解释一下十八相送的意思

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select * from tbl_Articles WHERE ArticleID=1695014 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1695014 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1695014 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1075777,1045867,1043756,1081835,1105605,3449156,1064531,1073503,983962,1069922,1054388,1062646,1079191,1071077,981687,1071645,1085390,1062346,1045659,1081895,1047285,1041729,1081181,3272835,1070732,1081757,1071121,1065359,1048220,1067924) ORDER BY field (ArticleID,1075777,1045867,1043756,1081835,1105605,3449156,1064531,1073503,983962,1069922,1054388,1062646,1079191,1071077,981687,1071645,1085390,1062346,1045659,1081895,1047285,1041729,1081181,3272835,1070732,1081757,1071121,1065359,1048220,1067924)