/* test: ²âÊÔ½Ó¿ÚSQLGetstmtAttr£¬ */ #include #include #include #include #include SQLHENV V_OD_Env; // Handle ODBC environment SQLHENV 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],type[200],remark[200],V_OD_buffer1[200]; SQLINTEGER maxlv,minlv,curschema; SQLINTEGER m_min,m_max; 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; } // //SQLSetConnectAttr(V_OD_hdbc, SQL_LOGIN_TIMEOUT, (SQLPOINTER *)5, 0); //SET SQL_ATTR_AUTOCOMMIT OFF SQLSetConnectAttr(V_OD_hdbc, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_OFF, 0); // 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_STMT, V_OD_hdbc, &hstmt); if ((V_OD_erg != SQL_SUCCESS) && (V_OD_erg != SQL_SUCCESS_WITH_INFO)) { printf("Error allcoc hstmt %d\n",V_OD_erg); SQLGetDiagRec(SQL_HANDLE_STMT, hstmt,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; } // SQLGetEnvtAttr SQLINTEGER cursor_hold; rc = SQLGetStmtAttr( hstmt, SQL_ATTR_MAX_LENGTH, &cursor_hold, 0, NULL ) ; printf( "\nSQL_ATTR_MAX_LENGTHd is: " ) ; if ( cursor_hold == 0 ) printf( "the default values 0 \n" ) ; else printf( "OFF\n" ) ; SQLDisconnect(V_OD_hdbc); SQLFreeHandle(SQL_HANDLE_DBC,V_OD_hdbc); SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env); rc = SQLGetStmtAttr( hstmt, SQL_ATTR_MAX_ROWS, &cursor_hold, 0, NULL ) ; printf( "\nSQL_ATTR_MAX_ROWS is: " ) ; if ( cursor_hold == 0 ) printf( "the default values 0 \n" ) ; else printf( "OFF\n" ) ; SQLDisconnect(V_OD_hdbc); SQLFreeHandle(SQL_HANDLE_DBC,V_OD_hdbc); SQLFreeHandle(SQL_HANDLE_ENV, V_OD_Env); return(0); }