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(1578323,2459081,4300265,225714,689128,781963,819580,998691,1239976,1365542,1683950,1751230,1950859,2548547,2585847,3527119,3580977,3581659,3866132,3866133) ORDER BY FIELD(a.ID, 1578323,2459081,4300265,225714,689128,781963,819580,998691,1239976,1365542,1683950,1751230,1950859,2548547,2585847,3527119,3580977,3581659,3866132,3866133);