测光的作用是什么

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select * from tbl_Articles WHERE ArticleID=2881207 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2881207 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2881207 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1061282,1101911,1101394,1049344,1130400,1113790,1064447,3321802,1090945,3449156,1073437,1098809,1076720,1104045,1100211,1059915,1109607,1091900,1074923,1133273,1100308,1131967,1108307,1091757,1057471,1102710,1064663,999794,1124433,1079950) ORDER BY field (ArticleID,1061282,1101911,1101394,1049344,1130400,1113790,1064447,3321802,1090945,3449156,1073437,1098809,1076720,1104045,1100211,1059915,1109607,1091900,1074923,1133273,1100308,1131967,1108307,1091757,1057471,1102710,1064663,999794,1124433,1079950)