#include #include #include #include #include SQLHENV V_OD_Env; // Handle ODBC environment SQLHENV V_OD_hstmt; SQLRETURN rc; 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,V_ID; SQLSMALLINT V_OD_mlen,V_OD_colanz; char V_OD_msg[200],V_OD_buffer[200],schema[200],table[200],database[200],remark[200],V_OD_buffer1[200]; SQLHANDLE hARD; SQLINTEGER maxlv,minlv,curschema; SQLINTEGER m_min,m_max; SQLHSTMT hstmt; char *buf = "Mike"; int value = 3; int main(int argc,char *argv[]) { /** ODBC handle 1) SQL_HANDLE_ENV 2) SQL_HANDLE_DBC 3) SQL_HANDLE_STMT */ // 1. test SQLAllocEnv V_OD_erg = SQLAllocEnv(&V_OD_Env); if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO)) { printf("Error AllocHandle\n"); return -1; } 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); return -1; } // 2. allocate connection handle, set timeout V_OD_erg = SQLAllocConnect (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); return -1; } // 3. Connect to the datasource "gaussdb" V_OD_erg = SQLConnect(V_OD_hdbc, (SQLCHAR*) "gaussdb", 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_ENV, V_OD_Env); return -1; } printf("Connected Successfuly!\n"); V_OD_erg = SQLAllocHandle(SQL_HANDLE_DESC, V_OD_hdbc, &hARD); if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO)) { printf("Error allcoc SQL_HANDLE_DESC %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); return -1; } /* set a single field of a descriptor record */ SQLSMALLINT descFieldParameterType; rc = SQLGetDescField(hARD, 1, /* look at the parameter */ SQL_DESC_PARAMETER_TYPE, &descFieldParameterType, /* result */ SQL_IS_SMALLINT, NULL); if (SQL_ERROR != rc) { printf("Error SQLGetDescField %d\n",rc); SQLGetDiagRec(SQL_HANDLE_DESC, hARD,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); return -1; } printf("SQLGetDescField %s\n",descFieldParameterType); SQLDisconnect(V_OD_hdbc); SQLFreeHandle(SQL_HANDLE_DBC,V_OD_hdbc); SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env); return(0); }