两个矩阵相乘怎么算

页面:/news/view-2453111/ | 耗时:0.0120 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=2453111 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2453111 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2453111 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1097099,415176,378727,463563,413526,366801,367983,309749,388799,3441180,937444,473355,427393,462471,100532,433016,86668,587067,465820,422667,100457,499487,369559,805626,496369,1441450,358855,430999,494555,484747) ORDER BY field (ArticleID,1097099,415176,378727,463563,413526,366801,367983,309749,388799,3441180,937444,473355,427393,462471,100532,433016,86668,587067,465820,422667,100457,499487,369559,805626,496369,1441450,358855,430999,494555,484747)