如何判断物体有磁性

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select * from tbl_Articles WHERE ArticleID=1287619 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1287619 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1287619 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1075967,1088924,1488567,2230748,1132415,1054832,1109973,1130158,1304141,1065705,1094511,1116727,1072625,1126815,166586,1080547,1092185,1001707,1077400,1080303,1102036,1372281,180258,1120372,2852218,3129728,1078883,1093230,1128885,1093266) ORDER BY field (ArticleID,1075967,1088924,1488567,2230748,1132415,1054832,1109973,1130158,1304141,1065705,1094511,1116727,1072625,1126815,166586,1080547,1092185,1001707,1077400,1080303,1102036,1372281,180258,1120372,2852218,3129728,1078883,1093230,1128885,1093266)