如何判定两条直线平行

页面:/news/view-618800/ | 耗时:0.4965 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=618800 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=618800 LIMIT 0,1
select * from tbl_Articles_sphinx where id=618800 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2659672,2362086,328157,2066242,281495,1081051,3442975,1087805,1083103,1321027,1062566,1119510,1770240,1054610,1066426,2678812,1096837,1125395,403130,1877470,2607095,235640,1125060,390868,1075823,717433,730589,901464,2846986,2659655) ORDER BY field (ArticleID,2659672,2362086,328157,2066242,281495,1081051,3442975,1087805,1083103,1321027,1062566,1119510,1770240,1054610,1066426,2678812,1096837,1125395,403130,1877470,2607095,235640,1125060,390868,1075823,717433,730589,901464,2846986,2659655)