对角阵的行列式怎么求

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select * from tbl_Articles WHERE ArticleID=3268027 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=3268027 LIMIT 0,1
select * from tbl_Articles_sphinx where id=3268027 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1109054,1116089,1477901,3282285,606768,3294114,1572582,1112691,1104625,3238027,2728207,1565578,87078,1106414,1925651,1103202,561746,786604,3460874,886537,1237331,3233390,1188937,839005,923839,3410160,1202206,881924,437911,1100961) ORDER BY field (ArticleID,1109054,1116089,1477901,3282285,606768,3294114,1572582,1112691,1104625,3238027,2728207,1565578,87078,1106414,1925651,1103202,561746,786604,3460874,886537,1237331,3233390,1188937,839005,923839,3410160,1202206,881924,437911,1100961)