SQL query doesn't give the right result

Question

I have a form where people can search the database for four values: Location, Period, Day and Service. I always do not get the results that I want.

If I use AND, people need to fill in everything. If I use OR I get the complete database. I want to be able to search the database for those one to 4 things. Is there a way how I can do this?

Is there maybe a way to check which fields are filled in, and that the query is automatically changed with the filled in fields?

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"     "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>Zoeken</title>

</head>
<body>
<p><a href="new.php"><img src="add.png" width="20px" height="20px"/></a> |   <a href="search.php"><img src="search.png" width="20px" height="20px"/></a> | <a  href="search_lijnen.php"><img src="number.png" width="20px" height="20px"/></a>  </p>
<form action="" method="post">
<div>
<table>
<tr><td><strong>Locatie: </strong></td><td><input type="text" name="Locatie" value="" /></td> </tr>
<tr><td><strong>Periode: </strong></td><td><input type="text" name="Periode" value="" /></td> </tr>
<tr><td><strong>Dag: </strong></td><td><input type="text" name="Dag" value="" /></td> </tr>
<tr><td><strong>Dienst: </strong></td> <td><input type="text" name="Dienst" value="" /></td></tr>
<tr><td></td><td><input type="submit" name="zoeken" value="Zoeken"></td></tr>
</table>

</div>

 </form> 
 <p><a href="new.php"><img src="add.png" width="20px" height="20px"/></a> | <a href="search.php"><img src="search.png" width="20px" height="20px"/></a> | <a href="search_lijnen.php"><img src="number.png" width="20px" height="20px"/></a> </p>
</body>
</html> 
<?php


if (isset($_POST['zoeken']))
 { 
include('connect-db.php');
$Locatie =  $_POST['Locatie'];
$Periode =  $_POST['Periode'];
$Dag =  $_POST['Dag'];
$Dienst =  $_POST['Dienst'];

// get results from database
$result = mysql_query("SELECT * FROM WMC_DeLijn WHERE Locatie='$Locatie' ANY Periode='$Periode' ANY Dag='$Dag'ANY Dienst='$Dienst' ") 
    or die(mysql_error()); 
// display data in table
echo "<h2>Resultaten:</h2><p>";
echo "<table border='1' cellpadding='10'>";
echo "<table><tr><th>ID</th><th>Locatie</th><th>Periode</th><th>Dag</th><th>Dienst</th><th>Delen</th><th>Geleed</th><th>Start 1</th><th>Eind 1</th><th>Start 2</th><th>Eind 2</th><th>Lijnen</th></tr>";


// loop through results of database query, displaying them in the table
while($row = mysql_fetch_array( $result )) {

    // echo out the contents of each row into a table
    echo "<tr>";
    echo '<td align="center">' . $row['id'] . '</td>';
    echo '<td align="center">' . $row['Locatie'] . '</td>';
    echo '<td align="center">' . $row['Periode'] . '</td>';
    echo '<td align="center">' . $row['Dag'] . '</td>';
    echo '<td align="center">' . $row['Dienst'] . '</td>';
    echo '<td align="center">' . $row['Delen'] . '</td>';
    echo '<td align="center">' . $row['Geleed'] . '</td>';
    echo '<td align="center">' . $row['Start1'] . '</td>';
    echo '<td align="center">' . $row['Eind1'] . '</td>';
    echo '<td align="center">' . $row['Start2'] . '</td>';
    echo '<td align="center">' . $row['Eind2'] . '</td>';
    echo '<td align="center">' . $row['Lijnen'] . '</td>';
    //Link to edit record
    echo '<td align="center"><a href="edit.php?id=' . $row['id'] . '"><img src="edit.png" width="20px" height="20px"/></a></td>';
    // Link to delete record
    echo '<td align="center"><a href="delete.php?id=' . $row['id'] . '"><img src="delete.png" width="20px" height="20px"/></a></td>';
     //Link to Add Event to Google Calendar
    echo '<td align="center"><a href="Add_Event.php?id=' . $row['id'] . '"><img src="proceed.png" width="20px" height="20px"/></a></td>';
    echo "</tr>"; 
}}
// close table>
echo "</table>"; 

?>

Answer 1

您可以动态构建查询字符串，仅在参数不是伪造的情况下添加WHERE子句语句，或者像这样在SQL本身中添加条件： WHERE (col = ? OR '' = ?) AND (col2 = ? OR '' = ?) 。

Answer 2

Change your query to have either a AND condition or a OR condition like

SELECT * FROM WMC_DeLijn 
WHERE Locatie='$Locatie' 
AND Periode='$Periode' 
AND Dag='$Dag' 
AND ienst='$Dienst';

(OR)

SELECT * FROM WMC_DeLijn 
WHERE Locatie='$Locatie' 
OR Periode='$Periode' 
OR Dag='$Dag' 
OR ienst='$Dienst';

SQL query doesn't give the right result

Question

2 answers

solution1
0 ACCPTED 2015-07-14 23:54:02

solution2
0 2015-07-14 23:58:41

SQL query doesn't give the right result

Question

2 answers

solution1 0 ACCPTED 2015-07-14 23:54:02

solution2 0 2015-07-14 23:58:41

solution1
0 ACCPTED 2015-07-14 23:54:02

solution2
0 2015-07-14 23:58:41