Oracle進階編程,oraclesql進階編程
Oracle的進階編程主要是涉及到資料庫的十大對象的使用,在這裡,和大家分享一下我在學習這些技能時的一些筆記。希望對大家有所協助!
閱讀本文之前,您還可以查閱我之前關於資料庫方面的介紹:
Oracle DDL基本操作
Oracle基礎資料型別 (Elementary Data Type)
OracleDatabase Backup與恢複
接下來介紹一下 Oracle的進階編程。
1、預存程序返回單值參數
*call + 包名 + 預存程序名(傳入、傳出值)
String str = "{call smsbusiness.deleteZhZMember(?,?,?)}";
*建立串連
Connection conn = null;
conn = DriverManager.getConnection();
*使用java.sql.*類
CallableStatement cs = conn.prepareCall(str);
*傳入參數
cs.setInt(1,id);
cs.setInt(2,-2);
*設定out值
cs.registerOutputParameter(3,Types.NUMBERIC);
*執行
cs.excuse();
2、預存程序返回多值參數
*包的建立
CREATE OR REPLACE PACKAGE TESTPACKAGE AS
TYPE Test_CURSOR IS REF CURSOR;
END TESTPACKAGE;
*遊標的建立
CREATE OR REPLACE PROCEDURE TESTC(p_CURSOR out TESTPACKAGE.Test_CURSOR) IS
BEGIN
OPEN p_CURSOR FOR SELECT * FROM grade;
END TESTC;
*Java的調用
CallableStatement cs = conn.prepareCall(sqlStr);
ResultSet rs = (ResultSet)cs.getObject(2);
3、無返回值預存程序樣本
CREATE OR REPLACE PROCEDURE TESTA(PARA1 IN VARCHAR2,PARA2 IN VARCHAR2) AS BEGIN INSERT INTO HYQ.B_ID (I_ID,I_NAME) VALUES (PARA1, PARA2); END TESTA;
package com.hyq.src; import java.sql.*; import java.sql.ResultSet; public class TestProcedureOne { public TestProcedureOne() { } public static void main(String[] args ){ String driver = "oracle.jdbc.driver.OracleDriver"; String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521: hyq "; Statement stmt = null; ResultSet rs = null; Connection conn = null; CallableStatement cstmt = null; try { Class.forName(driver); conn = DriverManager.getConnection(strUrl, " zl ", "123456"); CallableStatement proc = null; //建立執行預存程序的對象 proc = conn.prepareCall("{ call HYQ.TESTA(?,?) }"); //設定預存程序 call為關鍵字. proc.setString(1, "100"); //設定第一個輸入參數 proc.setString(2, "TestOne");//設定第二個輸入參數 proc.execute();//執行 } catch (SQLException ex2) { ex2.printStackTrace(); } catch (Exception ex2) { ex2.printStackTrace(); } finally{ try { if(rs != null){ rs.close(); if(stmt!=null){ stmt.close(); } if(conn!=null){ conn.close(); } } } catch (SQLException ex1) { } } }
4、基本返回值預存程序樣本
CREATE OR REPLACE PROCEDURE TESTB(PARA1 IN VARCHAR2,PARA2 OUT VARCHAR2) AS BEGIN SELECT INTO PARA2 FROM TESTTB WHERE I_ID= PARA1; END TESTB;
//Java代碼: package com.hyq.src; public class TestProcedureTWO { public TestProcedureTWO() { } public static void main(String[] args ){ String driver = "oracle.jdbc.driver.OracleDriver"; String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521:zl"; Statement stmt = null; ResultSet rs = null; Connection conn = null; try { Class.forName(driver); conn = DriverManager.getConnection(strUrl, " hyq ", " hyq "); CallableStatement proc = null; proc = conn.prepareCall("{ call zl.TESTB(?,?) }"); //設定預存程序 proc.setString(1, "100");//設定第一個參數輸入參數 proc.registerOutParameter(2, Types.VARCHAR);//第二個參數輸出參數,是VARCHAR類型的 proc.execute();//執行 String testPrint = proc.getString(2);//獲得輸出參數 System.out.println("=testPrint=is="+testPrint); }catch(Exception e){ }finally{ } } }
5、集合返回值預存程序
//資料庫端: CREATE OR REPLACE PACKAGE TESTPACKAGE AS TYPE Test_CURSOR IS REF CURSOR; end TESTPACKAGE; CREATE OR REPLACE PROCEDURE TESTC(p_CURSOR out TESTPACKAGE.Test_CURSOR) IS BEGIN OPEN p_CURSOR FOR SELECT * FROM HYQ.TESTTB; END TESTC;
//Java代碼: package com.hyq.src; import java.sql.*; import java.io.OutputStream; import java.io.Writer; import java.sql.PreparedStatement; import java.sql.ResultSet; import oracle.jdbc.driver.*; public class TestProcedureTHREE { public TestProcedureTHREE() { } public static void main(String[] args ){ String driver = "oracle.jdbc.driver.OracleDriver"; String strUrl = "jdbc:oracle:thin:@127.0.0.1:1521:zl"; Statement stmt = null; ResultSet rs = null; Connection conn = null; try { Class.forName(driver); conn = DriverManager.getConnection(strUrl, "hyq", "hyq"); CallableStatement proc = null; proc = conn.prepareCall("{ call hyq.testc(?) }"); //預存程序 hyq包下的 proc.registerOutParameter(1,oracle.jdbc.OracleTypes.CURSOR);//設定輸出參數是一個遊標.第一個參數,遊標類型 proc.execute();//執行 rs = (ResultSet)proc.getObject(1); //獲得第一個參數是一個遊標,轉化成ResultSet類型 while(rs.next()) //獲得資料 { System.out.println(rs.getString(1) +rs.getString(2)); } }catch (Exception ex2) { ex2.printStackTrace(); }finally{ } } }
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