如何使用SQL和VBS从访问表中获取多个小计?

问题描述

我正在尝试使用Windows中的外部vbs文件vbscript从访问表中获取多个小计.

I am trying to obtain multiple subtotals from an Access Table , using a external vbs file vbscript in Windows.

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......

Further Processing....

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

目前，每次(每1分钟)提供一次CE + PE总计必须确保每个时刻恰好有5条CE记录和5条PE记录，因此总共10条.

Presently it provides the total of CE+PE for each time (every 1 minute)Must ensure exactly 5 CE records and 5 PE records for every time instant , hence total 10.

我们可以对其进行修改以分别提供CE和PE的总计.SELECT Time，SumofCEPrice，SumofPEPrice每1分钟

Can we Modify it to provide totals of CE and PE seperately.SELECT Time , SumofCEPrice , SumofPEPrice for each 1 minute

推荐答案

只需将 Ticker 添加为GROUP BY中的另一个分组变量.另外请考虑以下项目:

Simply add, Ticker as another grouping variable in GROUP BY. Additionally consider below items:

• 任何没有通配符运算符%或*的LIKE表达式都是多余的，应使用等式=.实际上，您甚至可以在这里使用IN()子句；

• Any LIKE expression without a wildcard operator, % or *, is redundant and should use the equality, =. In fact, here you can use even an IN() clause;

应将未聚合的列排除在HAVING之外，并放在WHERE子句中；

Non-aggregated columns should be left out of HAVING and placed in WHERE clause;

使用DAO和ADO连接支持的参数化.

Use parameterization which is supported by DAO and ADO connections.

调整后的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，将参数化与 ADO命令:

' 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

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