and什么意思

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select * from tbl_Articles WHERE ArticleID=436290 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=436290 LIMIT 0,1
select * from tbl_Articles_sphinx where id=436290 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(390177,3135655,1117900,2474523,476025,1094579,1122701,473237,379518,366873,364060,447952,1084453,426472,1104491,380487,1811040,385701,1121928,1323822,1091413,3092959,472592,402019,1120187,453453,1097221,378148,470815,419031) ORDER BY field (ArticleID,390177,3135655,1117900,2474523,476025,1094579,1122701,473237,379518,366873,364060,447952,1084453,426472,1104491,380487,1811040,385701,1121928,1323822,1091413,3092959,472592,402019,1120187,453453,1097221,378148,470815,419031)