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(1578736,58634,816418,4203567,1529466,920286,1350053,1409808,1465190,1696377,2426069,2631417,3245512,3448510,3577717,3609653,3844980,4148387,4628437,4922764) ORDER BY FIELD(a.ID, 1578736,58634,816418,4203567,1529466,920286,1350053,1409808,1465190,1696377,2426069,2631417,3245512,3448510,3577717,3609653,3844980,4148387,4628437,4922764);