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(1158626,1901484,1924400,312452,1261530,1459975,2185542,730453,226572,360353,2221676,2902439,12291,30122,126728,183825,230189,276920,342092,342098) ORDER BY FIELD(a.ID, 1158626,1901484,1924400,312452,1261530,1459975,2185542,730453,226572,360353,2221676,2902439,12291,30122,126728,183825,230189,276920,342092,342098);