如何确定两条直线的位置关系

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select * from tbl_Articles WHERE ArticleID=1930625 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1930625 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1930625 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1057447,1104745,1085154,1063309,993285,1105065,1087805,1106944,1093206,1046666,1079956,1062930,1080098,1086091,1086530,1067505,1098442,1077960,1062756,1103680,1110017,1112917,1082318,1096719,1063329,1096653,1105543,1103895,1076313,1132159) ORDER BY field (ArticleID,1057447,1104745,1085154,1063309,993285,1105065,1087805,1106944,1093206,1046666,1079956,1062930,1080098,1086091,1086530,1067505,1098442,1077960,1062756,1103680,1110017,1112917,1082318,1096719,1063329,1096653,1105543,1103895,1076313,1132159)