#include <iostream>
using namespace std;
#include <stdio.h>
// #define OTL_ODBC_UNIX // uncomment this line if UnixODBC is used
#define OTL_ODBC_ALTERNATE_RPC
#if !defined(_WIN32) && !defined(_WIN64)
#define OTL_ODBC
#else
#define OTL_ODBC_POSTGRESQL // required with PG ODBC on Windows
#endif
#define OTL_ODBC_TIME_ZONE
#define OTL_ODBC_STRING_TO_TIMESTAMP(str,tm) \
{ \
sscanf(str, \
"%04d-%02d-%02d %02d:%02d:%02d.%06ld%hd", \
&tm.year, \
&tm.month, \
&tm.day, \
&tm.hour, \
&tm.minute, \
&tm.second, \
&tm.fraction, \
&tm.tz_hour); \
}
#define OTL_ODBC_TIMESTAMP_TO_STRING(tm,str) \
{ \
sprintf(str, \
"%04d-%02d-%02d %02d:%02d:%02d.%06ld %+hd", \
tm.year, \
tm.month, \
tm.day, \
tm.hour, \
tm.minute, \
tm.second, \
tm.fraction, \
tm.tz_hour); \
}
#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(50, // PostgreSQL 8.1 and higher, the buffer can be > 1
"insert into test_tab values(:f1<int>,:f2<char[60]>, :f3<char[60]>)",
// INSERT statement, :f2, and :f3 need to be declared as char[XX]
// in order for otl_datetime-to-string conversion to work.
db // connect object
);
otl_datetime tm;
for(int i=1;i<=10;++i){
tm.year=1998;
tm.month=10;
tm.day=19;
tm.hour=23;
tm.minute=12;
tm.second=12;
tm.frac_precision=6; // microseconds
tm.fraction=123456;
tm.tz_hour=-5; // time zone offset in hours
tm.tz_minute=0;
o<<i<<tm<<tm;
}
}
void select(void)
{
otl_stream i(5, // stream buffer size can be > great 1 on SELECT.
"select f1, f2\\:\\:varchar, f3\\:\\:varchar from test_tab",
// f2, f3 need to be converted into varchar/string,
// for example: f2::varchar
// SELECT statement
db // connect object
);
int f1;
otl_datetime f2, f3;
// Second's precision needs to be specified BEFORE the stucture can be
// used either for writing or reading timestamp values, which have second's
// fractional part.
f2.frac_precision=6; // milliseconds
while(!i.eof()){ // while not end-of-data
i>>f1>>f2>>f3;
cout<<"f1="<<f1;
cout<<", f2="<<f2.month<<"/"<<f2.day<<"/"
<<f2.year<<" "<<f2.hour<<":"<<f2.minute<<":"
<<f2.second<<"."
<<f2.fraction;
if(f2.tz_hour>=0)
cout<<" +"<<f2.tz_hour;
else
cout<<" "<<f2.tz_hour;
cout<<", f3="<<f3.month<<"/"<<f3.day<<"/"
<<f3.year<<" "<<f3.hour<<":"<<f3.minute<<":"
<<f3.second<<"."
<<f3.fraction;
cout<<endl;
}
}
int main()
{
otl_connect::otl_initialize(); // initialize ODBC environment
try{
db.rlogon("scott/tiger@postgresql"); // connect to PostgreSQL
otl_cursor::direct_exec
(
db,
"drop table test_tab",
otl_exception::disabled // disable OTL exceptions
); // drop table
db.commit();
otl_cursor::direct_exec
(
db,
"create table test_tab(f1 int, f2 timestamp(6) with time zone, f3 timestamp(6))"
); // create table
db.commit(); // commit DDL statements
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 ODBC
return 0;
}
f1=1, f2=10/19/1998 23:12:12.123456 -5, f3=10/19/1998 23:12:12.123456
f1=2, f2=10/19/1998 23:12:12.123456 -5, f3=10/19/1998 23:12:12.123456
f1=3, f2=10/19/1998 23:12:12.123456 -5, f3=10/19/1998 23:12:12.123456
f1=4, f2=10/19/1998 23:12:12.123456 -5, f3=10/19/1998 23:12:12.123456
f1=5, f2=10/19/1998 23:12:12.123456 -5, f3=10/19/1998 23:12:12.123456
f1=6, f2=10/19/1998 23:12:12.123456 -5, f3=10/19/1998 23:12:12.123456
f1=7, f2=10/19/1998 23:12:12.123456 -5, f3=10/19/1998 23:12:12.123456
f1=8, f2=10/19/1998 23:12:12.123456 -5, f3=10/19/1998 23:12:12.123456
f1=9, f2=10/19/1998 23:12:12.123456 -5, f3=10/19/1998 23:12:12.123456
f1=10, f2=10/19/1998 23:12:12.123456 -5, f3=10/19/1998 23:12:12.123456
Copyright © 1996-2024, Sergei Kuchin, email: skuchin@gmail.com, skuchin@gmail.com .
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