缩表是什么意思

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select * from tbl_Articles WHERE ArticleID=227754 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=227754 LIMIT 0,1
select * from tbl_Articles_sphinx where id=227754 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1070848,1370312,1050437,1275749,2624589,1067241,1056536,2765043,1414986,1062670,1791181,1093897,1052013,1073397,2705561,1374512,1078797,1065399,1056832,2797763,1056152,1067627,1101911,1570868,1070764,2701418,1068212,1352813,1285400,1078392) ORDER BY field (ArticleID,1070848,1370312,1050437,1275749,2624589,1067241,1056536,2765043,1414986,1062670,1791181,1093897,1052013,1073397,2705561,1374512,1078797,1065399,1056832,2797763,1056152,1067627,1101911,1570868,1070764,2701418,1068212,1352813,1285400,1078392)