OTL 4.0, Example 236 (SQL statement label, DB2)

Example 236 (SQL statement label, DB2)

This example demonstrates SQL statement labels and DB2.

Source Code

#include <iostream>
using namespace std;

#include <stdio.h>

#define OTL_DB2_CLI // Compile OTL 4.0/DB-CLI
#include <otlv4.h> // include the OTL 4.0 header file

otl_connect db; // connect object

void select()
{ 
 otl_stream i(50, // buffer size
              "select * from test_tabxx where f1>=:f<int> and f1<=:ff<int>*2",
                 // SELECT statement
              db, // connect object
              otl_explicit_select,
              "SQL Stm #1"
             ); 
   // create select stream
 
 float f1;
 char f2[31];

 i<<8<<8; // assigning :f = 8; :ff = 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<<4; // assigning :f = 4, :ff = 4
   // 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;
 }

}

int main()
{
 otl_connect::otl_initialize(); // initialize DB2-CLI environment
 try{

  db.rlogon("scott/tiger@db2sql"); // connect to DB2

  select(); // select records from table

 }

 catch(otl_exception& p){ // intercept OTL exceptions
  cerr<<p.msg<<endl; // print out error message
  cerr<<p.stm_text<<endl; // print out SQL that caused the error
  cerr<<p.sqlstate<<endl; // print out SQLSTATE message
  cerr<<p.var_info<<endl; // print out the variable that caused the error
 }

 db.logoff(); // disconnect from DB2

 return 0;

}

Output

[IBM][CLI Driver][DB2/Windows 95] SQL0204N  "SCOTT.TEST_TABXX" is an undefined
ame.  SQLSTATE=42704

SQL Stm #1
42S02

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