成人午夜视频全免费观看高清-秋霞福利视频一区二区三区-国产精品久久久久电影小说-亚洲不卡区三一区三区一区

lr鏈接數(shù)據(jù)筆記


view plaincopy to clipboardprint?
/*需要的表結構如下
CREATE TABLE `test_data` (
`order_id` BIGINT UNSIGNED NOT NULL COMMENT 'Order numbers. Must be unique.',
`status` BOOL NOT NULL DEFAULT '0' COMMENT 'Whether data has been used or not. A value of 0 means FALSE.',
`date_used` DATETIME NULL COMMENT 'Date/time that the data was used.',
UNIQUE (
    `order_id`
)
) ENGINE = innodb COMMENT = 'LoadRunnertestdata';
*/
Action()
{
int rc;  
int db_connection; //數(shù)據(jù)庫連接
int query_result; // 查詢結果集 MySQL_RES
char** result_row; // 查詢的數(shù)據(jù)衕

char *server = "localhost";
char *user = "root";
char *password = "123456";
char *database = "test";
int port = 3306;
int unix_socket = NULL;  
int flags = 0;  

// 找到libmysql.dll的所在位置.
rc = lr_load_dll("C:\\Program Files\\MySQL\\MySQLServer5.1\\bin\\libmysql.dll");
if (rc != 0) {
    lr_error_message("Could not load libmysql.dll");
    lr_abort();
}

// 創(chuàng)建MySQL對象
db_connection = mysql_init(NULL);
if (db_connection == NULL) {
    lr_error_message("Insufficient memory");
    lr_abort();
}

// 連接到MySQL數(shù)據(jù)庫
rc = mysql_real_connect(db_connection, server, user, password, database, port, unix_socket, flags);
if (rc == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}

// 向數(shù)據(jù)庫插入數(shù)據(jù)
// 此處的 {ORDER_ID} 是一個參數(shù)，簡單測試時可以用一個常數(shù)代替
lr_save_string (lr_eval_string("INSERT INTO test_data (order_id) VALUES ({ORDER_ID})"),"paramInsertQuery");  
rc = mysql_query(db_connection, lr_eval_string("{paramInsertQuery}"));
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}

// 從數(shù)據(jù)庫讀取一個數(shù)據(jù)并顯示
rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1");
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}
query_result = mysql_use_result(db_connection);
if (query_result == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}
// 如果結果集包含多行數(shù)據(jù)，需要多次調用 mysql_fetch_row 直到返回NULL
result_row = (char **)mysql_fetch_row(query_result);  
if (result_row == NULL) {
    lr_error_message("Did not expect the result set to be empty");
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}
// 保存參數(shù)，用于刪除這行數(shù)據(jù)
lr_save_string(result_row[0], "paramOrderID");
lr_output_message("Order ID is: %s", lr_eval_string("{paramOrderID}"));
mysql_free_result(query_result);

// 在事務里更新一行數(shù)據(jù)，需要用InnoDB引擎
rc = mysql_query(db_connection, "BEGIN"); //啟動事務
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}
// 使用 "FOR UPDATE" 鎖住要更新的數(shù)據(jù)行
rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1 FOR UPDATE");  
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}
query_result = mysql_use_result(db_connection);
if (query_result == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}
result_row = (char **)mysql_fetch_row(query_result);  
if (result_row == NULL) {
    lr_error_message("沒有查詢到結果");
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}
lr_save_string(result_row[0], "paramOrderID");
lr_output_message("Order ID is: %s", lr_eval_string("{paramOrderID}"));
mysql_free_result(query_result);
lr_save_string(lr_eval_string("UPDATE test_data SET status=TRUE, date_used=NOW() WHERE order_id='{paramOrderID}'"),"paramUpdateQuery");
rc = mysql_query(db_connection, lr_eval_string("{paramUpdateQuery}"));
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}
rc = mysql_query(db_connection, "COMMIT"); // 提交事務
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}

// 再次查找數(shù)據(jù)，應該為空了，因為前面的事務更新了標志
rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1");
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}
query_result = mysql_use_result(db_connection);
if (query_result == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}
result_row = (char **)mysql_fetch_row(query_result);
if (result_row == NULL) {
    lr_output_message("Result set is empty as expected");
    mysql_free_result(query_result);
} else {
    lr_error_message("Did not expect the result set to contain any rows");
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}

// 刪除數(shù)據(jù)
lr_save_string(lr_eval_string("DELETE FROM test_data WHERE order_id = '{paramOrderID}'"),"paramDeleteQuery");
rc = mysql_query(db_connection, lr_eval_string("{paramDeleteQuery}"));
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}

// 釋放MySQL資源
mysql_close(db_connection);
    return 0;
}
/*需要的表結構如下
CREATE TABLE `test_data` (
`order_id` BIGINT UNSIGNED NOT NULL COMMENT 'Order numbers. Must be unique.',
`status` BOOL NOT NULL DEFAULT '0' COMMENT 'Whether data has been used or not. A value of 0 means FALSE.',
`date_used` DATETIME NULL COMMENT 'Date/time that the data was used.',
UNIQUE (
    `order_id`
)
) ENGINE = innodb COMMENT = 'LoadRunner test data';
*/
Action()
{
int rc;
int db_connection; // 數(shù)據(jù)庫連接
int query_result; // 查詢結果集 MYSQL_RES
char** result_row; // 查詢的數(shù)據(jù)衕

char *server = "localhost";
char *user = "root";
char *password = "123456";
char *database = "test";
int port = 3306;
int unix_socket = NULL;
int flags = 0;

// 找到libmysql.dll的所在位置.
rc = lr_load_dll("C:\\Program Files\\MySQL\\MySQL Server 5.1\\bin\\libmysql.dll");
if (rc != 0) {
    lr_error_message("Could not load libmysql.dll");
    lr_abort();
}

// 創(chuàng)建MySQL對象
db_connection = mysql_init(NULL);
if (db_connection == NULL) {
    lr_error_message("Insufficient memory");
    lr_abort();
}

// 連接到MySQL數(shù)據(jù)庫
rc = mysql_real_connect(db_connection, server, user, password, database, port, unix_socket, flags);
if (rc == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}

// 向數(shù)據(jù)庫插入數(shù)據(jù)
// 此處的 {ORDER_ID} 是一個參數(shù)，簡單測試時可以用一個常數(shù)代替
lr_save_string (lr_eval_string("INSERT INTO test_data (order_id) VALUES ({ORDER_ID})"),"paramInsertQuery");
rc = mysql_query(db_connection, lr_eval_string("{paramInsertQuery}"));
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}

// 從數(shù)據(jù)庫讀取一個數(shù)據(jù)并顯示
rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1");
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}
query_result = mysql_use_result(db_connection);
if (query_result == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}
// 如果結果集包含多行數(shù)據(jù)，需要多次調用 mysql_fetch_row 直到返回NULL
result_row = (char **)mysql_fetch_row(query_result);
if (result_row == NULL) {
    lr_error_message("Did not expect the result set to be empty");
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}
// 保存參數(shù)，用于刪除這行數(shù)據(jù)
lr_save_string(result_row[0], "paramOrderID");
lr_output_message("Order ID is: %s", lr_eval_string("{paramOrderID}"));
mysql_free_result(query_result);

// 在事務里更新一行數(shù)據(jù)，需要用InnoDB引擎
rc = mysql_query(db_connection, "BEGIN"); //啟動事務
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}
// 使用 "FOR UPDATE" 鎖住要更新的數(shù)據(jù)行
rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1 FOR UPDATE");
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}
query_result = mysql_use_result(db_connection);
if (query_result == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}
result_row = (char **)mysql_fetch_row(query_result);
if (result_row == NULL) {
    lr_error_message("沒有查詢到結果");
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}
lr_save_string(result_row[0], "paramOrderID");
lr_output_message("Order ID is: %s", lr_eval_string("{paramOrderID}"));
mysql_free_result(query_result);
lr_save_string(lr_eval_string("UPDATE test_data SET status=TRUE, date_used=NOW() WHERE order_id='{paramOrderID}'"),"paramUpdateQuery");
rc = mysql_query(db_connection, lr_eval_string("{paramUpdateQuery}"));
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}
rc = mysql_query(db_connection, "COMMIT"); // 提交事務
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}

// 再次查找數(shù)據(jù)，應該為空了，因為前面的事務更新了標志
rc = mysql_query(db_connection, "SELECT order_id FROM test_data WHERE status IS FALSE LIMIT 1");
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}
query_result = mysql_use_result(db_connection);
if (query_result == NULL) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}
result_row = (char **)mysql_fetch_row(query_result);
if (result_row == NULL) {
    lr_output_message("Result set is empty as expected");
    mysql_free_result(query_result);
} else {
    lr_error_message("Did not expect the result set to contain any rows");
    mysql_free_result(query_result);
    mysql_close(db_connection);
    lr_abort();
}

// 刪除數(shù)據(jù)
lr_save_string(lr_eval_string("DELETE FROM test_data WHERE order_id = '{paramOrderID}'"),"paramDeleteQuery");
rc = mysql_query(db_connection, lr_eval_string("{paramDeleteQuery}"));
if (rc != 0) {
    lr_error_message("%s", mysql_error(db_connection));
    mysql_close(db_connection);
    lr_abort();
}

// 釋放MySQL資源
mysql_close(db_connection);
return 0;
}

分享文章：lr鏈接數(shù)據(jù)筆記
當前鏈接：http://jinyejixie.com/article20/ghoico.html

成都網站建設公司_創(chuàng)新互聯(lián)，為您提供關鍵詞優(yōu)化、服務器托管、云服務器、搜索引擎優(yōu)化、用戶體驗、網站策劃

廣告

聲明：本網站發(fā)布的內容（圖片、視頻和文字）以用戶投稿、用戶轉載內容為主，如果涉及侵權請盡快告知，我們將會在第一時間刪除。文章觀點不代表本網站立場，如需處理請聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內容未經允許不得轉載，或轉載時需注明來源： 創(chuàng)新互聯(lián)

小程序開發(fā)
凭祥市| 正镶白旗| 日照市| 正宁县| 子长县| 鹤山市| 青川县| 尼木县| 梁平县| 含山县| 湛江市| 烟台市| 祁门县| 迁西县| 江陵县| 庄河市| 阳新县| 玉环县| 资中县| 建昌县| 西峡县| 丹寨县| 原平市| 安乡县| 略阳县| 贡山| 临泉县| 仁怀市| 美姑县| 澎湖县| 依安县| 山西省| 宁乡县| 高唐县| 即墨市| 峡江县| 涡阳县| 积石山| 莎车县| 永平县| 泰兴市|