#include <iostream>
using namespace std;
#include <stdio.h>
#define OTL_UNICODE // enable Unicode (UTF-16)
// Uncomment the line below if you use #define OTL_UNICODE_CHAR_TYPE
//#define OTL_UNICODE_CHAR_TYPE wchar_t
// #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) \
{ \
swscanf(str, \
L"%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) \
{ \
swprintf(str, \
L"%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(1, // 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 .
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.