意下如何什么意思

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select * from tbl_Articles WHERE ArticleID=1740581 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1740581 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1740581 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1009691,1098437,1048024,730120,1109342,853985,582045,617820,543760,399609,1103027,1095126,1083589,1067129,610455,1082949,746713,866525,992419,614355,1063301,987174,1092778,1081161,581989,779315,1072236,451852,548016,1116025) ORDER BY field (ArticleID,1009691,1098437,1048024,730120,1109342,853985,582045,617820,543760,399609,1103027,1095126,1083589,1067129,610455,1082949,746713,866525,992419,614355,1063301,987174,1092778,1081161,581989,779315,1072236,451852,548016,1116025)