ODBC - 調用失敗

Question

我正在使用MS Access 2007並使用鏈接表連接到SQL Server，並且在我使用Access表時正常工作的SQL查詢現在正在獲取上述錯誤消息，現在我正在使用一個鏈接表。我的代碼，failes低於：

Dim rst As Recordset 
Dim db As Database 
Dim sql As String 


If Not (ToDate.Value = "" And FromDate.Value = "") Then 

    Set db = CurrentDb() 

    sql = "SELECT dbo_tblSurvey.SurveyID " & _ 
"FROM dbo_tblSurvey INNER JOIN (dbo_tblInvestigType INNER JOIN dbo_tblInvestigator " &_ 
"ON dbo_tblInvestigType.InvestigNum = dbo_tblInvestigator.InvestigNum)" & _ 
"ON dbo_tblSurvey.SurveyID = dbo_tblInvestigType.SurveyID " & _ 
"WHERE ((" & FromDate & " <= dbo_tblSurvey.RegisDate <= " & ToDate & ")" & _ 
"AND (dbo_tblInvestigType.InvestigType = 'Primary'))" & _ 
"ORDER BY dbo_tblSurvey.SurveyID" 


    Set rst = db.OpenRecordset(sql, dbOpenDynaset, dbSeeChanges) 

我曾與SQL查詢的方式玩了一圈，發現，如果我只是從我的查詢採取了「TODATE」控制，使我的代碼如下所示，然後它工作得很好：

Dim rst As Recordset 
Dim db As Database 
Dim sql As String 


If Not (ToDate.Value = "" And FromDate.Value = "") Then 

    Set db = CurrentDb() 

    sql = "SELECT dbo_tblSurvey.SurveyID " & _ 
"FROM dbo_tblSurvey INNER JOIN (dbo_tblInvestigType INNER JOIN dbo_tblInvestigator " &_ 
"ON dbo_tblInvestigType.InvestigNum = dbo_tblInvestigator.InvestigNum)" & _ 
"ON dbo_tblSurvey.SurveyID = dbo_tblInvestigType.SurveyID " & _ 
"WHERE ((" & FromDate & " <= dbo_tblSurvey.RegisDate)" & _ 
"AND (dbo_tblInvestigType.InvestigType = 'Primary'))" & _ 
"ORDER BY dbo_tblSurvey.SurveyID" 


    Set rst = db.OpenRecordset(sql, dbOpenDynaset, dbSeeChanges) 

的「TODATE」控制是輸入日期爲目的的文本輸入控制，並且是相同的，只是它們被命名爲不同的各種方式的「沒有fromdate」控制。 有任何想法，爲什麼會發生這種情況？感謝任何人都可以提供的幫助。

Answer 1

我認爲代碼生成類似於WHERE條款：

WHERE [one date] <= dbo_tblSurvey.RegisDate <= [another date] 

相反，目的是爲類似的東西...

WHERE [one date] <= dbo_tblSurvey.RegisDate 
     AND dbo_tblSurvey.RegisDate <= [another date] 

或...

WHERE dbo_tblSurvey.RegisDate BETWEEN [one date] AND [another date]