如何确定天平最小称量值

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select * from tbl_Articles WHERE ArticleID=2705444 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2705444 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2705444 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1845958,1079592,987892,1104280,877060,1079255,1546173,2727450,1042020,217720,1043361,140985,3217385,545647,474613,266631,1428209,2098791,145845,1112632,1123977,781490,227173,1941902,873219,1132449,1052849,303977,1933138,1127027) ORDER BY field (ArticleID,1845958,1079592,987892,1104280,877060,1079255,1546173,2727450,1042020,217720,1043361,140985,3217385,545647,474613,266631,1428209,2098791,145845,1112632,1123977,781490,227173,1941902,873219,1132449,1052849,303977,1933138,1127027)