關於Lucene分組查詢後的排序

int total = 0;

if (groupfield != null) 
// 如果不分組，直接對查詢結果進行返回
topdocs topfielddocs = null;
if (!"".equals(util.strnull(sortfield)))  else if (sortfield.startswith("nprice")) 
topfielddocs = searcher.search(query, end, new sort(new sortfield(sortfield, type, desc)));
} else 
total = topfielddocs.totalhits;

爛掉一塌糊塗 ，不在解釋！~

sql 查詢分組後每組的總條數

使用者表 t basic user 外來鍵 unitsid 單位表 t units select count b.id u.fensuo from t basic user as b t units as u where b.unitsid u.id group by u.fensuo 此查詢用於 ...

lucene查詢後關鍵字高亮顯示

query為查詢條件組合 htmlformatter htmlformatter new htmlformatter highlighter highlighter new highlighter htmlformatter,new queryscorer query highlighter.set...

groupby查詢分組後按條件查詢所需要的記錄

表結構 userlog idint userid intlogtime timestamp 一 按userid分組 查詢每個使用者最新一條登入記錄 1.select a.from userlog a,select userid,max logtime logtime from userlog gro...