感谢您阅读我的问题
我正在尝试将 repair_jobs 中的* clients_id *显示为联系人
中的名称但我没有运气 我有2个SQL查询是错的吗?
第1次
$query = "select * from repair_jobs";
这有助于我显示我需要的有关repair_jobs和作品
字段的信息这是第二次
$query = "SELECT repair_jobs.client_id, contacts.name
FROM repair_jobs
INNER JOIN contacts
ON repair_jobs.client_id=contacts.name";
在此之下,我试图显示客户端的名称
echo "<td>{$client_id}</td>";
但它只显示我需要的数字而不是数据(客户名称)
我错过了什么吗?client_id(repair_jobs)是一个数字,与id(联系人)相同,但想要显示名称(联系人)
客户
Id – name – surname – phone – address
修理
Id – clients_id (same as id in clients) – unit – date – price
<?php
//include database connection
include 'db_connect.php';
//query all records from the database
$query = "select * from repair_jobs";
//execute the query
$result = $mysqli->query( $query );
//get number of rows returned
$num_results = $result->num_rows;
//this will link us to our add.php to create new record
if( $num_results > 0){ //it means there's already a database record
//start table
//creating our table heading
echo " <table class='table_basic'>";
echo "<thead><tr>";
echo "<th>Job #</th>";
echo "<th>Name Of Unit</th>";
echo "<th>Client</th>";
echo "<th>Estimated Value</th>";
echo "</thead></tr><tbody><tr>";
//loop to show each records
while( $row = $result->fetch_assoc() ){
//extract row
//this will make $row['firstname'] to
//just $firstname only
extract($row);
//creating new table row per record
echo "<tr>";
echo "<td width='40px'><a href='rdetails.php?id={$id}'># {$id}</a></td>";
echo "<td>{$rmake} {$rmodel}</td>";
$query = "SELECT rj.client_id, c.name AS client_name FROM repair_jobs rj INNER JOIN contacts c ON rj.client_id=c.id";
echo "<td>{$client_name}</td>";
echo '<td align="center"><span class="badge badge-success">£';
$lhours = $labour;
$repaircosts = $ourcosts;
$labourpay = $labourcharge;
$sum_total = $repaircosts +($lhours * $labourpay);
print ($sum_total);
echo '</span></td>';
echo "</td>";
echo "";
}
echo "</tr></table>";//end table
}else{
//if database table is empty
echo "No records found.";
}
//disconnect from database
$result->free();
$mysqli->close();
?>
答案 0 :(得分:2)
将第一个查询更改为连接查询,因为没有理由在代码中间执行第二个查询。 (你也从未执行过那个查询)。
//query all records from the database
$query = "SELECT repair_jobs.*, contacts.name as client_name
FROM repair_jobs
INNER JOIN contacts
ON repair_jobs.client_id=contacts.id";
然后在你的表格中保留$client_name
echo "<td>{$client_name}</td>";
答案 1 :(得分:1)
<?php
include 'db_connect.php';
$query = "SELECT rj.Id AS job_number, rj.unit, rj.make, rj.model, c.name AS client_name, rj.price FROM repair_jobs rj INNER JOIN contacts c ON rj.clients_id = c.id ORDER BY c.date";
$result = $mysqli->query( $query );
$num_results = $result->num_rows;
if( $num_results > 0){ //it means there's already a database record
echo " <table class='table_basic'>";
echo "<thead><tr>";
echo "<th>Job #</th>";
echo "<th>Name Of Unit</th>";
echo "<th>Client</th>";
echo "<th>Estimated Value</th>";
echo "</tr></thead><tbody>";
while( $row = $result->fetch_assoc() ){
extract($row);
echo "<tr>";
echo "<td width='40px'><a href='rdetails.php?id={$job_number}'>#{$job_number}</a></td>";
echo "<td>{$make} {$model}</td>";
echo "<td>{$client_name}</td>";
echo "<td align='center'><span class='badge badge-success'>£";
$lhours = $labour;
$repaircosts = $ourcosts;
$labourpay = $labourcharge;
$sum_total = $repaircosts +($lhours * $labourpay);
echo $sum_total;
echo '</span></td>';
echo "</td>";
echo "</tr>";
}
echo "</tbody></table>";
} else {
echo "No records found.";
}
$result->free();
$mysqli->close();
?>