Question

我正在使用数据表v 1.10.19，就像我在使用以下命令一样，group by破坏了分页并且只显示一页。

        $where = "recipient='".$recipient."' AND grouped='' GROUP BY id DESC";
        echo json_encode(
            SSP::complex( $_GET, $sql_details, $table, $primaryKey, $columns, null, $where )
        );

这是为此的复杂功能：

static function complex ( $request, $conn, $table, $primaryKey, $columns, $whereResult=null, $whereAll=null )
{
    $bindings = array();
    $db = self::db( $conn );
    $localWhereResult = array();
    $localWhereAll = array();
    $whereAllSql = '';

    // Build the SQL query string from the request
    $limit = self::limit( $request, $columns );
    $order = self::order( $request, $columns );
    $where = self::filter( $request, $columns, $bindings );

    $whereResult = self::_flatten( $whereResult );
    $whereAll = self::_flatten( $whereAll );

    if ( $whereResult ) {
        $where = $where ?
            $where .' AND '.$whereResult :
            'WHERE '.$whereResult;
    }

    if ( $whereAll ) {
        $where = $where ?
            $where .' AND '.$whereAll :
            'WHERE '.$whereAll;

        $whereAllSql = 'WHERE '.$whereAll;
    }

    // Main query to actually get the data
    $data = self::sql_exec( $db, $bindings,
        "SELECT `".implode("`, `", self::pluck($columns, 'db'))."`
         FROM `$table`
         $where
         $order
         $limit "
    );

    // Data set length after filtering
    $resFilterLength = self::sql_exec( $db, $bindings,
        "SELECT COUNT(`{$primaryKey}`)
         FROM   `$table`
         $where"
    );
    if(empty($resFilterLength)){$recordsFiltered="['1','2']";}else{
    $recordsFiltered = $resFilterLength[0][0];
    }       
    //$recordsFiltered = $resFilterLength[0][0];

    // Total data set length
    $resTotalLength = self::sql_exec( $db, $bindings,
        "SELECT COUNT(`{$primaryKey}`)
         FROM   `$table` ".
        $whereAllSql
    );
    if(empty($resTotalLength)){$recordsTotal="['1','2']";}else{
    $recordsTotal = $resTotalLength[0][0];
    }           
    //$recordsTotal = $resTotalLength[0][0];

    /*
     * Output
     */
    return array(
        "draw"            => isset ( $request['draw'] ) ?
            intval( $request['draw'] ) :
            0,
        "recordsTotal"    => intval( $recordsTotal ),
        "recordsFiltered" => intval( $recordsFiltered ),
        "data"            => self::data_output( $columns, $data )
    );
}

问题是应该添加/更改为GROUP BY子句添加支持的内容。但是，我可以使用datatables以下属性使它显示GROUP BY DESC，但如果是服务器端，则更好：

'order': [4, 'desc'],

更新：

如@scaisEdge所建议：

对于第一个建议，我更改了以下内容：

    // Data set length after filtering
    $resFilterLength = self::sql_exec( $db, $bindings,
        "SELECT COUNT(`{$primaryKey}`)
         FROM   `$table`
         $where"
    );

TO

    // Data set length after filtering
    $resFilterLength = self::sql_exec( $db, $bindings,
        "SELECT COUNT(`{$primaryKey}`)
         FROM   `$table`".
         $where
    );

第二个建议：

从ssp :: complex json编码语句和
中删除了GROUP BY子句

    // Main query to actually get the data
    $data = self::sql_exec( $db, $bindings,
        "SELECT `".implode("`, `", self::pluck($columns, 'db'))."`
         FROM `$table`
         $where
         $order
         $limit "
    );

TO

// Main query to actually get the data
$data = self::sql_exec( $db, $bindings,
    "SELECT `".implode("`, `", self::pluck($columns, 'db'))."`
     FROM `$table`
     $where GROUP BY id DESC
     $order
     $limit "
);

工作完美：）

Answer 1

两个建议

1），在此代码中，您应该对$ where使用字符串连接

$resFilterLength = self::sql_exec( $db, $bindings,
    "SELECT COUNT(`{$primaryKey}`)
     FROM   `$table` " .   $where 
);

2）似乎您对分组后的分页进行了限制和偏移量排序（并且分组ID DESC是错误的）

   $where = "recipient='".$recipient."' AND grouped=''  
    GROUP BY id ORDER BY id DESC LIMIT 10 OFFSET 5";

Answer 2

上述更改之后，可以通过ssp :: complex（）语句轻松地传递group by子句或任何其他子句，如下所示：

        $where = "recipient='".$recipient."' AND grouped=''";
        $extra ='GROUP BY id DESC';
        echo json_encode(
            SSP::complex( $_GET, $sql_details, $table, $primaryKey, $columns, null, $where, $extra )
        );

更改SSP.CLASS.PHP的复杂功能之后：

static function complex ( $request, $conn, $table, $primaryKey, $columns, $whereResult=null, $whereAll=null)

TO

static function complex ( $request, $conn, $table, $primaryKey, $columns, $whereResult=null, $whereAll=null, $extra=null )

AND

// Main query to actually get the data
$data = self::sql_exec( $db, $bindings,
    "SELECT `".implode("`, `", self::pluck($columns, 'db'))."`
     FROM `$table`
     $where
     $order
     $limit "
);

TO

// Main query to actually get the data
$data = self::sql_exec( $db, $bindings,
    "SELECT `".implode("`, `", self::pluck($columns, 'db'))."`
     FROM `$table`
     $where $extra
     $order
     $limit "
);

在复杂功能中向ssp类添加GROUP BY支持

2 个答案: