This example demonstrates simple INSERT and SELECT with Oracle DATEs and otl_datetime.
#include <iostream> using namespace std; #include <stdio.h>
#define OTL_ORA8 // Compile OTL 4.0/OCI8 #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, // buffer size "insert into test_tab2 values(:f1<float>,:f2<timestamp>)", // SQL statement 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; o<<(float)i<<tm; } } void select(void) { otl_stream i(50, // buffer size "select * from test_tab2 where f2=:f2<timestamp>", // SELECT statement db // connect object ); // create select stream int f1; otl_datetime tm,f2; tm.year=1998; tm.month=10; tm.day=19; tm.hour=23; tm.minute=12; tm.second=12; i<<tm; // assigning :1 = tm // SELECT automatically executes when all input variables are // assigned. First portion of out rows is fetched to the buffer while(!i.eof()){ // while not end-of-data i>>f1>>f2; cout<<"f1="<<f1<<", f2="<<f2.month<<"/"<<f2.day<<"/" <<f2.year<<" "<<f2.hour<<":"<<f2.minute<<":" <<f2.second<<endl; } }
int main() { otl_connect::otl_initialize(); // initialize OCI8 environment try{ db.rlogon("scott/tiger"); // connect to Oracle otl_cursor::direct_exec ( db, "drop table test_tab2", otl_exception::disabled // disable OTL exceptions ); // drop table otl_cursor::direct_exec ( db, "create table test_tab2(f1 int, f2 date)" ); // 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.var_info<<endl; // print out the variable that caused the error } db.logoff(); // disconnect from Oracle return 0; }
f1=1, f2=10/19/1998 23:12:12 f1=2, f2=10/19/1998 23:12:12 f1=3, f2=10/19/1998 23:12:12 f1=4, f2=10/19/1998 23:12:12 f1=5, f2=10/19/1998 23:12:12 f1=6, f2=10/19/1998 23:12:12 f1=7, f2=10/19/1998 23:12:12 f1=8, f2=10/19/1998 23:12:12 f1=9, f2=10/19/1998 23:12:12 f1=10, f2=10/19/1998 23:12:12
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