mysql

Select query in MySQL

I want to select total comments posted on post. Somehow I am able to do it but the problem is that the total comment will show under each post even if there is no comment on the post.

Problem: Not able to get the comment related to post.

What I want :

To select total comment related to each post.

What I try :

SELECT SUM(total_comment) AS comment 
FROM   user_comment 
       INNER JOIN post 
               ON user_comment.image_id = post.id 
WHERE  status = 0 

SELECT SUM(total_comment) AS comment 
FROM   user_comment 
WHERE  status = 0

Both the queries return all (total) comment on all posts but I want only show comment related to specific post.

My post table

enter image description here

My Comment table

enter image description here

Result look like enter image description here

OR

enter image description here

But i want like

enter image description here

OR enter image description here

UPDATE:

I think that most of people don't understand what i am trying to ask? so i am posting the index.php code, where i access data from data base using while loop, and on the index.php page i want to access the total comment posted on specific post.

Index.php

<?php
session_start();
include 'conn.php';
if(!isset($_SESSION['user']))
{
    header('location:signin.php');
}



$smt=$conn->prepare("SELECT * FROM post,images WHERE post.Id=images.Id");
$smt->execute();
$smtt=$conn->prepare("SELECT * FROM post");
$smtt->execute();
$myres=$smtt->fetch(PDO::FETCH_OBJ);
$imgid=$myres->Id;
$imgname=$myres->File_Name;
$qry=$conn->prepare("SELECT SUM(Total_Comment) AS comment FROM user_comment WHERE Image_Id='".$imgid."' AND Image_Name='".$imgname."'");
$qry->execute();
$result=$qry->fetch(PDO::FETCH_OBJ );
$total_coment=$result->comment;
?>
<?php include 'header.php';?>
<?php
if(isset($_SESSION['user']))
{
    include 'nav.php';
}
else
{
    include 'nav-simple.php';
}
?>

    <div class="container-fluid">
    <?php include 'right_sidebar.php';?>
<div class="main-container-top" id="masonry-grid">
    <?php while($rows=$smt->fetch(PDO::FETCH_OBJ)): ?>

        <div class="col-md-3 grid-item post-col">
<img src="image/<?php echo $rows->Image_Name;?>" data-echo="image/<?php echo $rows->Image_Name;?>" class="post-image"/>

            <h5>Post On &nbsp;<?php echo $rows->Post_Date;?> <span class="pull-right">By <?php echo $rows->Post_By; ?></span> <span class="pull-right">Total Comment <?php echo $total_coment;?></span></h5>

            <a href="post-description.php?id=<?php echo $rows->Id ?>"> <h4><?php echo $rows->Post_Title;?></h4> </a>
            <p>
                <?php echo $rows->Post;?>
            </p>

        </div>


    <?php endwhile;?>
</div>
    </div>

<?php include 'footer-content.php';?>
<?php include 'footer.php';?>

Update 2

i know the reason that why the query show 2or 3 under each post and the reason is that the query select first or second id from table and count/sum it, but i am unable to resolve the issue, because i want total comment under each post, not one id comments under all post..

Note:

When i run the query on post-description page then it will work fine, but i want to show the number of total comment on each post on index.php page...

My post-description.php code

<?php
session_start();
include 'conn.php';
$pic_id='';
if(isset($_GET['id']))
{
    $pic_id=$_GET['id'];
}
$comv=$conn->prepare("SELECT * FROM user_comment WHERE user_comment.Image_Id='".$pic_id."'  AND user_comment.Status=0 AND user_comment.Comment_Status=1");
$comv->execute();
$fimg=$conn->prepare("SELECT Image_Name From Images WHERE Id='".$pic_id."'");
$fimg->execute();
$gimg=$fimg->fetch(PDO::FETCH_OBJ);
$pro=$conn->prepare("SELECT Profile_Picture FROM user_registration WHERE User_Name='".$_SESSION['user']."'");
$pro->execute();
$prof_img=$pro->fetch(PDO::FETCH_OBJ);
$smt=$conn->prepare("SELECT * FROM post,images WHERE post.Id = images.Id AND post.Id='".$pic_id."'");
$smt->execute();
$qry=$conn->prepare("SELECT COUNT(Total_Comment) AS comment FROM user_comment WHERE Status=0 AND Image_Id ='".$pic_id."'");
$qry->execute();
$result=$qry->fetch(PDO::FETCH_OBJ );
$total_coment=$result->comment;
?>
<?php include 'header.php';?>

<?php include 'nav.php';?>

<div class="container-fluid">
    <?php include 'right_sidebar.php';?>
<div class="col-md-1"></div>

    <div class="col-md-9 main-container-top container">
<?php while($rows=$smt->fetch(PDO::FETCH_OBJ)):?>
        <div class="media col-md-12 description-post">


           <img src="image/<?php echo $rows->Image_Name;?>" alt="<?php echo $rows->Image_Name;?>" class="img-rounded img-responsive media-left img-description"/>
            <div class="media-body">
               <h4 class="h4 description-heading"><?php echo $rows->Post_Title;?> <small class="pull-right"><i class="fa fa-comments-o fa-2x"></i> <?php echo $total_coment;?></small></h4>
                <p class="post-text text-justify text-info">

                    <?php echo $rows->Post;?>
            </div>
<?php endwhile;?>
        </div>

        <br/>

            <div class="media col-md-12 comment-section">
<?php
if(isset($_SESSION['comment-error']))
{
?>
    <span class="alert alert-warning col-md-6 container col-md-offset-3"><?php echo $_SESSION['comment-error']; ?></span>
    <?php
}
unset($_SESSION['comment-error']);
 if(isset($_SESSION['comment-success']))
{
?>
    <span class="alert alert-success col-md-6 container col-md-offset-3"><?php echo $_SESSION['comment-success']; ?></span>
    <?php
}
unset($_SESSION['comment-success']);
    ?>
                <br/>



                <?php while($gcom=$comv->fetch(PDO::FETCH_OBJ)):?>
                <span class="col-md-1 comment-pic"><img src="profile%20picture/<?php echo $gcom->Profile_Picture;?>" alt="post image" class="img-thumbnail img-responsive comment-img"/></span>
                <div class="media-body  comment-head col-md-10">
                    <h6 class="h6"><a href="#"> <?php echo $gcom->User_Name;?> </a> on <?php echo $gcom->On_Time;?></h6>
                    <p class="comment"><?php echo $gcom->Comment;?></p>
                </div>
                    <?php endwhile;?>
            </div>

        <br/>
        <div class="col-md-12 container">
            <h4 class="description-heading h4 text-muted">Share your thought</h4>
            <br/>
            <form action="comment.php" method="post" class="col-md-12" id="commentForm">
                <textarea name="comment" id="" cols="100" rows="5" placeholder="Your comment"></textarea>
                <input type="hidden" name='picture-name' value="<?php echo $gimg->Image_Name;?>"/>
                <input type="hidden" name="profile-pic" value="<?php echo $prof_img->Profile_Picture;?>"/>
                <input type="hidden" name="pic-id" value="<?php echo $pic_id;?>"/>
                <input type="hidden" name="image-id" value="<?php echo '?id='.$pic_id;?>"/>
                <br/>
                <input type="submit" value="Post" name="cmsg" id="" class="btn btn-info"/>
                <br/>
            </form>
        </div>
        <br/>



</div>

</div>
<?php include 'footer-content.php';?>
 <?php include 'footer.php';?>
Solution

  • Use this Query..

    SELECT COUNT(*) FROM user_comment INNER JOIN post ON user_comment.Image_Name = post.File_Name WHERE user_comment.Status = 0 AND user_comment.Image_Name = "your image id here";

    The query work fine, if not for you then just change your way to get data/total comment from mysql.