【 tulaoshi.com - ASP.NET 】
---------SQL生成----------
任务是当用户以逗号来分隔查询的条件,的多条件查询,使用IN(x,y),但是当在数据库(ACCESS)对应的字段是字符型是就会出现错误,那是当然的!如果是IN('x','y')就没有问题!
下面的代码就是对字符串的操作,返回 'x','y'。
'-----接受要处理的字符串-------
Function Tool_disTest(ByVal TextBefore As String)
Dim TextAfter() As String
Dim intNum, intTextLen, k, i As Integer
intNum = 1
intTextLen = Len(TextBefore)
'--------计算有多少的查询条件--------
For i = 1 To intTextLen
If Mid(TextBefore, i, 1) = "," Then
intNum = intNum + 1
End If
Next
'-----------------------------------
ReDim TextAfter(intNum)
k = 1
'--------把每个条件放到数组里---------
For i = 1 To intTextLen
If Mid(TextBefore, i, 1) = "," Then
k += 1
Else
TextAfter(k) = TextAfter(k) & Mid(TextBefore, i, 1)
End If
Next
'----------------------
Dim strTemp As String
'--------为每一个条件加上''----------
For i = 1 To intNum
strTemp = TextAfter(i)
TextAfter(i) = "'" & strTemp & "'"
Next
'----------------------
strTemp = ""
'------添加分隔条件用的","------
For i = 1 To intNum
strTemp = strTemp & TextAfter(i) & ","
Next
'------------------
'------去除最后一个,------
strTemp = Mid(strTemp, 1, Len(strTemp) - 1)
'-------------------
Return strTemp
End Function
最后在SQLServer中又试了试,发现SQLServer查询的时候用IN(x,y)来查询字符型是OK的,(SQLServer就是比ACCESS强点
,呵呵)
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