充分不必要条件的口诀

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select * from tbl_Articles_data WHERE ArticleID=606934 LIMIT 0,1
select * from tbl_Articles_sphinx where id=606934 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(693229,442985,1111672,468346,1103544,2292761,2337149,3118358,1203781,1087723,3251925,1452580,527286,1087769,735773,1177213,1085552,3332926,1128732,2839389,2847339,3391128,607302,307737,713941,906580,2548474,3351490,1338837,417658) ORDER BY field (ArticleID,693229,442985,1111672,468346,1103544,2292761,2337149,3118358,1203781,1087723,3251925,1452580,527286,1087769,735773,1177213,1085552,3332926,1128732,2839389,2847339,3391128,607302,307737,713941,906580,2548474,3351490,1338837,417658)