两个复数相减得出的是什么数

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select * from tbl_Articles WHERE ArticleID=1664622 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1664622 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1664622 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1086290,1063151,1086063,1105645,2555445,1041948,1107727,1057471,987495,1068358,1086608,1109410,1074670,1075503,3275185,1100983,1078076,1076277,1108976,1072093,1072809,1114222,1080444,3267405,1076241,1081195,1114435,1450002,1328815,1093897) ORDER BY field (ArticleID,1086290,1063151,1086063,1105645,2555445,1041948,1107727,1057471,987495,1068358,1086608,1109410,1074670,1075503,3275185,1100983,1078076,1076277,1108976,1072093,1072809,1114222,1080444,3267405,1076241,1081195,1114435,1450002,1328815,1093897)