I want to prevent the display of repeated row in database

PHP
1 
<?php
require_once('upper.php');
require_once('database.php');
require_once('LoginStatement.php');
$LoginId=$_COOKIE['LoginIdCookie'];
$query="select * from activity_participation where LoginId='$LoginId'";
$result=mysqli_query($dbc,$query) or die ('Not Connected');
//echo "<div class='search_output_data'>
echo "<table border='0' cellspacing='0' cellpadding='0'>";
while($row=mysqli_fetch_array($result))
{
echo "<tr><th align='left' valign='top'>Activity Title</th>
<th align='left' valign='top'>Date of Participation</th>
</tr>
<tr><td colspan='4' align='left' valign='top'><table align='left' border='0' cellspacing='0' cellpadding='0'><tr><td align='left' valign='top'>".$row['Title']."</td> <td align='left' valign='top'>".$row['Date']."</td> </tr></table>
</td></tr>";
}
echo "</table>";
//echo "</div>";
require_once('lower.php');
?>

In table activity_participation many rows have same values. I want to display only different rows to user not to display same rows again and again.
Or Anybody have idea to prevent the row duplication in database…
Help me plz…
thx in advance…

2

You could you the DISTINCT keyword in your query, once you figure out whether you need distinct titles and/or dates.

3

in both titles and dates…
Please tell me the exeact query…

4

please first do a SHOW CREATE TABLE for your table

then show a few rows of sample data

then show the result that you want to display for the sample rows you gave