String driver ="org.mariadb.jdbc.Driver"; //从配置参数中获取数据库url
String url = "jdbc:mariadb://"
          + "?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull"
  String user = "root";
  String pass = "123";

  try {
      Connection conn = DriverManager.getConnection(url,user,pass);
      Statement stmt = conn.createStatement();
      boolean add = stmt.execute("insert into t_exhibition_user set name = '飞',"
              +"company = 'yuan',job = 'yuan',phone = '123345678909',is_buy_equipment = 'N'");


java.sql.SQLDataException: (conn=15) Incorrect string value: '\x9E' for column 'name' at row 1
    at org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.get(
    at org.mariadb.jdbc.internal.util.exceptions.ExceptionMapper.getException(
    at org.mariadb.jdbc.MariaDbStatement.executeExceptionEpilogue(
    at org.mariadb.jdbc.MariaDbStatement.executeInternal(
    at org.mariadb.jdbc.MariaDbStatement.execute(
    at com.ratta.supernote.note.MariadbAndMysql.main(
Caused by: java.sql.SQLException: Incorrect string value: '\x9E' for column 'name' at row 1
Query is: insert into t_exhibition_user set name = '飞',company = 'yuan',job = 'yuan',phone = '123345678909',is_buy_equipment = 'N'
java thread: main
    at org.mariadb.jdbc.internal.util.LogQueryTool.exceptionWithQuery(
    at org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.executeQuery(
    at org.mariadb.jdbc.MariaDbStatement.executeInternal(
    ... 2 more


String driver ="com.mysql.jdbc.Driver"; //从配置参数中获取数据库url
String url = "jdbc:mysql://"
          + "?useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull"
  String user = "root";
  String pass = "123";

  try {
      Connection conn = DriverManager.getConnection(url,user,pass);
      Statement stmt = conn.createStatement();
      boolean add = stmt.execute("insert into t_exhibition_user set name = '飞',"
              +"company = 'yuan',job = 'yuan',phone = '123345678909',is_buy_equipment = 'N'");



useUnicode=true&characterEncoding=utf-8 这个配置常识过了,没效果。

Csdn user default icon

SET NAMES UTF8; DROP DATABASE IF EXISTS udisk; CREATE DATABASE udisk CHARSET=UTF8; USE udisk; CREATE TABLE udisk( uid INT PRIMARY KEY AUTO_INCREMENT, pic VARCHAR(32), uname VARCHAR(32), price FLOAT(5,2), addedTime BIGINT ); INSERT INTO udisk VALUES (NULL, 'img/1.jpg','三星','35.5','1234567890123'), 执行这些语句后,中文是显示???乱码,反而注释SET NAMES UTF8;后,显示正常,这是什么原因呢,初学mariaDB,请大神请教


<div class="post-text" itemprop="text"> <p>I am trying to create a simple web app that prints out database info from MariaDB/MySQL using PHP, im not even at that stage yet... I have trouble when connecting to the database and get the following error:</p> <blockquote> <p>Host '' is not allowed to connect to this MariaDB server</p> </blockquote> <p>Now, I have not done a secure installation so my Mariadb Server allows access from wildcard host and infact any host.I have also tried the code with the root account but received the same error. Can anyone tell me if its my code or whether its a procedure im not aware of that disallows connectors to access the information?</p> <p>Here is my code:</p> <pre><code>&lt;?php $con=mysqli_connect("","testuser","testpass","my_db"); if (mysqli_connect_errno()) { echo "Failed to connect to MariaDB: " . mysqli_connect_error(); } ?&gt; </code></pre> <p>Thanks in advance!</p> </div>


求教论坛各位大牛: 监控了两台相同mariadb数据库,都要进行慢查询监控,一台按照网上教程顺利实现,教程详见 但进行第二台慢查询任务部署时,手动执行任务脚本:/usr/bin/pt-query-digest ........... 总是报如下的错: install_driver(mysql) failed: Attempt to reload DBD/ aborted. Compilation failed in require at (eval 30) line 3. at /usr/bin/pt-query-digest line 1001. 注:两台数据库服务器操作完全相同,该装的工具都安装了,如下 # yum -y install perl-DBI # yum -y install perl-DBD-MySQL # yum install perl-IO-Socket-SSL # rpm -ivh percona-toolkit-2.2.6-1.noarch.rpm 找了很多方法都没有解决,两天还没解决,希望各位大牛能帮帮忙支支招,感激不尽!


<div class="post-text" itemprop="text"> <p>I've created database, for example 'mydb'. </p> <pre><code>CREATE DATABASE mydb CHARACTER SET utf8 COLLATE utf8_bin; CREATE USER 'myuser'@'%' IDENTIFIED BY PASSWORD '*HASH'; GRANT ALL ON mydb.* TO 'myuser'@'%'; GRANT ALL ON mydb TO 'myuser'@'%'; GRANT CREATE ON mydb TO 'myuser'@'%'; FLUSH PRIVILEGES; </code></pre> <p>Now i can login to database from everywhere, but can't create tables.</p> <p>How to grant all privileges on that database and (in the future) tables. I can't create tables in 'mydb' database. I always get:</p> <pre><code>CREATE TABLE t (c CHAR(20) CHARACTER SET utf8 COLLATE utf8_bin); ERROR 1142 (42000): CREATE command denied to user 'myuser'@'...' for table 't' </code></pre> </div> <p>转载于:</p>

MariaDB - PHP - 提交表单时未将数据插入表中

<div class="post-text" itemprop="text"> <p>I'm very new to PHP so please bear with me. I have a registration form and I'm submitting the values entered on that form and having them inserted into a Maria Database table, but the data is not being inserted into the table.</p> <p>I did a select * from profileinformation; on the table and the data isn't there.</p> <p>Any help is appreciated and points will be awarded!</p> <p>Here is my HTML Form:</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;link rel="stylesheet" type="text/css" href="stylesheet.css"&gt; &lt;title&gt;Registration Page&lt;/title&gt; &lt;script&gt; function validateForm() { var x = document.forms["myForm"]["netID"].value; if (x == null || x == "") { alert("NetID must be filled out"); return false; } var y = document.forms["myForm"]["email"].value; if (y == null || y == "") { alert("Email must be filled out"); return false; } var n = document.forms["myForm"]["fname"].value; if (n == null || n == "") { alert("First Name cannot be blank"); return false; } else if (n.length &lt; 2) { alert("First name cannot be less than 2 characters!"); return false; } var b = document.forms["myForm"]["lname"].value; if (b == null || b == "") { alert("Last Name cannot be blank"); return false; } else if (b.length &lt; 2) { alert("Last Name cannot b less than 2 characters!"); return false; } } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;ul&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;center&gt;&lt;img src="KSUlogo.PNG" alt="logo" style="width:100px;height:50px;"&gt;&lt;/center&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;li&gt;&lt;a class="active" href="Welcome.html"&gt;Home&lt;/a&gt;&lt;/li&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;li&gt;&lt;a href="CSERegistrationPage.html"&gt;Registration&lt;/a&gt;&lt;/li&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;li&gt;&lt;a href="#contact"&gt;Search&lt;/a&gt;&lt;/li&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;li&gt;&lt;a href="#about"&gt;About&lt;/a&gt;&lt;/li&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;/ul&gt; &lt;h1 style="text-align:center;"&gt;CCSE Community Profile Page&lt;/h1&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;br&gt; &lt;h2 style="text-align:center;"&gt;Enter your Registration Information&lt;/h2&gt; &lt;div style="text-align:center"&gt; &lt;form name="myForm" action="RegistrationValues.php" onsubmit="return validateForm()" method="post"&gt; &lt;center&gt;NetID: &lt;input type="text" name="netID"&gt;&lt;/center&gt; &lt;br&gt; &lt;center&gt;Email: &lt;input type="text" name="email"&gt;&lt;/center&gt; &lt;br&gt; &lt;center&gt;First Name: &lt;input type="text" name="fname"&gt;&lt;/center&gt; &lt;br&gt; &lt;center&gt;Last Name: &lt;input type="text" name="lname"&gt;&lt;/center&gt; &lt;br&gt; &lt;br&gt; Services You Can Provide the CSE Community&lt;/center&gt;&lt;br&gt; &lt;br&gt; &lt;input type="checkbox" name="radio" value="Java"&gt; Java Tutoring&lt;br&gt; &lt;input type="checkbox" name="radio" value="Computer" checked&gt; Computer Fixing&lt;br&gt; &lt;input type="checkbox" name="radio" value="PHP" checked&gt; PHP Tutoring&lt;br&gt; &lt;br&gt;&lt;br&gt; &lt;select name="availabilty"&gt; &lt;option value="blank"&gt;&lt;/option&gt; &lt;option value="Java"&gt;Morning&lt;/option&gt; &lt;option value="Computer"&gt;Evening&lt;/option&gt; &lt;option value="Service"&gt;Afternoon&lt;/option&gt; &lt;/select&gt; &lt;br&gt;&lt;br&gt; &lt;center&gt;&lt;input type="submit" value="Submit"&gt;&lt;/center&gt; &lt;/form&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Here is my PHP form:</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;link rel="stylesheet" type="text/css" href="stylesheet.css"&gt; &lt;title&gt;Registration Page&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;?php include "header.html";?&gt; &lt;?php include "navigation.html";?&gt; &lt;div style="text-align:center"&gt; &lt;p&gt;netID: &lt;?php echo $_POST["netID"]?&gt;&lt;/p&gt; &lt;p&gt;Email: &lt;?php echo $_POST["email"]?&gt;&lt;/p&gt; &lt;p&gt;First Name &lt;?php echo $_POST["fname"]?&gt;&lt;/p&gt; &lt;p&gt;Last Name: &lt;?php echo $_POST["lname"]?&gt;&lt;/p&gt; &lt;?php $netID = $email = $fname = $lname = ""; if ($_SERVER["REQUEST_METHOD"] == "POST") { $netID = test_input($_POST["netID"]); $email = test_input($_POST["email"]); $fname = test_input($_POST["fname"]); $lname = test_input($_POST["lname"]); } function test_input($data) { $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); return $data; } $servername = "localhost"; $username = "user"; $password = "newpassword"; $dbname = "project"; // Create connection $conn = new mysqli($servername, $username, $password, $dbname); if (!$conn) { die("Connection failed: " . mysqli_connect_error()); } $conn-&gt;query("insert into ProfileInformation (netID, email, fname, lname, radio, availabilty) values ( '{$_POST['netID']}', '{$_POST['email']}', '{$_POST['fname']}', '{$_POST['lname']}', '{$_POST['radio']}', '{$_POST['availabilty']}' )") or die(mysql_error()); echo "Done!!!!"; $conn-&gt;close(); ?&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Any help is appreciated and thanks in advance!</p> </div>


各位大神好,mariadb默认的安装路径是/var/lib/mysql下面,我现在想安装到/data下面,这个能否实现呢?我尝试了好几次,均以systemctl start mariadb.service 启动失败而告终!请教各位大神!


<div class="post-text" itemprop="text"> <p>I use PHP to send a query to the terminal and I want to receive the table that the database produces. I am new to PHP and having difficulties with the connection of the website and the database that I access from the terminal. </p> <pre><code> &lt;?php $con = new mysqli('localhost','root','','db'); $query = ""; if($con-&gt;connect_error) { die("Connection failed: " . $conn-&gt;connect_error); } else { echo "Connection Successful." } if($_SERVER["REQUEST_METHOD"] == ["POST"]) { $query = test_input($_POST["uni_name"]); } $prompt = 'select * from students where university like ' . $query . '%'; $dir = shell_exec("use db"); if($dir == NULL) { $output = shell_exec($prompt); echo "test"; } setModal($output); function test_input($data) { $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); return $data; } function setModal($query) { echo '&lt;div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"&gt; &lt;div class="modal-dialog" role="document"&gt; &lt;div class="modal-content"&gt; &lt;div class="modal-header"&gt; &lt;button type="button" class="close" data-dismiss="modal" aria-label="Close"&gt; &lt;span aria-hidden="true"&gt;&amp;times;&lt;/span&gt; &lt;/button&gt; &lt;h4 class="modal-title" id="myModalLabel"&gt;Graduate Information&lt;/h4&gt; &lt;/div&gt; &lt;div class="modal-body"&gt; '; echo $query; echo ' &lt;/div&gt; &lt;div class="modal-footer"&gt; &lt;button type="button" class="btn btn-secondary" data-dismiss="modal"&gt;Close&lt;/button&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt;'; } ?&gt; </code></pre> <p>The setModal function is to create a Bootstrap modal and display the info I get from the database. My main problem is the connection between the database and the website. </p> <p>Thanks in advance.. </p> </div>

我是PHP的初学者。 我创建了一个数据库。 如何在PHP页面中显示数据库中的数据?

<div class="post-text" itemprop="text"> <p>I have created a <code>Register.php</code> page with <code>name</code>, <code>email</code>, <code>password</code>, <code>gender</code>, <code>image</code> and <code>login page</code> with <code>name</code>. When <code>user registers</code> it's getting successfully inserted to database. When <code>user logins</code> it just shows <code>Welcome Username</code>.</p> <p>Now i want to get whole the registered data like name, email, password, gender, image to be displayed in the <code>welcome.php</code> page after <code>user logins</code>. How can i do it?</p> <p>Following is my code.</p> <p>Register.php</p> <pre><code>&lt;?php if(isset($_REQUEST['name'])) { $con = mysqli_connect("localhost","root","","userdb"); $target= "images/".basename($_FILES['image']['name']); $name= stripslashes($_REQUEST['name']); $name= mysqli_real_escape_string($con,$name); $email= stripslashes($_REQUEST['email']); $email= mysqli_real_escape_string($con,$email); $password= stripslashes($_REQUEST['password']); $password= mysqli_real_escape_string($con,$password); $gender= stripslashes($_REQUEST['gender']); $gender= mysqli_real_escape_string($con,$gender); $image= $_FILES['image']['name']; $query= "INSERT INTO regtab(name,email,password,gender,image)VALUES('$name','$email','$password','$gender','$image')"; $result= mysqli_query($con,$query); if($result){ echo"&lt;div class = 'form'&gt;Registered sucessfully.Click here to &lt;a href = 'login.php'&gt;Login&lt;/a&gt;&lt;/div&gt;"; } } else { ?&gt; &lt;!DOCTYPE html&gt; &lt;head&gt; &lt;title&gt;reg page&lt;/title&gt; &lt;!-- Latest compiled and minified CSS --&gt; &lt;link rel="stylesheet" href=""&gt; &lt;!-- jQuery library --&gt; &lt;script src=""&gt;&lt;/script&gt; &lt;!-- Latest compiled JavaScript --&gt; &lt;script src=""&gt;&lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;div class="container"&gt; &lt;div class="row top_margin"&gt; &lt;div class="col-xs-6 col-xs-offset-3"&gt; &lt;div class="panel panel-primary"&gt; &lt;div class="panel-heading"&gt;User Registration&lt;/div&gt; &lt;div class="panel-body"&gt; &lt;form method="POST" action="" enctype="multipart/form-data"&gt; &lt;div class="form-group"&gt; &lt;label for="name"&gt; Name&lt;/label&gt; &lt;input type="text" class="form-control" id="name" name="name"&gt; &lt;/div&gt; &lt;div class="form-group"&gt; &lt;label for="email"&gt;Email&lt;/label&gt; &lt;input type="email" class="form-control" id="email" name="email"&gt; &lt;/div&gt; &lt;div class="form-group"&gt; &lt;label for="password"&gt;Password&lt;/label&gt; &lt;input type="password" class="form-control" id="password" name="password"&gt; &lt;/div&gt; &lt;div class="form-group"&gt; &lt;label for="gender"&gt;Gender&lt;/label&gt; &lt;input type="radio" id="gender" name="gender" value="male"&gt;Male &lt;input type="radio" id="gender" name="gender" value="female"&gt;Female &lt;/div&gt; &lt;div class="form-group"&gt; &lt;label for="email"&gt;Image&lt;/label&gt; &lt;input type="file" class="" id="image" name="image"&gt; &lt;/div&gt; &lt;button type="submit" class="btn btn-primary" value=”registration_submit”&gt;Submit&lt;/button&gt; &lt;/form&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/body&gt; &lt;?php } ?&gt; &lt;/html&gt; </code></pre> <p>login.php</p> <pre><code>&lt;?php if(isset($_REQUEST['name'])) { session_start(); $con = mysqli_connect("localhost", "root", "", "userdb"); $name = stripslashes($_REQUEST['name']); $name = mysqli_real_escape_string($con,$name); $query = "SELECT * FROM `regtab` WHERE name='$name'"; $result = mysqli_query($con,$query); $rows = mysqli_num_rows($result); if($rows==1) { $name = $_SESSION['name']; header("Location: welcome.php"); } else { echo "&lt;div class_class=form&gt;username entered is wrong.Please enter correct name.&lt;br&gt;&lt;br&gt;Click here to &lt;a href ='login.php'&gt;LOGIN&lt;/a&gt;&lt;br&gt; Click here to &lt;a href ='test.php'&gt;REGISTER&lt;/a&gt;&lt;/div&gt;"; } } else { ?&gt; &lt;!DOCTYPE html&gt; &lt;head&gt; &lt;title&gt;reg page&lt;/title&gt; &lt;!-- Latest compiled and minified CSS --&gt; &lt;link rel="stylesheet" href=""&gt; &lt;!-- jQuery library --&gt; &lt;script src=""&gt;&lt;/script&gt; &lt;!-- Latest compiled JavaScript --&gt; &lt;script src=""&gt;&lt;/script&gt; &lt;/head&gt; &lt;div class="container"&gt; &lt;div class="row top_margin"&gt; &lt;div class="col-xs-6 col-xs-offset-3"&gt; &lt;div class="panel panel-primary"&gt; &lt;div class="panel-heading"&gt;User Login&lt;/div&gt; &lt;div class="panel-body"&gt; &lt;form method="POST" action="" enctype="multipart/form-data"&gt; &lt;div class="form-group"&gt; &lt;label for="first_name"&gt; Name&lt;/label&gt; &lt;input type="text" class="form-control" id="name" name="name"&gt; &lt;/div&gt; &lt;button type="submit" class="btn btn-primary" value=”submit”&gt;Submit&lt;/button&gt; &lt;/form&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;/div&gt; &lt;?php } ?&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>welcome.php</p> <pre><code>&lt;?php session_start(); $con = mysqli_connect( "localhost", "root", "", "userdb")or die(mysqli_error($con)); $query = "SELECT * FROM regtab" ; $result = mysqli_query($con , $query)or die(mysqli_error($con)); $num = mysqli_num_rows($result); echo "Welcome "; echo $_SESSION['name']; ?&gt; </code></pre> </div>


<div class="post-text" itemprop="text"> <p>I have this code that I want to run and it's connected to my database and it uses to show the values on the table but every time I do an UPDATE query.</p> <p>It updates the rest of the row with zeros except the one I've chosen. I want to keep my numbers on the row but only update the one that i chose but I can't figure it out how to!</p> <p>I initialized the table with a row with Zeros (0s) and then with my web page application I want to change those values. </p> <p>But if I have another value on the rest of the columns and I want to change this one, the rest of the values go to zero (the initial state of the table) (I don't know how to explain it better I think)</p> <pre><code>&lt;?php $showData = ("SELECT * FROM horario"); if ($new_user_activity['data'] == 'Seg' ) { $segHora = $new_user_activity['horas']; } $sql = ("UPDATE horario SET seg=$segHora WHERE id=1"); if(!mysqli_query($conn,$sql)) { echo("ERRO NA QUERY" ); } else { if(mysqli_query($conn,$sql)){ $sqlData = mysqli_query($conn,$showData); while ($row = mysqli_fetch_array($sqlData,MYSQLI_ASSOC)){ echo($row['seg']); } } } ?&gt; </code></pre> <p>Its expected to keep my values from the other columns on the same row!</p> <p><a href="" rel="nofollow noreferrer"><img src="" alt="PICTURE OF WHAT IS HAPPENING TO THE DATABASE"></a></p> </div>


我按照网上的步骤在linux虚拟机上安装mariadb10版本时,做到 cp /usr/local/mysql/support-files/my-medium.cnf /etc/my.cnf 这一步时,提示没有这个my-medium.cnf文件,请问一下怎么解决这个问题????


<div class="post-text" itemprop="text"> <p>I've got a database query that outputs the data I need, but I'm not sure how to get it into the format I need (also need to get it into csv format, but need to get the output right first).</p> <pre><code>SELECT `user_id`, `assessment_name`, `question_id`, `question_type_id`, `answer`, `created_at` FROM answer WHERE `assessment_id` = 1 </code></pre> <p>The output is like this (although with 30 rows per submission - just put three each here as an example):</p> <pre><code>11 Three Intelligences 31 6 4 7/22/08 11:30 11 Three Intelligences 40 4 4 7/22/08 11:30 11 Three Intelligences 41 6 5 7/22/08 11:30 10 Three Intelligences 31 6 3 7/22/08 14:54 10 Three Intelligences 40 4 4 7/22/08 14:54 10 Three Intelligences 41 6 4 7/22/08 14:54 12 Three Intelligences 31 6 4 7/29/08 10:31 12 Three Intelligences 40 4 4 7/29/08 10:31 12 Three Intelligences 41 6 4 7/29/08 10:31 </code></pre> <p>What I need is to reformat this so that it can be used for data analysis, which means getting the data into a single row for each user_id and assessment_name and created_at</p> <pre><code>assessment_name, user_id, answer(for question 31), question_type_id(for question 31), answer(for question 40), question_type_id(for question 40), answer(for question 41), question_type_id(for question 41), created_at Three Intelligences, 11, 6, 4, 4, 4, 6, 5, 7/22/08 11:30 Three Intelligences, 10, 6, 3, 4, 4, 6, 4, 7/22/08 14:54 Three Intelligences, 12, 6, 4, 4, 4, 6, 4, 7/29/08 10:31 </code></pre> <p>Is this possible? If so, I also assume I can do it in php, but I don't know enough to figure out the 'while' loops necessary. It probably doesn't even need to produce a csv file output... if I can just get it properly formatted on the page I can copy/paste for this particular project.</p> <p>Thanks</p> <p>--EDIT-- Here's what I've got so far -- this will generate the semi-raw output of the data... I think what I need is just to figure out what loops within loops are required within the 'while' to get the desired output.</p> <p></p><div class="snippet" data-lang="js" data-hide="false"> <div class="snippet-code"> <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;?php require_once '../connection.php'; // Create connection $conn = new mysqli(localhost, $dbuser, $dbpass, $db); // Check connection if ($conn-&gt;connect_error) { die("Connection failed: " . $conn-&gt;connect_error); } $query_responses = "SELECT `user_id`, `assessment_name`, `question_id`, `question_type_id`, `answer`, `created_at` FROM answer WHERE `assessment_id` = 1"; $result_responses = $conn-&gt;query($query_responses); if ($result_responses-&gt;num_rows &gt; 0) { // output data of each row while($row = $result_responses-&gt;fetch_assoc()){ echo $row["created_at"]. ", " .$row["assessment_name"]. ", " .$row["user_id"]. "," .$row["question_id"]. "," .$row["question_type_id"]. "," .$row["answer"]. "&lt;br /&gt;"; } } else { echo "0 results"; } $conn-&gt;close(); ?&gt;</code></pre> </div> </div> </div>


虚拟机上的cent0s6.2,安装mariadb5.5.20,按照以下步骤安装: shell> groupadd mysql shell> useradd -g mysql mysql shell> cd /usr/local shell> gunzip < /path/to/mysql-VERSION-OS.tar.gz | tar xvf - shell> ln -s full-path-to-mysql-VERSION-OS mysql shell> cd mysql shell> chown -R mysql . shell> chgrp -R mysql . shell> scripts/mysql_install_db --user=mysql shell> chown -R root . shell> chown -R mysql data shell> bin/mysqld_safe --user=mysql & 最后一步报错: [root@localhost mariadb-5.5.20-linux-x86_64]# bin/mysqld_safe --user=mysql & [1] 3074 [root@localhost mariadb-5.5.20-linux-x86_64]# 170406 05:10:57 mysqld_safe Logging to '/usr/local/mariadb-5.5.20-linux-x86_64/data/localhost.localdomain.err'. 170406 05:10:57 mysqld_safe Starting mysqld daemon with databases from /usr/local/mariadb-5.5.20-linux-x86_64/data 170406 05:11:00 mysqld_safe mysqld from pid file /usr/local/mariadb-5.5.20-linux-x86_64/data/ ended [1]+ Done bin/mysqld_safe --user=mysql 求助,这个百度了好长时间,没找到合适的解决方法。


centos7源码安装mariadb10.4.6,在初始化数据库时报错: ``` [root@localhost scripts]# ./mysql_install_db --basedir=/usr/local/mariadb/ --datadir=/data/mariadb/ --user=mysql chown: cannot access ‘./plugin/auth_pam/auth_pam_tool_dir’: No such file or directory Cannot change ownership of the './plugin/auth_pam/auth_pam_tool_dir' directory to the 'mysql' user. Check that you have the necessary permissions and try again. ``` 按照网上的说法,改了mysql_install_db文件,见下: ``` [root@localhost scripts]# vim mysql_install_db # Configure paths to support files 309 if test -n "$srcdir" 310 then 311 builddir='/usr/src/mariadb-10.4.6' 增加此行 312 basedir="$builddir" 313 bindir="$basedir/client" 314 resolveip="$basedir/extra/resolveip" 349 plugindir=`find_in_dirs --dir $basedir/lib*/plugin $basedir/lib*/mysql/plugin` 350 pamtooldir=$plugindir 351 pamtooldir='./plugin/auth_pam' 增加此行 352 # relative from where the script was run for a relocatable install 353 elif test -n "$dirname0" -a -x "$rel_mysqld" -a ! "$rel_mysqld" -ef "./bin/mysqld" 354 then 355 basedir="$dirname0" ``` 继续报错这个错误,求教!




<div class="post-text" itemprop="text"> <p>In mariadb, when I use "load data local infile" into a php script, I get this error message:</p> <blockquote> <p>the used command is not allowed with this MariaDB version for the query load data local infile</p> </blockquote> <p>This is the same thing than on this <a href="">thread</a>.</p> <p>I'm on CentOS 7 - Plesk Onyx and my <code>my.cnf</code> contains:</p> <pre><code>local-infile=1 </code></pre> <p>If I use "load data infile", I can import my csv file into my MySQL table but the csv file must to be located into the directory <code>/var/lib/mysql/my_database/</code></p> <p>But I can't create a csv file into <code>/var/lib/mysql/my_database/</code> from a php script located into <code>/var/www/vhosts/</code></p> <p>if I use "load data infile", I can import my csv file into my MySQL table but the csv file must to be located into the directory /var/lib/mysql/my_database/</p> <p>But I can't create a csv file into /var/lib/mysql/my_database/ from a php script located into /var/www/vhosts/ it doesn't work!</p> <p>What is the solution?</p> </div>


1. 使用腾讯云,在Linux系统上,安装wordpress。 2. mysql主机更改过自己主机的ip,还是“建立数据库连接时出错”。 3. 每次操作都有频繁地重启apache、mariadb数据库服务,还是“建立数据库连接时出错”。 4. 配置文件确定无误 ![图片说明]( ![图片说明]( ![图片说明](

delphi 7 如何访问MariaDB 10.0.14

系统环境为win7 64bit,数据库为64bit 的mariadb10.0.14,安装了mariadb的64bit的odbc后,数据源可以访问到mariadb的数据库,但是delphi7的ado总是报错:在指定的dsn中,驱动程序和应用程序之间的体系结构不匹配。 大牛们,请问还需要怎么设置?或者有其他方式访问mariadb?

mariadb imp/dmp问题,mariadb是否支持expdp/impdp


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MySQL 8.0.19安装教程(windows 64位)

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