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| /* odbc.c
testing unixODBC
*/
#include <stdlib.h>
#include <stdio.h>
#include <sql.h>
#include <sqlext.h>
#include <sqltypes.h>
SQLHENV V_OD_Env; // Handle ODBC environment
long V_OD_erg; // result of functions
SQLHDBC V_OD_hdbc; // Handle connection
char V_OD_stat[10]; // Status SQL
SQLINTEGER V_OD_err,V_OD_rowanz,V_OD_id;
SQLSMALLINT V_OD_mlen;
char V_OD_msg[200],V_OD_buffer[200];
// Variable for queries
SQLHSTMT V_OD_hstmt; // Handle for a statement
void OD_ListDSN(void)
{
char l_dsn[100],l_desc[100];
short int l_len1,l_len2,l_next;
// Add cvc
printf("...........Listing DSN\n");
l_next=SQL_FETCH_FIRST_SYSTEM;
while( SQLDataSources(V_OD_Env,l_next,l_dsn, sizeof(l_dsn),
&l_len1, l_desc, sizeof(l_desc), &l_len2) == SQL_SUCCESS)
{
printf("Server=(%s) Description=(%s)\n",l_dsn,l_desc);
l_next=SQL_FETCH_NEXT;
}
// Add cvc
printf("........End of Listing\n");
}
int main()
{
// 1. allocate Environment handle and register version
V_OD_erg=SQLAllocHandle(SQL_HANDLE_ENV,SQL_NULL_HANDLE,&V_OD_Env);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error AllocHandle\n");
exit(0);
}
else printf("AllocHandle.........OK\n");
V_OD_erg=SQLSetEnvAttr(V_OD_Env, SQL_ATTR_ODBC_VERSION,
(void*)SQL_OV_ODBC3, 0);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error SetEnv\n");
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
exit(0);
}
else printf("SetEnv..............OK\n");
// 2. allocate connection handle, set timeout
V_OD_erg = SQLAllocHandle(SQL_HANDLE_DBC, V_OD_Env, &V_OD_hdbc);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error AllocHDB %d\n",V_OD_erg);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
exit(0);
}
else printf("AllocHDB............OK\n");
SQLSetConnectAttr(V_OD_hdbc, SQL_LOGIN_TIMEOUT,
(SQLPOINTER *)5, 0);
// List the DSNs
OD_ListDSN();
// 3. Connect to the datasource "DSN"
V_OD_erg = SQLConnect(V_OD_hdbc, (SQLCHAR*) "DSN", SQL_NTS,
(SQLCHAR*) "", SQL_NTS,
(SQLCHAR*) "", SQL_NTS);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Error SQLConnect %d\n",V_OD_erg);
SQLGetDiagRec(SQL_HANDLE_DBC, V_OD_hdbc,1,
V_OD_stat, &V_OD_err,V_OD_msg,100,&V_OD_mlen);
printf("%s (%d)\n",V_OD_msg,V_OD_err);
SQLFreeHandle(SQL_HANDLE_DBC, V_OD_hdbc);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
exit(0);
}
printf("Connection..........OK\n");
} |
