PP: MATCH('@keyword "수학" "교육"') AND nImageType in (1,9) AND emContentsState = 1:PPSELECT * FROM iccas_index_table WHERE MATCH('@keyword "수학" "교육"') AND nImageType in (1,9) AND emContentsState = 1 ORDER BY random_nScore DESC LIMIT 0,50 OPTION max_matches=50