SQL那些事儿(十四)--C#调用oracle存储过程(查询非查询and有参无参)深度好文
来源:互联网 发布:udp端口测试工具 编辑:程序博客网 时间:2024/05/23 07:25
最近老总让使用存储过程,说这个比较好用,抓起本oracle书看了看,写存储过程不是很难,但是写了存储过程调用的时候遇到许多问题,经过一天时间,把各种能遇到i的问题基本总结了下,跟大家分享。
照例画了张图,先了解下各种调用oracle存储过程的情形:
(这里自己创建了一个sqlhelper类,C#调用的时候用到了这个,这个类放到了末尾)
一、非查询存储过程
1、无参数
创建存储过程
CREATE OR REPLACE PROCEDURE "USP_XCY" ASBEGINUPDATE T_CITY set F_INFO='info' WHERE F_ID='140100';END;
调用存储过程
string proName = "usp_xcy"; int result = SQLHelper.ExcuteProc(proName);
2、输入参数
创建存储过程
CREATE OR REPLACE PROCEDURE "USP_SELECT" (parm_id VARCHAR2)ASBEGINUPDATE T_CITY set F_INFO='info' WHERE F_ID=parm_id;END;
调用存储过程
string input = "140200"; string proName = "USP_SELECT"; OracleParameter[] param = new OracleParameter[1]; param[0] = new OracleParameter("parm_id", OracleDbType.Varchar2, input, ParameterDirection.Input); int result = SQLHelper.ExcuteProc(proName, param);
3、输出参数
创建存储过程
CREATE OR REPLACE PROCEDURE "USP_OUT" (parm_name IN VARCHAR2,parm_count OUT NUMBER )ASBEGIN-- routine body goes here, e.g.-- DBMS_OUTPUT.PUT_LINE('Navica t for Oracle'); SELECT COUNT(*) INTO parm_count FROM T_CITY WHERE T_CITY.F_NAME like '%'||parm_name||'%';END ;
调用存储过程
string input = "市"; string output = ""; string proName = "USP_OUT"; OracleParameter[] param = new OracleParameter[2]; param[0] = new OracleParameter("parm_name", OracleDbType.Varchar2, input, ParameterDirection.Input); param[1] = new OracleParameter("parm_count", OracleDbType.Int32, output, ParameterDirection.Output); int result = SQLHelper.ExcuteProc(proName, param); output = param[1].Value.ToString();
二、查询存储过程
1、返回datatable
创建存储过程
CREATE OR REPLACE PROCEDURE "USP_RESULT" (parm_cursor OUT sys_refcursor)ASBEGIN-- routine body goes here, e.g.-- DBMS_OUTPUT.PUT_LINE('Navicat for Oracle');open parm_cursor FOR SELECT * FROM T_CITY;END;
调用存储过程
string procName = "USP_RESULT"; OracleParameter[] param = new OracleParameter[1]; param[0] = new OracleParameter("parm_cursor", OracleDbType.RefCursor, ParameterDirection.Output); DataSet ds = SQLHelper.getDataSetProc(procName, param); DataTable dt = ds.Tables[0];
2、返回datareader
创建存储过程
CREATE OR REPLACE PROCEDURE "USP_RESULT" (parm_cursor OUT sys_refcursor)ASBEGIN-- routine body goes here, e.g.-- DBMS_OUTPUT.PUT_LINE('Navicat for Oracle');open parm_cursor FOR SELECT * FROM T_CITY;END;
调用存储过程
string procName = "USP_RESULT"; OracleParameter[] param = new OracleParameter[1]; param[0] = new OracleParameter("parm_cursor", OracleDbType.RefCursor, ParameterDirection.Output); OracleDataReader reader = SQLHelper.GetReaderByProc(procName, param); while (reader.Read()) { string s = reader[0].ToString(); }
最后备注下,调用oracle中的存储过程,oracle必须把存储过程名称大写,C#查询时自动会把查询名改为大写,so不然一直报错==
最后献上历经一个月改造,超级无敌sqlhelper类,不喜勿喷:
/*xcy于11.09修改,原sqlserver的DBHelper*/using Oracle.ManagedDataAccess.Client;using System;using System.Collections.Generic;using System.Configuration;using System.Data;using System.Linq;using System.Web;namespace JGS.Utility{ public class SQLHelper { //连接字符串 static string strConn = ConfigurationManager.ConnectionStrings["xcyCon"].ToString(); #region 执行查询,返回DataTable对象----------------------- public static DataTable GetTableProc(string procName) { return (GetTable(procName, null, CommandType.StoredProcedure)); } public static DataTable GetTableProc(string procName, OracleParameter[] pas) { return (GetTable(procName, pas, CommandType.StoredProcedure)); } public static DataTable GetTable(string strSQL) { return GetTable(strSQL, null); } public static DataTable GetTable(string strSQL, OracleParameter[] pas) { return GetTable(strSQL, pas, CommandType.Text); } /// <summary> /// 执行查询,返回DataTable对象 /// </summary> /// <param name="strSQL">sql语句</param> /// <param name="pas">参数数组</param> /// <param name="cmdtype">Command类型</param> /// <returns>DataTable对象</returns> public static DataTable GetTable(string strSQL, OracleParameter[] pas, CommandType cmdtype) { DataTable dt = new DataTable(); ; using (OracleConnection conn = new OracleConnection(strConn)) { OracleDataAdapter da = new OracleDataAdapter(strSQL, conn); da.SelectCommand.CommandType = cmdtype; if (pas != null) { da.SelectCommand.Parameters.AddRange(pas); } da.Fill(dt); } return dt; } #endregion #region 执行查询,返回DataSet对象------------------------- public static DataSet getDataSetProc(string procName) { return (GetDataSet(procName,null,CommandType.StoredProcedure)); } public static DataSet getDataSetProc(string procName,OracleParameter[]pas) { return (GetDataSet(procName, pas, CommandType.StoredProcedure)); } public static DataSet GetDataSet(string strSQL) { return GetDataSet(strSQL, null); } public static DataSet GetDataSet(string strSQL, OracleParameter[] pas) { return GetDataSet(strSQL, pas, CommandType.Text); } /// <summary> /// 执行查询,返回DataSet对象 /// </summary> /// <param name="strSQL">sql语句</param> /// <param name="pas">参数数组</param> /// <param name="cmdtype">Command类型</param> /// <returns>DataSet对象</returns> public static DataSet GetDataSet(string strSQL, OracleParameter[] pas, CommandType cmdtype) { DataSet dt = new DataSet(); using (OracleConnection conn = new OracleConnection(strConn)) { OracleDataAdapter da = new OracleDataAdapter(strSQL, conn); da.SelectCommand.CommandType = cmdtype; if (pas != null) { da.SelectCommand.Parameters.AddRange(pas); } da.Fill(dt); } return dt; } #endregion #region 执行非查询存储过程和SQL语句----------------------------- public static int ExcuteProc(string ProcName) { return ExcuteSQL(ProcName, null, CommandType.StoredProcedure); } public static int ExcuteProc(string ProcName, OracleParameter[] pars) { return ExcuteSQL(ProcName, pars, CommandType.StoredProcedure); } public static int ExcuteSQL(string strSQL) { return ExcuteSQL(strSQL, null); } public static int ExcuteSQL(string strSQL, OracleParameter[] paras) { return ExcuteSQL(strSQL, paras, CommandType.Text); } /// 执行非查询存储过程和SQL语句 /// 增、删、改 /// </summary> /// <param name="strSQL">要执行的SQL语句</param> /// <param name="paras">参数列表,没有参数填入null</param> /// <param name="cmdType">Command类型</param> /// <returns>返回影响行数</returns> public static int ExcuteSQL(string strSQL, OracleParameter[] paras, CommandType cmdType) { int i = 0; using (OracleConnection conn = new OracleConnection(strConn)) { OracleCommand cmd = new OracleCommand(strSQL, conn); cmd.CommandType = cmdType; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); i = cmd.ExecuteNonQuery(); conn.Close(); } return i; } #endregion #region 执行查询返回第一行,第一列--------------------------------- public static int ExcuteScalarSQL(string strSQL) { return ExcuteScalarSQL(strSQL, null); } public static int ExcuteScalarSQL(string strSQL, OracleParameter[] paras) { return ExcuteScalarSQL(strSQL, paras, CommandType.Text); } public static int ExcuteScalarProc(string strSQL, OracleParameter[] paras) { return ExcuteScalarSQL(strSQL, paras, CommandType.StoredProcedure); } /// <summary> /// 执行SQL语句,返回第一行,第一列 /// </summary> /// <param name="strSQL">要执行的SQL语句</param> /// <param name="paras">参数列表,没有参数填入null</param> /// <returns>返回影响行数</returns> public static int ExcuteScalarSQL(string strSQL, OracleParameter[] paras, CommandType cmdType) { int i = 0; using (OracleConnection conn = new OracleConnection(strConn)) { OracleCommand cmd = new OracleCommand(strSQL, conn); cmd.CommandType = cmdType; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); i = Convert.ToInt32(cmd.ExecuteScalar()); conn.Close(); } return i; } #endregion #region 查询获取单个值------------------------------------ /// <summary> /// 调用不带参数的存储过程获取单个值 /// </summary> /// <param name="ProcName"></param> /// <returns></returns> public static object GetObjectByProc(string ProcName) { return GetObjectByProc(ProcName, null); } /// <summary> /// 调用带参数的存储过程获取单个值 /// </summary> /// <param name="ProcName"></param> /// <param name="paras"></param> /// <returns></returns> public static object GetObjectByProc(string ProcName, OracleParameter[] paras) { return GetObject(ProcName, paras, CommandType.StoredProcedure); } /// <summary> /// 根据sql语句获取单个值 /// </summary> /// <param name="strSQL"></param> /// <returns></returns> public static object GetObject(string strSQL) { return GetObject(strSQL, null); } /// <summary> /// 根据sql语句 和 参数数组获取单个值 /// </summary> /// <param name="strSQL"></param> /// <param name="paras"></param> /// <returns></returns> public static object GetObject(string strSQL, OracleParameter[] paras) { return GetObject(strSQL, paras, CommandType.Text); } /// <summary> /// 执行SQL语句,返回首行首列 /// </summary> /// <param name="strSQL">要执行的SQL语句</param> /// <param name="paras">参数列表,没有参数填入null</param> /// <returns>返回的首行首列</returns> public static object GetObject(string strSQL, OracleParameter[] paras, CommandType cmdtype) { object o = null; using (OracleConnection conn = new OracleConnection(strConn)) { OracleCommand cmd = new OracleCommand(strSQL, conn); cmd.CommandType = cmdtype; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); o = cmd.ExecuteScalar(); conn.Close(); } return o; } #endregion #region 查询获取DataReader------------------------------------ /// <summary> /// 调用不带参数的存储过程,返回DataReader对象 /// </summary> /// <param name="procName">存储过程名称</param> /// <returns>DataReader对象</returns> public static OracleDataReader GetReaderByProc(string procName) { return GetReaderByProc(procName, null); } /// <summary> /// 调用带有参数的存储过程,返回DataReader对象 /// </summary> /// <param name="procName">存储过程名</param> /// <param name="paras">参数数组</param> /// <returns>DataReader对象</returns> public static OracleDataReader GetReaderByProc(string procName, OracleParameter[] paras) { return GetReader(procName, paras, CommandType.StoredProcedure); } /// <summary> /// 根据sql语句返回DataReader对象 /// </summary> /// <param name="strSQL">sql语句</param> /// <returns>DataReader对象</returns> public static OracleDataReader GetReader(string strSQL) { return GetReader(strSQL, null); } /// <summary> /// 根据sql语句和参数返回DataReader对象 /// </summary> /// <param name="strSQL">sql语句</param> /// <param name="paras">参数数组</param> /// <returns>DataReader对象</returns> public static OracleDataReader GetReader(string strSQL, OracleParameter[] paras) { return GetReader(strSQL, paras, CommandType.Text); } /// <summary> /// 查询SQL语句获取DataReader /// </summary> /// <param name="strSQL">查询的SQL语句</param> /// <param name="paras">参数列表,没有参数填入null</param> /// <returns>查询到的DataReader(关闭该对象的时候,自动关闭连接)</returns> public static OracleDataReader GetReader(string strSQL, OracleParameter[] paras, CommandType cmdtype) { OracleDataReader sqldr = null; OracleConnection conn = new OracleConnection(strConn); OracleCommand cmd = new OracleCommand(strSQL, conn); cmd.CommandType = cmdtype; if (paras != null) { cmd.Parameters.AddRange(paras); } conn.Open(); //CommandBehavior.CloseConnection的作用是如果关联的DataReader对象关闭,则连接自动关闭 sqldr = cmd.ExecuteReader(CommandBehavior.CloseConnection); return sqldr; } #endregion /* #region 批量插入数据--------------------------------------------- /// <summary> /// 往数据库中批量插入数据 /// </summary> /// <param name="sourceDt">数据源表</param> /// <param name="targetTable">服务器上目标表</param> public static void BulkToDB(DataTable sourceDt, string targetTable) { OracleConnection conn = new OracleConnection(strConn); SqlBulkCopy bulkCopy = new SqlBulkCopy(conn); //用其它源的数据有效批量加载sql server表中 bulkCopy.DestinationTableName = targetTable; //服务器上目标表的名称 bulkCopy.BatchSize = sourceDt.Rows.Count; //每一批次中的行数 try { conn.Open(); if (sourceDt != null && sourceDt.Rows.Count != 0) bulkCopy.WriteToServer(sourceDt); //将提供的数据源中的所有行复制到目标表中 } catch (Exception ex) { throw ex; } finally { conn.Close(); if (bulkCopy != null) bulkCopy.Close(); } } #endregion */ } }
0 0
- SQL那些事儿(十四)--C#调用oracle存储过程(查询非查询and有参无参)深度好文
- C#中使用SQL语句与存储过程(非查询)
- oracle 查询结果用逗号隔开(非存储过程)
- oracle实现存储过程分页查询(非包)
- C#调用mysql查询存储过程
- c# oracle 存储过程分页查询
- Hibernate-Criteria查询(3)DetachedCriteria构造查询条件、命名查询、原生SQL、调用存储过程(使用JDBC)
- Oracle分页查询存储过程(适用于单表查询)
- Arcgis javascript那些事儿(十四)——连接oracle
- c#使用Oracle数据库执行多条查询语句,非存储过程方法
- Oracle 查询存储过程
- SQL Server 2000 通用单表或视图查询存储过程及C#调用示例
- SQL命令查询Oracle存储过程信息(代码内容等)
- SQL命令查询Oracle存储过程信息(代码内容等)
- SQL命令查询Oracle存储过程信息(代码内容等)
- Servlet&JSP的那些事儿(十四)
- Java调用Oracle存储过程返回查询结果集
- sql server 查询某个表被哪些存储过程调用
- JNI字段描述符
- Go中error类型的nil值和nil
- STM32F103C8开发I2C通信(六)
- [leetcode 452]Minimum Number of Arrows to Burst Balloons
- Linux系统下安装QT及Qt远程调试
- SQL那些事儿(十四)--C#调用oracle存储过程(查询非查询and有参无参)深度好文
- python新手常见的报错提示
- jspSqlparser解析sql语句的简单使用
- Android设置全屏隐藏状态栏的方法
- 数据库(第一范式,第二范式,第三范式)
- 微信支付出现错误:-14,没有进入微信的支付界面
- shell中$(( ))与$( )还有${ }的区别
- Disruptor-无锁编程-核心原理剖析- Volatile的普遍误解
- css style与class之间的区别