SET @sql = NULL;

SELECT

  GROUP_CONCAT(DISTINCT

               CONCAT('MAX(IF(s.name = "', `name`,'", `value`,"")) AS ',name)

              ) INTO @sql

FROM table1;

​

​

SET @sql = CONCAT('SELECT s.user_id,  ', @sql, ' 

                  FROM table1 s

                 GROUP BY s.user_id

                 ORDER BY s.user_id');

SELECT @sql;

PREPARE stmt FROM @sql;

EXECUTE stmt;

SELECT

  user_id,

  MAX(CASE WHEN name = "foo" THEN value END) "foo",

  MAX(CASE WHEN name = "bar" THEN value END) "bar",

  MAX(CASE WHEN name = "baz" THEN value END) "baz",

  MAX(CASE WHEN name = "quux" THEN value END) "quux",

  MAX(CASE WHEN name = "waldo" THEN value END) "waldo"

FROM table

GROUP BY user_id

ORDER BY user_id ASC