批量更新删除重复示例
时 间:2013-09-15 23:09:08
作 者:智狼 ID:33282 城市:东莞
摘 要:批量更新删除重复示例
正 文:
针对网友菜鸟的问题,制作了本示例
(1)如何判断表Sheet1的字段IOTime的时间如果>17:45:00就在17:25:00 与17:45:00之间随时取数更新(2)如果同一天,同一个人的字段IOTime时间>17:25:00有多条记录,就删除多余的,只保留一条记录(因为数据较多,有没有方法做到以后功能,执行速度又快呢:))
表Sheet1 的副本保存的是未处理前数据。
代码:
Private Sub Command0_Click()
Dim sql As String, sj(1) As String
sj(0) = "17:25:00"
sj(1) = "17:45:00"
DoCmd.DeleteObject acTable, "aa"
sql = "Select Sheet1.DepartmentName, Sheet1.HolderNo, Sheet1.CardNo, Sheet1.HolderName, Sheet1.IODate, Min(Sheet1.IOTime) AS aa INTO aa "
sql = sql & "FROM Sheet1 "
sql = sql & "Where IOTime > '" & sj(0) & "' And IOTime< '" & sj(1) & "' "
sql = sql & "GROUP BY Sheet1.DepartmentName, Sheet1.HolderNo, Sheet1.CardNo, Sheet1.HolderName, Sheet1.IODate;"
CurrentDb.Execute sql
sql = "Delete Sheet1.*, Sheet1.IOTime "
sql = sql & "FROM Sheet1 "
sql = sql & "Where IOTime > '" & sj(0) & "' And IOTime< '" & sj(1) & "';"
CurrentDb.Execute sql
sql = "Insert INTO Sheet1 ( DepartmentName, HolderNo, CardNo, HolderName, IODate, IOTime ) "
sql = sql & "Select aa.DepartmentName, aa.HolderNo, aa.CardNo, aa.HolderName, aa.IODate, aa.aa "
sql = sql & "FROM aa;"
CurrentDb.Execute sql
DoCmd.DeleteObject acTable, "aa"
End Sub
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