逻辑顺序包括哪些

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select * from tbl_Articles WHERE ArticleID=2506390 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2506390 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2506390 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(578490,840565,1205669,594208,595672,667246,1087864,509081,671643,903257,1737308,1085232,442346,455325,767897,100484,919340,530279,407598,414096,743149,536533,739371,1082294,3249918,841562,455373,655733,839794,865400) ORDER BY field (ArticleID,578490,840565,1205669,594208,595672,667246,1087864,509081,671643,903257,1737308,1085232,442346,455325,767897,100484,919340,530279,407598,414096,743149,536533,739371,1082294,3249918,841562,455373,655733,839794,865400)