12的负三次方为什么等于8

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select * from tbl_Articles WHERE ArticleID=2582786 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2582786 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2582786 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1042943,1070578,1090699,1084197,1063675,1075815,1107997,1061426,1103941,1102712,1077104,1093140,1118134,1068774,1049670,1095063,1089742,1072831,1132329,1069335,1077892,1077240,1069928,1042879,1087926,1086394,1072837,1109799,1102438,1104847) ORDER BY field (ArticleID,1042943,1070578,1090699,1084197,1063675,1075815,1107997,1061426,1103941,1102712,1077104,1093140,1118134,1068774,1049670,1095063,1089742,1072831,1132329,1069335,1077892,1077240,1069928,1042879,1087926,1086394,1072837,1109799,1102438,1104847)