnection
   .CommandText = mySQL
   .CommandType = adCmdText

   ' BIND PARAMETERS CORRESPONDING TO ORDER OF ? PLACEMARKERS
   .Parameters.Append .CreateParameter("pmQty", adInteger, adParamInput, , Quantity)

   For Each var In Array(CE1, CE2, CE3, CE4, CE5, PE1, PE2, PE3, PE4, PE5)
       .Parameters.Append .CreateParameter(, adVarChar, adParamInput, 50, var)
   Next var

   .Parameters.Append .CreateParameter("pmDateIn", adDate, adParamInput, , DateIn)
   .Parameters.Append .CreateParameter("pmStartTime", adDBTime, adParamInput, , startTime(i))

   ' BUILD RECORDSET FROM EXECUTION
   Set objRecordSet2 = .Execute
End With

objRecordSet2.MoveFirst     
Do Until objRecordSet2.EOF
    If objRecordSet2.Fields.Item(1) > testvalue

如何使用 SQL 和 VBS 从 Access Table 获取多个小计？

How to obtain Multiple subtotals using SQL and VBS from Access Table?

sql

vbscript

ms-access