如何计算负序电流

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select * from tbl_Articles WHERE ArticleID=414983 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=414983 LIMIT 0,1
select * from tbl_Articles_sphinx where id=414983 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2854991,151734,374150,197474,1566123,883757,1058415,1093321,1645614,370219,577850,1077000,729614,1513131,2115008,772848,1488724,2325049,3013284,143997,1396922,2206106,602304,2404915,2416559,3021742,1943106,1298719,1123281,472521) ORDER BY field (ArticleID,2854991,151734,374150,197474,1566123,883757,1058415,1093321,1645614,370219,577850,1077000,729614,1513131,2115008,772848,1488724,2325049,3013284,143997,1396922,2206106,602304,2404915,2416559,3021742,1943106,1298719,1123281,472521)