---------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) ---------end-------
|