SQL/PHP：在另一个表（多个表）上不匹配的联接
我有四张桌子：SQL/PHP：在另一个表（多个表）上不匹配的联接,php,mysql,sql,join,outer-join,Php,Mysql,Sql,Join,Outer Join,我有四张桌子： Personal_trainer(personaltrainerID, name, age, location) Client(clientID, name, age, location) Nutrition_Plan(NutritionplanID, personaltrainerID, clientID) Training_Plan(TrainingplanID, personaltrainerID, clientID) <?php
Personal_trainer(personaltrainerID, name, age, location)
Client(clientID, name, age, location)
Nutrition_Plan(NutritionplanID, personaltrainerID, clientID)
Training_Plan(TrainingplanID, personaltrainerID, clientID)
<?php
//code to search for a item from the database
// user can enter any character to search for a value from the db
if (isset($_POST['search']))
{
$valueToSearch = $_POST['ValueToSearch'];
$query = "select * from client WHERE concat(`clientID`, `name`, `age`, `sex`, `weight`, `height`, `yearsExperience`, `goal`, `injuries`, 'email')like'%".$valueToSearch."%'";
$search_result = filterTable($query);
}
else {
$query = "select *
from client
where clientID in (select clientID from nutrition_plan where personaltrainerID=?)
or clientID in (select clientID from training_plan where personalTrainerID=?)";
$query->bind_param("i", $_POST[""]);
$search_result = filterTable($query);
}
//code to filter the db
function filterTable($query)
{
$connect = mysqli_connect("localhost:3308","root","","fypdatabase");
$filter_Result = mysqli_query($connect, $query);
return $filter_Result;
}
?>
<?php
while($row = mysqli_fetch_array($search_result))
{ //display the details from the db in the table with option to delete or update entry
?>
<tr>
<td><?php echo $row["clientID"]; ?></td>
<td><?php echo $row["name"]; ?></td>
<td><?php echo $row["age"]; ?></td>
<td><?php echo $row["sex"]; ?></td>
<td><?php echo $row["weight"]; ?></td>
<td><?php echo $row["height"]; ?></td>
<td><?php echo $row["yearsExperience"]; ?></td>
<td><?php echo $row["goal"]; ?></td>
<td><?php echo $row["injuries"]; ?></td>
<td><?php echo $row["email"]; ?></td>
<td>
<a href="?Delete=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Delete</a>
</td>
<td>
<a href="updateClient.php?Edit=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Update</a>
</td>
</tr>
<?php
<?php
//code to search for a item from the database
// user can enter any character to search for a value from the db
if (isset($_POST['search']))
{
$valueToSearch = $_POST['ValueToSearch'];
$query = "select * from client WHERE concat(`clientID`, `name`, `age`, `sex`, `weight`, `height`, `yearsExperience`, `goal`, `injuries`, 'email')like'%".$valueToSearch."%'";
$search_result = filterTable($query);
}
else {
$query = "select *
from client
where clientID in (select clientID from nutrition_plan where personaltrainerID=?)
or clientID in (select clientID from training_plan where personalTrainerID=?)";
$query->bind_param("i", $_POST[""]);
$search_result = filterTable($query);
}
//code to filter the db
function filterTable($query)
{
$connect = mysqli_connect("localhost:3308","root","","fypdatabase");
$filter_Result = mysqli_query($connect, $query);
return $filter_Result;
}
?>
<?php
while($row = mysqli_fetch_array($search_result))
{ //display the details from the db in the table with option to delete or update entry
?>
<tr>
<td><?php echo $row["clientID"]; ?></td>
<td><?php echo $row["name"]; ?></td>
<td><?php echo $row["age"]; ?></td>
<td><?php echo $row["sex"]; ?></td>
<td><?php echo $row["weight"]; ?></td>
<td><?php echo $row["height"]; ?></td>
<td><?php echo $row["yearsExperience"]; ?></td>
<td><?php echo $row["goal"]; ?></td>
<td><?php echo $row["injuries"]; ?></td>
<td><?php echo $row["email"]; ?></td>
<td>
<a href="?Delete=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Delete</a>
</td>
<td>
<a href="updateClient.php?Edit=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Update</a>
</td>
</tr>
<?php
<?php
//code to search for a item from the database
// user can enter any character to search for a value from the db
if (isset($_POST['search']))
{
$valueToSearch = $_POST['ValueToSearch'];
$query = "select * from client WHERE concat(`clientID`, `name`, `age`, `sex`, `weight`, `height`, `yearsExperience`, `goal`, `injuries`, 'email')like'%".$valueToSearch."%'";
$search_result = filterTable($query);
}
else {
$query = "select *
from client
where clientID in (select clientID from nutrition_plan where personaltrainerID=?)
or clientID in (select clientID from training_plan where personalTrainerID=?)";
$query->bind_param("i", $_POST[""]);
$search_result = filterTable($query);
}
//code to filter the db
function filterTable($query)
{
$connect = mysqli_connect("localhost:3308","root","","fypdatabase");
$filter_Result = mysqli_query($connect, $query);
return $filter_Result;
}
?>
<?php
while($row = mysqli_fetch_array($search_result))
{ //display the details from the db in the table with option to delete or update entry
?>
<tr>
<td><?php echo $row["clientID"]; ?></td>
<td><?php echo $row["name"]; ?></td>
<td><?php echo $row["age"]; ?></td>
<td><?php echo $row["sex"]; ?></td>
<td><?php echo $row["weight"]; ?></td>
<td><?php echo $row["height"]; ?></td>
<td><?php echo $row["yearsExperience"]; ?></td>
<td><?php echo $row["goal"]; ?></td>
<td><?php echo $row["injuries"]; ?></td>
<td><?php echo $row["email"]; ?></td>
<td>
<a href="?Delete=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Delete</a>
</td>
<td>
<a href="updateClient.php?Edit=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Update</a>
</td>
</tr>
<?php
期望输出是所有客户数据，前提是该特定培训师为他们分配了培训或营养计划
<?php
//code to search for a item from the database
// user can enter any character to search for a value from the db
if (isset($_POST['search']))
{
$valueToSearch = $_POST['ValueToSearch'];
$query = "select * from client WHERE concat(`clientID`, `name`, `age`, `sex`, `weight`, `height`, `yearsExperience`, `goal`, `injuries`, 'email')like'%".$valueToSearch."%'";
$search_result = filterTable($query);
}
else {
$query = "select *
from client
where clientID in (select clientID from nutrition_plan where personaltrainerID=?)
or clientID in (select clientID from training_plan where personalTrainerID=?)";
$query->bind_param("i", $_POST[""]);
$search_result = filterTable($query);
}
//code to filter the db
function filterTable($query)
{
$connect = mysqli_connect("localhost:3308","root","","fypdatabase");
$filter_Result = mysqli_query($connect, $query);
return $filter_Result;
}
?>
<?php
while($row = mysqli_fetch_array($search_result))
{ //display the details from the db in the table with option to delete or update entry
?>
<tr>
<td><?php echo $row["clientID"]; ?></td>
<td><?php echo $row["name"]; ?></td>
<td><?php echo $row["age"]; ?></td>
<td><?php echo $row["sex"]; ?></td>
<td><?php echo $row["weight"]; ?></td>
<td><?php echo $row["height"]; ?></td>
<td><?php echo $row["yearsExperience"]; ?></td>
<td><?php echo $row["goal"]; ?></td>
<td><?php echo $row["injuries"]; ?></td>
<td><?php echo $row["email"]; ?></td>
<td>
<a href="?Delete=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Delete</a>
</td>
<td>
<a href="updateClient.php?Edit=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Update</a>
</td>
</tr>
<?php
<?php
//code to search for a item from the database
// user can enter any character to search for a value from the db
if (isset($_POST['search']))
{
$valueToSearch = $_POST['ValueToSearch'];
$query = "select * from client WHERE concat(`clientID`, `name`, `age`, `sex`, `weight`, `height`, `yearsExperience`, `goal`, `injuries`, 'email')like'%".$valueToSearch."%'";
$search_result = filterTable($query);
}
else {
$query = "select *
from client
where clientID in (select clientID from nutrition_plan where personaltrainerID=?)
or clientID in (select clientID from training_plan where personalTrainerID=?)";
$query->bind_param("i", $_POST[""]);
$search_result = filterTable($query);
}
//code to filter the db
function filterTable($query)
{
$connect = mysqli_connect("localhost:3308","root","","fypdatabase");
$filter_Result = mysqli_query($connect, $query);
return $filter_Result;
}
?>
<?php
while($row = mysqli_fetch_array($search_result))
{ //display the details from the db in the table with option to delete or update entry
?>
<tr>
<td><?php echo $row["clientID"]; ?></td>
<td><?php echo $row["name"]; ?></td>
<td><?php echo $row["age"]; ?></td>
<td><?php echo $row["sex"]; ?></td>
<td><?php echo $row["weight"]; ?></td>
<td><?php echo $row["height"]; ?></td>
<td><?php echo $row["yearsExperience"]; ?></td>
<td><?php echo $row["goal"]; ?></td>
<td><?php echo $row["injuries"]; ?></td>
<td><?php echo $row["email"]; ?></td>
<td>
<a href="?Delete=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Delete</a>
</td>
<td>
<a href="updateClient.php?Edit=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Update</a>
</td>
</tr>
<?php
<?php
//code to search for a item from the database
// user can enter any character to search for a value from the db
if (isset($_POST['search']))
{
$valueToSearch = $_POST['ValueToSearch'];
$query = "select * from client WHERE concat(`clientID`, `name`, `age`, `sex`, `weight`, `height`, `yearsExperience`, `goal`, `injuries`, 'email')like'%".$valueToSearch."%'";
$search_result = filterTable($query);
}
else {
$query = "select *
from client
where clientID in (select clientID from nutrition_plan where personaltrainerID=?)
or clientID in (select clientID from training_plan where personalTrainerID=?)";
$query->bind_param("i", $_POST[""]);
$search_result = filterTable($query);
}
//code to filter the db
function filterTable($query)
{
$connect = mysqli_connect("localhost:3308","root","","fypdatabase");
$filter_Result = mysqli_query($connect, $query);
return $filter_Result;
}
?>
<?php
while($row = mysqli_fetch_array($search_result))
{ //display the details from the db in the table with option to delete or update entry
?>
<tr>
<td><?php echo $row["clientID"]; ?></td>
<td><?php echo $row["name"]; ?></td>
<td><?php echo $row["age"]; ?></td>
<td><?php echo $row["sex"]; ?></td>
<td><?php echo $row["weight"]; ?></td>
<td><?php echo $row["height"]; ?></td>
<td><?php echo $row["yearsExperience"]; ?></td>
<td><?php echo $row["goal"]; ?></td>
<td><?php echo $row["injuries"]; ?></td>
<td><?php echo $row["email"]; ?></td>
<td>
<a href="?Delete=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Delete</a>
</td>
<td>
<a href="updateClient.php?Edit=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Update</a>
</td>
</tr>
<?php
选择*from client JOIN nutrition\u plan ON client.clientid=nutritionplan.clientid JOIN Personaltrainer ON personaltrainerID=nutritionplan.personaltrainerID Where Personaltrainer.personaltrainerID=id让我们看看我是否正确理解您的请求
<?php
//code to search for a item from the database
// user can enter any character to search for a value from the db
if (isset($_POST['search']))
{
$valueToSearch = $_POST['ValueToSearch'];
$query = "select * from client WHERE concat(`clientID`, `name`, `age`, `sex`, `weight`, `height`, `yearsExperience`, `goal`, `injuries`, 'email')like'%".$valueToSearch."%'";
$search_result = filterTable($query);
}
else {
$query = "select *
from client
where clientID in (select clientID from nutrition_plan where personaltrainerID=?)
or clientID in (select clientID from training_plan where personalTrainerID=?)";
$query->bind_param("i", $_POST[""]);
$search_result = filterTable($query);
}
//code to filter the db
function filterTable($query)
{
$connect = mysqli_connect("localhost:3308","root","","fypdatabase");
$filter_Result = mysqli_query($connect, $query);
return $filter_Result;
}
?>
<?php
while($row = mysqli_fetch_array($search_result))
{ //display the details from the db in the table with option to delete or update entry
?>
<tr>
<td><?php echo $row["clientID"]; ?></td>
<td><?php echo $row["name"]; ?></td>
<td><?php echo $row["age"]; ?></td>
<td><?php echo $row["sex"]; ?></td>
<td><?php echo $row["weight"]; ?></td>
<td><?php echo $row["height"]; ?></td>
<td><?php echo $row["yearsExperience"]; ?></td>
<td><?php echo $row["goal"]; ?></td>
<td><?php echo $row["injuries"]; ?></td>
<td><?php echo $row["email"]; ?></td>
<td>
<a href="?Delete=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Delete</a>
</td>
<td>
<a href="updateClient.php?Edit=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Update</a>
</td>
</tr>
<?php
<?php
//code to search for a item from the database
// user can enter any character to search for a value from the db
if (isset($_POST['search']))
{
$valueToSearch = $_POST['ValueToSearch'];
$query = "select * from client WHERE concat(`clientID`, `name`, `age`, `sex`, `weight`, `height`, `yearsExperience`, `goal`, `injuries`, 'email')like'%".$valueToSearch."%'";
$search_result = filterTable($query);
}
else {
$query = "select *
from client
where clientID in (select clientID from nutrition_plan where personaltrainerID=?)
or clientID in (select clientID from training_plan where personalTrainerID=?)";
$query->bind_param("i", $_POST[""]);
$search_result = filterTable($query);
}
//code to filter the db
function filterTable($query)
{
$connect = mysqli_connect("localhost:3308","root","","fypdatabase");
$filter_Result = mysqli_query($connect, $query);
return $filter_Result;
}
?>
<?php
while($row = mysqli_fetch_array($search_result))
{ //display the details from the db in the table with option to delete or update entry
?>
<tr>
<td><?php echo $row["clientID"]; ?></td>
<td><?php echo $row["name"]; ?></td>
<td><?php echo $row["age"]; ?></td>
<td><?php echo $row["sex"]; ?></td>
<td><?php echo $row["weight"]; ?></td>
<td><?php echo $row["height"]; ?></td>
<td><?php echo $row["yearsExperience"]; ?></td>
<td><?php echo $row["goal"]; ?></td>
<td><?php echo $row["injuries"]; ?></td>
<td><?php echo $row["email"]; ?></td>
<td>
<a href="?Delete=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Delete</a>
</td>
<td>
<a href="updateClient.php?Edit=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Update</a>
</td>
</tr>
<?php
select *
from client
where clientid in (select clientid from nutrition_plan where personaltrainerid = 123)
or clientid in (select clientid from training_plan where personaltrainerid = 123);
<?php
//code to search for a item from the database
// user can enter any character to search for a value from the db
if (isset($_POST['search']))
{
$valueToSearch = $_POST['ValueToSearch'];
$query = "select * from client WHERE concat(`clientID`, `name`, `age`, `sex`, `weight`, `height`, `yearsExperience`, `goal`, `injuries`, 'email')like'%".$valueToSearch."%'";
$search_result = filterTable($query);
}
else {
$query = "select *
from client
where clientID in (select clientID from nutrition_plan where personaltrainerID=?)
or clientID in (select clientID from training_plan where personalTrainerID=?)";
$query->bind_param("i", $_POST[""]);
$search_result = filterTable($query);
}
//code to filter the db
function filterTable($query)
{
$connect = mysqli_connect("localhost:3308","root","","fypdatabase");
$filter_Result = mysqli_query($connect, $query);
return $filter_Result;
}
?>
<?php
while($row = mysqli_fetch_array($search_result))
{ //display the details from the db in the table with option to delete or update entry
?>
<tr>
<td><?php echo $row["clientID"]; ?></td>
<td><?php echo $row["name"]; ?></td>
<td><?php echo $row["age"]; ?></td>
<td><?php echo $row["sex"]; ?></td>
<td><?php echo $row["weight"]; ?></td>
<td><?php echo $row["height"]; ?></td>
<td><?php echo $row["yearsExperience"]; ?></td>
<td><?php echo $row["goal"]; ?></td>
<td><?php echo $row["injuries"]; ?></td>
<td><?php echo $row["email"]; ?></td>
<td>
<a href="?Delete=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Delete</a>
</td>
<td>
<a href="updateClient.php?Edit=<?php echo $row["clientID"]; ?>" onclick="return confirm('Are you sure?');">Update</a>
</td>
</tr>
<?php
select *
from client
join
(
select 'nutrition' as kind, nutritionplanid as id, personaltrainerid, clientid
from nutrition_plan
union all
select 'training' as kind, trainingplanid as id, personaltrainerid, clientid
from training_plan
) plan using (clientid)
where clientid in (select clientid from nutrition_plan where personaltrainerid = 123)
or clientid in (select clientid from training_plan where personaltrainerid = 123);
如果他们被分配了一个训练/营养计划和/或？您可能需要一个简单的内部连接链，使用xxxid子句。或对不起，我来找钱！您的查询中有一个错误，请选择“从中选择*”，然后使用完整条件左连接，然后使用WHERE@Quasimodo“谢谢你！我该怎么写呢？谢谢，卡山，快到了！然而，结尾的id也是什么？这就是我的错误所在，personaltrainerID？这实际上应该显示，通过他的个人id或姓名，我得到了你，它不会抛出任何错误并运行，但是表中没有显示任何数据@Darán：这个查询向您提供一位私人教练、他们的营养计划和相关客户。如果按原样进行查询，即按字面上的id进行查询，那么您将查找trainer id 0，因为id表示一个名为id的列，并且由于该列不存在，MySQL默认为字符串“id”，由于这不是一个数字，它将转换为0。看起来不错，谢谢！当pesonaltrainerID来自数据库并且可以是任何数字时，例如，它会是什么而不是“123”？会是“？”来自数据库？这是什么意思？从另一个表中，例如，从personal_trainer中选择personaltrainerid，其中name='John Smith'？然后，您可以简单地用parantesses中的这个子查询替换123：。。。其中personaltrainerid=从personal_trainer中选择personaltrainerid，其中name='John Smith'；太好了，谢谢！所以我应该举你的第二个例子，如果这是你想要的。试试看，然后检查结果。查询会为您提供所有客户的所有计划，前提是至少有一个客户的计划由所需的培训师提供。我了解您。谢谢，我尝试了第一个查询，没有出现错误，但表中没有显示客户的输出！谢谢，太好了！！您会用什么代替1，以便在不同的培训师登录时可以使用不同的personaltrainerID？当然是这样的参数？准备好的声明。我什么时候包括？标记本身不返回任何结果，是否应该有另一行用于绑定参数？请看我上面编辑的例子！由于您已将问题标记为属于PHP，我希望您希望使用mysqli或DBO的prepare方法强烈建议这样做，因为将客户端数据直接插入SQL会使您的应用程序容易受到SQL注入攻击。我使用的是bind param，但在I for integer之后，我不知道要传递什么值$查询->绑定参数，$\u POST[]；-->不知道邮局在哪里意味着什么