You can simply use SUM()
function for that:
SELECT id
,SUM(CASE WHEN class = 'total' THEN value ELSE 0 END) AS value_total
,SUM(CASE WHEN class = 'shipping' THEN value ELSE 0 END) AS value_shipping
FROM Table1
GROUP BY id;
See this SQLFiddle
If you have unknown number of class then try this Dynamic query
SET @sql = NULL;
SELECT
GROUP_CONCAT(DISTINCT
CONCAT(
'SUM(case when class = ''',
class,
''' then value else 0 end) AS `value_',
class, '`'
)
) INTO @sql
FROM Table1;
SET @sql = CONCAT('SELECT id, ', @sql, '
FROM Table1
GROUP BY id');
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
Output:
╔════╦═════════════╦════════════════╗
║ ID ║ VALUE_TOTAL ║ VALUE_SHIPPING ║
╠════╬═════════════╬════════════════╣
║ 1 ║ 33 ║ 12 ║
║ 2 ║ 45 ║ 15 ║
╚════╩═════════════╩════════════════╝