由表及里的及是什么意思

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select * from tbl_Articles WHERE ArticleID=2748463 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2748463 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2748463 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1114422,450532,1105429,932938,2791793,1095900,1105021,1089002,1111692,956001,793369,1097299,880084,795028,1101645,1108854,1303802,1115751,1109805,554497,628153,1084453,1115408,1116589,499365,1114376,677788,1110211,671361,1119488) ORDER BY field (ArticleID,1114422,450532,1105429,932938,2791793,1095900,1105021,1089002,1111692,956001,793369,1097299,880084,795028,1101645,1108854,1303802,1115751,1109805,554497,628153,1084453,1115408,1116589,499365,1114376,677788,1110211,671361,1119488)