我有一个需要循环的CSV，获取每一行的ID，然后遍历数据库，将csvID与每个dbID进行比较。如果数据库中的ID 存在，它将使用CSV中的相关信息更新记录。
但是，我陷入无休止的循环（从我能说的话），我不知道如何摆脱它。
Option Explicit
Server.ScriptTimeout = 2147483647
dim conn, rs, updatedUser, updatedDate, filePath
dim deactivateSQL, csvConn, connCSV, csv, sql
dim dbID, dbSSN, dbLast, dbFirst, dbMiddle, dbGender, dbScl, dbCls
dim csvID, csvSSN, csvLast, csvFirst, csvMiddle, csvGender
dim csvScl, csvCls, csvGrd, csvHrm
updatedUser = Request.Cookies("UserN")
updatedDate = date() & " " & time()
filePath = "\path\to\file"
' Connect to Students.CSV
csvConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" &_
Server.MapPath(filePath) &_
";Extended Properties='text;HDR=no;FMT=Delimited';"
Set connCSV = Server.CreateObject("ADODB.Connection")
connCSV.Open csvConn
Set csv = Server.CreateObject("ADODB.recordset")
csv.open "SELECT * FROM Students.csv", connCSV
temp = csv.RecordCount
redim toAdd(temp)
' Begin looping through Students.csv
do until csv.eof
' Get Students.csv Column Values
' please disregard the "replace" stuff for now
csvID = replace(replace(csv.fields(0), " ", ""), "'", "")
csvSSN = replace(replace(csv.fields(1), " ", ""), "'", "")
csvLast = replace(replace(csv.fields(2), " ", ""), "'", "")
csvFirst = replace(replace(csv.fields(3), " ", ""), "'", "")
csvMiddle = replace(replace(csv.fields(4), " ", ""), "'", "")
csvGender = replace(replace(csv.fields(5), " ", ""), "'", "")
csvScl = replace(replace(csv.fields(6), " ", ""), "'", "")
csvGrd = replace(replace(csv.fields(7), " ", ""), "'", "")
csvHrm = replace(replace(csv.fields(8), " ", ""), "'", "")
' Connect to database
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "E:/path/to/file/database.mdb"
set rs=Server.CreateObject("ADODB.Recordset")
rs.open "SELECT * FROM tblStudent", conn
' Begin looping through tblStudents
do until rs.eof
' Get tblStudents.StudentID
dbID = rs.fields("StudentID")
dbSSN = rs.fields("SSN")
dbLast = rs.fields("LastName")
dbFirst = rs.fields("FirstName")
dbMiddle = rs.fields("MiddleName")
dbGender = rs.fields("Gender")
dbScl = rs.fields("School")
dbCls = rs.fields("Class")
if dbID = csvID then
' if dbID matches csvID,
' update tblStudents with the new CSV data
sql = "UPDATE tblStudent SET " &_
"Active='Yes' AND " &_
"SSN='" & csvSSN & "' AND " &_
"LastName='" & csvlast & "' AND " &_
"FirstName='" & csvFirst & "' AND " &_
"MiddleName='" & csvMiddle & "' AND " &_
"Gender='" & csvGender & "' AND " &_
"School='" & csvScl & "' AND " &_
"GradeLvl='" & csvGrd & "' AND " &_
"HomeRoomID='" & csvHrm & "' AND " &_
"PrevClass1='" & dbCls & "' AND" &_
"lastUpdatedUser='" & updatedUser & "' AND" &_
"lastUpdatedDate='" & updatedDate & "'" &_
"WHERE StudentID=" & dbID & ";"
on error resume next
conn.execute(sql)
else
' I am not sure what to do here...
' I thought about creating a dynamic array:
' adding to the array for each ID not found
' however, I am not THAT skilled.
' If someone could help me with that,
' I would be grateful
end if
rs.movenext
loop
csv.movenext
loop
' This is the INSERT SQL I need to execute,
' but do not exactly know where it needs to be placed either
sql = "INSERT INTO tblStudent (" &_
"Active, StudentID, SSN, LastName, FirstName, MiddleName, Gender, "&_
"School, GradeLvl, HomeRoomID, lastUpdatedUser, LastUpdatedDate" &_
") VALUES (" &_
"'Yes', '" & csvID & "', '" & csvSSN & "', '" & csvLast & "', '" &_
csvFirst & "', '" & csvMiddle & "', '" & csvGender & "', '" &_
csvScl & "', '" & csvGrd & "', '" & csvHrm & "', '" &_
updatedUser & "', '" & updatedDate & _
"');"
on error resume next
conn.execute(sql)
if error<>0 then
response.cookies("updated") = "no"
response.cookies("updated").Expires = dateadd("s", 2, now())
response.redirect("step-5.asp")
else
response.cookies("updated") = "yes"
response.cookies("updated").Expires = dateadd("s", 2, now())
response.redirect("step-6.asp")
end if
这甚至可能不是最好的方法，我也愿意接受这方面的建议。但是，首先我需要完成这项工作：循环访问CSV，如果数据库中存在csvID则更新数据库，如果不存在则插入csvID行信息。
感谢Richard Benson，我已经能够让我的代码正常工作，大部分时间：我已经挂了这段代码：
csvLast = replace(csv.fields(2), "'", "")
csvFirst = replace(csv.fields(3), "'", "")
if csv.fields(4) <> NULL then
csvMiddle = replace(csv.fields(4), "'", "")
else
csvMiddle = csv.fields(4)
end if
replace()功能适用于第一个＆amp;姓氏，但是当我到达中间名时，它将无效。如果我将其保持为csvMiddle = replace(csv.fields(4), "'", "")，它有时会出错，因为中间名称字段有时是空的。 如何才能使其正常运行？这很可能是此代码顺利运行之前的最终问题。
答案 0 :(得分：2)
稍后会尝试将其放入更多上下文中，现在指向我尝试实现插入时的操作，如果不是在db中，则更新if。
Set rs = Server.CreateObject("ADODB.Recordset")
rs.ActiveConnection = "whateveryourconnectionstringis"
rs.Source = "SELECT * FROM Table WHERE ID = '" & intValue & ";"
rs.CursorType = 2
rs.CursorLocation = 3
rs.LockType = 3
rs.Open()
'If at this point we have no records, it doesnt exist so add it and any data all new records need'
If rs.BOF AND rs.EOF Then
rs.AddNew
rs("ID") = intValue
End If
'Update the rest of the fields
rs("Field1") = Value1
rs("Field2") = Value2
rs("Field3") = Value3
rs.Update()
rs.Close()
Set rs = Nothing
根据你的循环方式以及你将经历多少循环，这可能过于密集，但从代码的角度看它是最简单的
答案 1 :(得分：0)
我注意到的第一件事是你在loop之前rs.movenext。这意味着rs.eof将永远不会发生，因为您永远不会使用rs.movenext前进，而且确实会导致无限循环。
我认为这只是一个错字，因为你正确地为外部CSV循环。
答案 2 :(得分：0)
以下是我最终使用 （如果其他人遇到这样的问题）：
感谢大家的帮助。
Server.ScriptTimeout = 2147483647
Response.Buffer = False
on error resume next
dim conn1, conn, rs, updatedUser, updatedDate, filePath,
dim deactivateSQL, csvConn, connCSV, csv, sql
dim csvID, csvSSN, csvLast, csvFirst, csvMiddle
dim csvGender, csvScl, csvGrd, csvCls, dbCls
updatedUser = Request.Cookies("UserN")
updatedDate = date() & " " & time()
filePath = "\path\to\file"
' --- Connect to DZ database
set conn1=Server.CreateObject("ADODB.Connection")
conn1.Provider="Microsoft.Jet.OLEDB.4.0"
conn1.Open "E:/path/to/database.mdb"
' --- Deactivate ALL students
deactivateSQL = "UPDATE tblStudent SET Active=False " &_
"AND lastUpdatedUser='" & updatedUser & "' "&_
"AND lastUpdatedDate='" & updatedDate & "';"
conn1.execute(deactivateSQL)
conn1.close
' --- Connect to Students.CSV exported by iNOW
csvConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" &_
Server.MapPath(filePath) &_
";Extended Properties='text;HDR=no;FMT=Delimited';"
Set connCSV = Server.CreateObject("ADODB.Connection")
connCSV.Open csvConn
Set csv = Server.CreateObject("ADODB.recordset")
csv.open "SELECT * FROM Students.csv", connCSV
' --- Begin looping through Students.csv
do until csv.eof
' --- Get Students.csv Column Values
csvID = csv.fields(0)
if isnull(csv.fields(1)) then
csvSSN = NULL
else
csvSSN = csv.fields(1)
end if
csvLast = replace(csv.fields(2), "'", "")
csvFirst = replace(csv.fields(3), "'", "")
' --- Using IsNull() fixed the 2nd problem
' --- I was having after updating the question
if isnull(csv.fields(4)) then
csvMiddle = csv.fields(4)
else
csvMiddle = replace(csv.fields(4), "'", "")
end if
csvGender = csv.fields(5)
csvScl = csv.fields(6)
csvGrd = csv.fields(7)
csvCls = csv.fields(8)
' --- Connect to database
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "E:/path/to/database.mdb"
set rs=Server.CreateObject("ADODB.Recordset")
rs.open "SELECT * FROM tblStudent " &_
"WHERE StudentID='" & csvID & "';", conn
if rs.bof and rs.eof then
' --- if rs.bof & rs.eof, the csvID is NOT in the table
' --- Add the new csvID to DB, we'll add the rest in
' --- the UPDATE statement below
conn.execute("INSERT INTO tblStudent (StudentID) " &_
"VALUES ('" & csvID & "');")
' --- Set to 0 since it's supposed to be a number
dbCls = 0
else
' --- Get tblStudents.Class from existing record
dbCls = rs.fields("Class")
end if
' --- UPDATE the table with the appropriate info
sql = "UPDATE tblStudent SET " &_
"Active=True, " &_
"SSN=" & csvSSN & ", " &_
"LastName='" & csvlast & "', " &_
"FirstName='" & csvFirst & "', " &_
"MiddleName='" & csvMiddle & "', " &_
"Gender='" & csvGender & "', " &_
"School=" & csvScl & ", " &_
"GradeLvl=" & csvGrd & ", " &_
"Class=" & csvCls & ", " &_
"PrevClass1='" & dbCls & "', " &_
"lastUpdatedUser='" & updatedUser & "', " &_
"lastUpdatedDate='" & updatedDate & "' " &_
"WHERE StudentID='" & csvID & "';"
conn.execute(sql)
csv.movenext
loop
if error<>0 then
response.cookies("updated") = "no"
response.cookies("updated").Expires = dateadd("s", 2, now())
response.redirect("step-5.asp")
else
response.cookies("updated") = "yes"
response.cookies("updated").Expires = dateadd("s", 2, now())
response.redirect("step-6.asp")
end if