Ole for Oracle 是一個用來實現微軟Office應用操作Oracle數據庫的組件。通過該組件,用戶可以直接在Office應用的界面中進行數據的查詢、編輯和導出。這為我們在日常工作、學習中提供了非常方便快捷的操作方式。下面我們來看一些具體的應用場景來了解這款組件的優勢。
首先,Ole for Oracle可與MS Excel結合,實現大數據量導出。我們在使用Excel時,有時需要將數據導出到Oracle數據庫中,但Excel自身的導出功能往往無法滿足我們的需求,這時就可以使用Ole for Oracle組件,來實現Excel與Oracle的數據交互。例如我們要將一張電子表格中的員工信息導入到Oracle的員工信息表中(假設表結構一致),只需要編寫以下VBA代碼:
Sub Data_Export() Dim OracleConn As Object Set OracleConn = CreateObject("ADODB.Connection") OracleConn.ConnectionString = "Provider=OraOLEDB.Oracle;Data Source=Oracle_DB;User Id=User_Name;Password=User_Pwd;" OracleConn.Open Dim ExcelConn As Object Set ExcelConn = CreateObject("ADODB.Connection") OracleConn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\Excel_File.xls;Extended Properties='Excel 8.0;HDR=YES;IMEX=1';" OracleConn.Open Dim OracleRs As Object Set OracleRs = CreateObject("ADODB.Recordset") OracleRs.Open "SELECT * FROM Employee", OracleConn, adOpenStatic, adLockOptimistic Dim ExcelRs As Object Set ExcelRs = CreateObject("ADODB.Recordset") ExcelRs.Open "SELECT * FROM [Sheet1$]", ExcelConn, adOpenStatic, adLockOptimistic '將Excel中的數據插入到Oracle中 OracleRs.AddNew OracleRs("Employee_No") = ExcelRs("Employee No") OracleRs("Employee_Name") = ExcelRs("Employee Name") OracleRs("Employee_Age") = ExcelRs("Employee Age") OracleRs.Update OracleRs.Close ExcelRs.Close OracleConn.Close ExcelConn.Close Set OracleRs = Nothing Set ExcelRs = Nothing Set OracleConn = Nothing Set ExcelConn = Nothing End Sub
其次,Ole for Oracle還可與MS Word結合,實現數據庫查詢結果的多級分組展示。我們在操作Oracle時,常常需要進行多級分組查詢,并將結果進行分類統計,以圖形的方式進行展示。這個過程在Oracle數據庫中完成比較繁瑣,但使用Word的分組功能非常方便。例如我們要對一張熱銷產品表按照產品類型、銷售區域、銷售日期進行分級匯總統計,并生成圖例,只需要編寫以下VBA代碼:
Sub Create_Report() Dim OracleConn As Object Set OracleConn = CreateObject("ADODB.Connection") OracleConn.ConnectionString = "Provider=OraOLEDB.Oracle;Data Source=Oracle_DB;User Id=User_Name;Password=User_Pwd;" OracleConn.Open Dim OracleRs As Object Set OracleRs = CreateObject("ADODB.Recordset") OracleRs.Open "SELECT Product_Type, Sale_Area, Sale_Date, SUM(Sale_Count) AS Total_Sale FROM Sale_Info GROUP BY Product_Type, Sale_Area, Sale_Date ORDER BY Product_Type, Sale_Area, Sale_Date", OracleConn, adOpenStatic, adLockOptimistic Dim WordApp As Object Set WordApp = CreateObject("Word.Application") Dim WordDoc As Object Set WordDoc = WordApp.Documents.Add() WordDoc.Activate Dim WordRange As Object Set WordRange = WordDoc.Range(0, 0) WordRange.Select Dim Group_Lvl1 As String Dim Group_Lvl2 As String For i = 0 To OracleRs.RecordCount - 1 If Group_Lvl1<>OracleRs("Product_Type") Then Group_Lvl1 = OracleRs("Product_Type") '創建Group Lvl 1表格 End If If Group_Lvl2<>OracleRs("Sale_Area") Then Group_Lvl2 = OracleRs("Sale_Area") '創建Group Lvl 2表格 End If '創建Group Lvl 3表格 '插入數據 '生成圖表 Next i WordDoc.SaveAs ("D:\Report.doc") WordDoc.Close WordApp.Quit OracleRs.Close OracleConn.Close Set OracleRs = Nothing Set OracleConn = Nothing Set WordRange = Nothing Set WordDoc = Nothing Set WordApp = Nothing End Sub
上述兩個例子只是Ole for Oracle的一小部分應用場景,Ole for Oracle還支持與其他Office應用組合使用,如Access、PowerPoint等。如果你是Oracle數據庫的用戶,那么Ole for Oracle會是你的得力助手,為你提供更高效、便利的數據操作體驗。