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(257583,3098435,255483,2772817,1304052,49952,1583469,2186151,2190905,50755,91838,600554,894975,911346,1127335,1153394,1272169,1502622,1589389,1905421) ORDER BY FIELD(a.ID, 257583,3098435,255483,2772817,1304052,49952,1583469,2186151,2190905,50755,91838,600554,894975,911346,1127335,1153394,1272169,1502622,1589389,1905421);