想学但学不进去怎么办

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select * from tbl_Articles WHERE ArticleID=408789 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=408789 LIMIT 0,1
select * from tbl_Articles_sphinx where id=408789 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(192742,1120233,206223,151851,1092423,116221,213750,1073318,1114278,1118505,129640,1132227,161611,288714,259858,318106,325792,1076764,229259,1081083,1110974,1117920,324594,1061628,197185,1053162,215367,1126784,1118613,1109749) ORDER BY field (ArticleID,192742,1120233,206223,151851,1092423,116221,213750,1073318,1114278,1118505,129640,1132227,161611,288714,259858,318106,325792,1076764,229259,1081083,1110974,1117920,324594,1061628,197185,1053162,215367,1126784,1118613,1109749)