OTL 4.0, Example 242 (64-bit integers (bigint), MS SQL Server, OTL/ODBC)

Example 242 (64-bit integers (bigint), MS SQL Server, OTL/ODBC)

This example demonstrates the use of 64-bit integer bind variables with MS SQL Server, OTL/ODBC.

Source Code

#include <iostream>
#include <stdio.h>
using namespace std;

#define OTL_ODBC_MSSQL_2008 // Compile OTL 4/ODBC, MS SQL 2008
//#define OTL_ODBC // Compile OTL 4/ODBC. Uncomment this when used with MS SQL 7.0/ 2000
#define OTL_BIGINT __int64 // Enabling VC++ 64-bit integers
#include <otlv4.h> // include the OTL 4.0 header file

otl_connect db; // connect object

void insert()
// insert rows into table
{
otl_stream o(50, // buffer size
"insert into test_tab values(:f1<bigint>,:f2<char[31]>)",
// SQL statement
db // connect object
);
char tmp[32];

for(OTL_BIGINT i=1;i<=100;++i){
sprintf(tmp,"Name%d",(int)i);
o<<i<<tmp;
}
}

void select()
{
otl_stream i(50, // buffer size
"select * from test_tab where f1>=:f<bigint> and f1<=:ff<bigint>*2",
// SELECT statement
db // connect object
);
// create select stream

OTL_BIGINT f1;
char f2[31];
char f1str[40];

i<<(OTL_BIGINT)8<<(OTL_BIGINT)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=";
_i64toa(f1,f1str,10);
cout<<f1str<<", f2="<<f2<<endl;
}

}

int main()
{
otl_connect::otl_initialize(); // initialize ODBC environment
try{

db.rlogon("scott/tiger@mssql2008"); // 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 bigint, f2 varchar(30))"
); // create table

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.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 Oracle

return 0;

}

Output

f1=8, f2=Name8
f1=9, f2=Name9
f1=10, f2=Name10
f1=11, f2=Name11
f1=12, f2=Name12
f1=13, f2=Name13
f1=14, f2=Name14
f1=15, f2=Name15
f1=16, f2=Name16

Examples Contents Go Home

Copyright © 1996-2024, Sergei Kuchin, email: skuchin@gmail.com,
skuchin@gmail.com .

Permission to use, copy, modify and redistribute this document
for
any purpose is hereby granted without fee, provided that the above
copyright
notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.