内存储器分为哪两大类

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select * from tbl_Articles WHERE ArticleID=679447 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=679447 LIMIT 0,1
select * from tbl_Articles_sphinx where id=679447 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2056424,1069843,123906,1900075,1882950,275239,178546,2530441,444020,2400200,420735,236393,825510,1107357,1118543,2228080,1055920,1082936,2447073,1123398,1117179,129455,3196133,2059353,941351,1129797,1303572,140345,520984,1083167) ORDER BY field (ArticleID,2056424,1069843,123906,1900075,1882950,275239,178546,2530441,444020,2400200,420735,236393,825510,1107357,1118543,2228080,1055920,1082936,2447073,1123398,1117179,129455,3196133,2059353,941351,1129797,1303572,140345,520984,1083167)