datatables and SUM

[An7hony]

I am using datatables.net and want to include a SUM() on this query below:

 

$sQuery = "
SELECT SQL_CALC_FOUND_ROWS * FROM
(SELECT p.people_id, p.people_firstName, p.people_surname, p.people_address, p.people_town, p.people_county, p.people_postcode, SUM(r.relationships_id)
FROM People p LEFT JOIN Relationships r ON p.people_id = r.people_id) sel
$sWhere
$sOrder
$sLimit
";

 

This is only returning one row (should return around 2k records in the database)

 

I have tried adding GROUP BY

 

        $sQuery = "
SELECT SQL_CALC_FOUND_ROWS * FROM
(SELECT p.people_id, p.people_firstName, p.people_surname, p.people_address, p.people_town, p.people_county, p.people_postcode, SUM(r.relationships_id)
FROM People p LEFT JOIN Relationships r ON p.people_id = r.people_id GROUP BY r.relationships_id) sel
$sWhere
$sOrder  
$sLimit
";

 

Although this is throwing a JSON format error

 

Below is my full code:

<?php
    
    
    $aColumns = array('people_id', 'people_firstName', 'people_surname', 'people_address', 'people_town', 'people_county', 'people_postcode', 'relationships_id', 'people_id');

    
    /* Indexed column (used for fast and accurate table cardinality) */
    $sIndexColumn = "people_id";
    
    /* DB table to use */
    $sTable = "People";
    
    
    
    /*
     * Paging
     */
    $sLimit = "";
    if ( isset( $_GET['iDisplayStart'] ) && $_GET['iDisplayLength'] != '-1' )
    {
        $sLimit = "LIMIT ".intval( $_GET['iDisplayStart'] ).", ".
            intval( $_GET['iDisplayLength'] );
    }
    
    
    /*
     * Ordering
     */
    $sOrder = "";
    if ( isset( $_GET['iSortCol_0'] ) )
    {
        $sOrder = "ORDER BY ";
        for ( $i=0 ; $i<intval( $_GET['iSortingCols'] ) ; $i++ )
        {
            if ( $_GET[ 'bSortable_'.intval($_GET['iSortCol_'.$i]) ] == "true" )
            {
                $sOrder .= "`".$aColumns[ intval( $_GET['iSortCol_'.$i] ) ]."` ".
                    ($_GET['sSortDir_'.$i]==='asc' ? 'asc' : 'desc') .", ";
            }
        }
        
        $sOrder = substr_replace( $sOrder, "", -2 );
        if ( $sOrder == "ORDER BY" )
        {
            $sOrder = "";
        }
    }
    
    
    /*
     * Filtering
     * NOTE this does not match the built-in DataTables filtering which does it
     * word by word on any field. It's possible to do here, but concerned about efficiency
     * on very large tables, and MySQL's regex functionality is very limited
     */
    $sWhere = "";
    if ( isset($_GET['sSearch']) && $_GET['sSearch'] != "" )
    {
        $sWhere = "WHERE (";
        for ( $i=0 ; $i<count($aColumns) ; $i++ )
        {
            $sWhere .= "`".$aColumns[$i]."` LIKE '%".mysql_real_escape_string( $_GET['sSearch'] )."%' OR ";
        }
        $sWhere = substr_replace( $sWhere, "", -3 );
        $sWhere .= ')';
    }
    
    /* Individual column filtering */
    for ( $i=0 ; $i<count($aColumns) ; $i++ )
    {
        if ( isset($_GET['bSearchable_'.$i]) && $_GET['bSearchable_'.$i] == "true" && $_GET['sSearch_'.$i] != '' )
        {
            if ( $sWhere == "" )
            {
                $sWhere = "WHERE ";
            }
            else
            {
                $sWhere .= " AND ";
            }
            $sWhere .= "`".$aColumns[$i]."` LIKE '%".mysql_real_escape_string($_GET['sSearch_'.$i])."%' ";
        }
    }

        
        $sQuery = "
SELECT SQL_CALC_FOUND_ROWS * FROM
(SELECT p.people_id, p.people_firstName, p.people_surname, p.people_address, p.people_town, p.people_county, p.people_postcode, r.relationships_id
FROM People p LEFT JOIN Relationships r ON p.people_id = r.people_id) sel
$sWhere
$sOrder
$sLimit
";
    // http://datatables.net/forums/discussion/2774/sql-join-two-tables/p1    
        
    $rResult = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());
    
    /* Data set length after filtering */
    $sQuery = "
        SELECT FOUND_ROWS()
    ";
    $rResultFilterTotal = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());
    $aResultFilterTotal = mysql_fetch_array($rResultFilterTotal);
    $iFilteredTotal = $aResultFilterTotal[0];
    
    /* Total data set length */
    $sQuery = "
        SELECT COUNT(`".$sIndexColumn."`)
        FROM $sTable
    ";
    $rResultTotal = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());
    $aResultTotal = mysql_fetch_array($rResultTotal);
    $iTotal = $aResultTotal[0];
    
    
    /*
     * Output
     */
    $output = array(
        "sEcho" => intval($_GET['sEcho']),
        "iTotalRecords" => $iTotal,
        "iTotalDisplayRecords" => $iFilteredTotal,
        "aaData" => array()
    );
    
    
    
    while ( $aRow = mysql_fetch_array( $rResult ) )
    {
        $row = array();
        for ( $i=0 ; $i<count($aColumns) ; $i++ )
        {
            if ( $aColumns[$i] == "relationships_id" )
            {
                
                
                /* Special output formatting for 'version' column */
                $row[] = ($aRow[ $aColumns[$i] ]=="") ? '0' : $aRow[ $aColumns[$i] ];
            }
            else if ( $aColumns[$i] != ' ' )
            {
                /* General output */
                $row[] = $aRow[ $aColumns[$i] ];
            }
        }
        $output['aaData'][] = $row;
    }
    
    echo json_encode( $output );
?>

Can any one help?

[An7hony]

Got it

[vinny42]

Post your solution, because what you were trying with group by is wrong.

Edited October 2, 2013 by vinny42