有些人身份证号是x那么这个x是什么意思

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select * from tbl_Articles_data WHERE ArticleID=913544 LIMIT 0,1
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SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1111154,1128577,1109729,1123589,1120693,1113664,1121010,1125321,1115113,1121934,1129995,1088465,1130848,1128397,1129727,1124414,1082852,1082171,1112530,1124959,1082377,1123370,1123384,1126758,1104270,1092708,1127429,1128133,1128004,1123064) ORDER BY field (ArticleID,1111154,1128577,1109729,1123589,1120693,1113664,1121010,1125321,1115113,1121934,1129995,1088465,1130848,1128397,1129727,1124414,1082852,1082171,1112530,1124959,1082377,1123370,1123384,1126758,1104270,1092708,1127429,1128133,1128004,1123064)