为什么要学因式分解

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select * from tbl_Articles WHERE ArticleID=1600413 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1600413 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1600413 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(179829,2083928,1921009,295579,125436,1489432,321265,1127931,1114090,1069395,140802,1105687,1071843,363670,224570,199086,1015145,1122220,1111326,292126,130996,120045,1303489,139304,217606,1092139,203004,1079534,1080086,128918) ORDER BY field (ArticleID,179829,2083928,1921009,295579,125436,1489432,321265,1127931,1114090,1069395,140802,1105687,1071843,363670,224570,199086,1015145,1122220,1111326,292126,130996,120045,1303489,139304,217606,1092139,203004,1079534,1080086,128918)