OTL 4.0, Example 91 (otl_datetime container and DATE/TIME/TIMESTAMP table columns)

Example 91 (otl_datetime container and DATE/TIME/TIMESTAMP table columns)

This example demonstrates simple INSERT/SELECT with DB2's DATEs/TIMEs/TIMESTAMPs and otl_datetime.

Source Code

#include <iostream>
using namespace std;

#include <stdio.h>
#define OTL_DB2_CLI // Compile OTL 4.0/DB2-CLI
#include <otlv4.h> // include the OTL 4.0 header file

otl_connect db; // connect object

void insert(void)
// insert rows into table
{
otl_stream o(3, // stream buffer size in logical rows.
"insert into test_tab "
"values(:f1<int>,:f2<db2date>, "
" :f3<db2time>,:f4<timestamp>)",
// INSERT statement
db // connect object
);

otl_datetime tm1, tm2, tm3;

for(int i=1;i<=10;++i){

tm1.year=1998;
tm1.month=10;
tm1.day=19;
// time conponents should be set 0 in this
// because it does not work otherwise for DB2 8.1,
// and it works fine for earlier versions
// of DB2 (6.x, 7.x)
tm1.hour=0;
tm1.minute=0;
tm1.second=0;

// date conponents should be set 0 in this
// because it does not work otherwise for DB2 8.1,
// and it works fine for earlier versions
// of DB2 (6.x, 7.x)
tm2.year=0;
tm2.month=0;
tm2.day=0;

tm2.hour=23;
tm2.minute=12;
tm2.second=12;

tm3.year=1998;
tm3.month=10;
tm3.day=19;
tm3.hour=23;
tm3.minute=12;
tm3.second=12;

o<<i<<tm1<<tm2<<tm3;

}
}

void select(void)
{
otl_stream i(5, // stream buffer size in logical rows
"select * from test_tab",
// SELECT statement
db // connect object
);

int f1;
otl_datetime f2,f3,f4;

while(!i.eof()){ // while not end-of-data
i>>f1>>f2>>f3>>f4;
cout<<"f1="<<f1;
cout<<", f2="<<f2.month<<"/"<<f2.day<<"/"
<<f2.year;
cout<<", f3="<<f3.hour<<":"<<f3.minute<<":"
<<f3.second;
cout<<", f4="<<f4.month<<"/"<<f4.day<<"/"
<<f4.year<<" "<<f4.hour<<":"<<f4.minute<<":"
<<f4.second;
cout<<endl;
}

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

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

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 date, f3 time, f4 timestamp)"
); // create table

insert(); // insert records into table
select(); // select records from table

db.logoff(); // disconnect from DB2

}

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
}

return 0;

}

Output

f1=1, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
f1=2, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
f1=3, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
f1=4, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
f1=5, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
f1=6, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
f1=7, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
f1=8, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
f1=9, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12
f1=10, f2=10/19/1998, f3=23:12:12, f4=10/19/1998 23:12:12

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Copyright © 1996-2017, Sergei Kuchin, email: skuchin@gmail.com, skuchin@gmail.com .

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