#include <iostream.h> #include <stdio.h> #define OTL_ODBC // Compile OTL 4.0/ODBC #include <otlv4.h> otl_connect db; // connect object void insert() // insert rows into table { otl_stream o(50, // buffer size "insert into test_tab values(:f1<float>,:f2<char[31]>)", // SQL statement db // connect object ); char tmp[32]; for(int i=1;i<=100;++i){ sprintf(tmp,"Name%d",i); o<<(float)i<<tmp; } } void select(void) // fetching result set returned by a stored procedure { otl_stream i(50, // buffer size "{call my_proc(:f1<int,in>)}", // implicit SELECT statement db, // connect object otl_implicit_select // implicit SELECT statement ); // create select stream int f1; char f2[31]; i<<8; // assigning :f1 = 8 // SELECT automatically executes when all input variables are // assigned. First portion of output rows is fetched to the buffer while(!i.eof()){ // while not end-of-data i>>f1>>f2; cout<<"f1="<<f1<<", f2="<<f2<<endl; } i<<4; // assigning :f1 = 4 // SELECT automatically re-executes when all input variables are // assigned. First portion of out rows is fetched to the buffer while(!i.eof()){ // while not end-of-data i>>f1>>f2; cout<<"f1="<<f1<<", f2="<<f2<<endl; } } int main() { otl_connect::otl_initialize(); // initialize ODBC environment try{ db.rlogon("uid=scott;pwd=tiger;dsn=sapdb"); // connect to ODBC otl_cursor::direct_exec ( db, "drop table test_tab", otl_exception::disabled // disable OTL exceptions ); // drop table otl_cursor::direct_exec ( db, "create table test_tab(f1 int, f2 varchar(30))" ); // create table otl_cursor::direct_exec ( db, "DROP PROCEDURE my_proc", 0 // ignore any errors ); // drop stored procedure otl_cursor::direct_exec ( db, "CREATE DBPROC my_proc " " (IN F1 INTEGER) " " RETURNS CURSOR " "AS " "$CURSOR = 'F1_CURSOR'; " "DECLARE :$CURSOR CURSOR FOR SELECT * FROM SCOTT.test_tab " "WHERE f1>=:F1 AND f1<=:F1*2; " ); // create stored procedure insert(); // insert records into table select(); // select records from table } 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; }
A=2, B=Test String1
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