re: OTL 4.0, OTL concept harvey 2008-08-06 14:28
这个是OTL调sql, ODBC的,注意是
#define OTL_ODBC

而不是ORACLE的例子

因为otl + oracle的例子网上非常多,
而otl + sqlServer的例子网上很少,

在这希望能起到抛砖引玉的作用。
re: OTL 4.0, OTL concept harvey 2008-08-06 14:25
忘了对以上例子的说明了。

以上是OTL中调用存储过程,得到出参的例子,OTL说明书里是有的,但我也找了很久才找到的。网址是 http://otl.sourceforge.net/otl3_ex24.htm

需要注意以下
otl_stream o(1, stored procedure call
"{call my_proc("
       " :A<int,inout>, " //
       " :B<char[31],out>, " //
        " :C<char[31],in> " //char[31], 和in之间不能有空格
       ")}",
       db);
re: OTL 4.0, OTL concept harvey 2008-08-06 14:20
This example demonstrates a stored procedure call.

Source Code
#include <iostream>using namespace std;#include <stdio.h>#define OTL_ODBC_MSSQL_2005 // Compile OTL 4/ODBC, MS SQL 2005//#define OTL_ODBC // Compile OTL 4/ODBC. Uncomment this when used with MS SQL 7.0/ 2000#include <otlv4.h>otl_connect db; // connect objectvoid stored_proc(void)// invoking stored procedure{ otl_stream o(1, // buffer size should be equal to 1 in case of stored procedure call "{call my_proc(" " :A<int,inout>, " " :B<char[31],out>, " " :C<char[31],in> " ")}", // stored procedure call db // connect object ); o.set_commit(0); // set stream auto-commit off since // the stream does not generate transaction o<<1<<"Test String1"; // assigning :1 = 1, :3 = "Test String1" int a; char b[31]; o>>a>>b; cout<<"A="<<a<<", B="<<b<<endl;}int main(){ otl_connect::otl_initialize(); // initialize ODBC environment try{ db.rlogon("uid=scott;pwd=tiger;dsn=mssql"); // connect to ODBC otl_cursor::direct_exec (db, "CREATE PROCEDURE my_proc " " @A int out, " " @B varchar(60) out, " " @C varchar(60) " "AS " "BEGIN " " SELECT @A=@A+1" " SELECT @B=@C " "END" ); // create stored procedure stored_proc(); // invoking stored procedure } catch(otl_exception& p){ // intercept OTL exceptions cerr<<p.msg<<endl; // print out error message cerr<<p.code<<endl; // print out error code cerr<<p.var_info<<endl; // print out the variable that caused the error cerr<<p.sqlstate<<endl; // print out SQLSTATE message cerr<<p.stm_text<<endl; // print out SQL that caused the error } db.logoff(); // disconnect from the data source return 0;}
Output
A=2, B=Test String1
<2026年6月>
31123456
78910111213
14151617181920
21222324252627
2829301234
567891011

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