linux-odbc

来源：互联网发布：足彩n串1算法编辑：程序博客网时间：2024/06/15 18:31

#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,V_OD_colanz;

char V_OD_msg[200],V_OD_buffer[200];

int main(int argc,char *argv[])
{
// 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);
}

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);
}

// 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);
}

SQLSetConnectAttr(V_OD_hdbc, SQL_LOGIN_TIMEOUT, (SQLPOINTER *)5, 0);
// 3. Connect to the datasource "web"
V_OD_erg = SQLConnect(V_OD_hdbc, (SQLCHAR*) "MySQL63", SQL_NTS,(SQLCHAR*) "root", SQL_NTS,(SQLCHAR*) "123456", 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_ENV, V_OD_Env);
exit(0);
}

printf("Connected !/n");

V_OD_erg=SQLAllocHandle(SQL_HANDLE_STMT, V_OD_hdbc, &V_OD_hstmt);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Fehler im AllocStatement %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_ENV, V_OD_Env);
exit(0);
}

SQLBindCol(V_OD_hstmt,1,SQL_C_CHAR, &V_OD_buffer,150,&V_OD_err);

SQLBindCol(V_OD_hstmt,2,SQL_C_ULONG,&V_OD_id,150,&V_OD_err);

V_OD_erg=SQLExecDirect(V_OD_hstmt,"SELECT dtname,iduser FROM web order by iduser",SQL_NTS);

if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
   printf("Error in Select %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_STMT,V_OD_hstmt);
   SQLFreeHandle(SQL_HANDLE_DBC,V_OD_hdbc);
   SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
   exit(0);
}

V_OD_erg=SQLNumResultCols(V_OD_hstmt,&V_OD_colanz);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
    SQLFreeHandle(SQL_HANDLE_STMT,V_OD_hstmt);
    SQLDisconnect(V_OD_hdbc);
    SQLFreeHandle(SQL_HANDLE_DBC,V_OD_hdbc);
    SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
    exit(0);
}

printf("Number of Columns %d/n",V_OD_colanz);
V_OD_erg=SQLRowCount(V_OD_hstmt,&V_OD_rowanz);
if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO))
{
printf("Number of RowCount %d/n",V_OD_erg);
SQLFreeHandle(SQL_HANDLE_STMT,V_OD_hstmt);
SQLDisconnect(V_OD_hdbc);
SQLFreeHandle(SQL_HANDLE_DBC,V_OD_hdbc);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
exit(0);
}

printf("Number of Rows %d/n",V_OD_rowanz);
V_OD_erg=SQLFetch(V_OD_hstmt);
while(V_OD_erg != SQL_NO_DATA)
{
printf("Result: %d %s/n",V_OD_id,V_OD_buffer);
V_OD_erg=SQLFetch(V_OD_hstmt);
} ;

SQLFreeHandle(SQL_HANDLE_STMT,V_OD_hstmt);
SQLDisconnect(V_OD_hdbc);
SQLFreeHandle(SQL_HANDLE_DBC,V_OD_hdbc);
SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env);
return(0);

}

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