Database error: [Table 'ac_posts' is marked as crashed and should be repaired]

SELECT a.*, b.post_content FROM ac_posts a INNER JOIN ac_posts_content b ON a.ID = b.ID WHERE a.ID IN(4757434,658714,1481097,2184724,3054897,4070983,4304816,4418293,658470,658474,2565731,658289,812098,2570514,3303757,8950,29228,34544,41845,46516) ORDER BY FIELD(a.ID, 4757434,658714,1481097,2184724,3054897,4070983,4304816,4418293,658470,658474,2565731,658289,812098,2570514,3303757,8950,29228,34544,41845,46516);