数字321有什么含义

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select * from tbl_Articles WHERE ArticleID=149955 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=149955 LIMIT 0,1
select * from tbl_Articles_sphinx where id=149955 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1113249,1056968,1067897,1062856,1050037,1062138,1073588,1089522,1067233,1131867,1073698,1075423,1057674,1061282,1044673,1073100,1076059,1070650,1064944,1074888,1100075,1105605,1064977,1066704,1096739,1052647,1063329,1102214,1041345,1092185) ORDER BY field (ArticleID,1113249,1056968,1067897,1062856,1050037,1062138,1073588,1089522,1067233,1131867,1073698,1075423,1057674,1061282,1044673,1073100,1076059,1070650,1064944,1074888,1100075,1105605,1064977,1066704,1096739,1052647,1063329,1102214,1041345,1092185)