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                ## Query主要操作簡介 Query接口分為倆類: 一部分是觸發查詢和更新操作,api分別是 - select 觸發查詢,返回指定的對象列表 - single 觸發查詢,返回一個對象,如果沒有,返回null - unique 觸發查詢,返回一個對象,如果沒有,或者有多個,拋出異常 - count 對查詢結果集求總數 - delete 刪除符合條件的結果集 - update 全部字段更新,包括更新null值 - updateSelective 更新選中的結果集(null不更新) - insert 全部字段插入,包括插入null值 - insertSelective 有選擇的插入,null不插入 另外一部分是各種條件: 標準sql操作符 | and操作|or操作 ----|------|----- ==,!= | andEq,andNotEq | orEq,orNotEq **>**,>=| andGreat,andGreatEq | orGreat,orGreatEq <,<= | andLess,andLessEq | orLess,orLessEq LIKE,NOT LIKE| andLike,andNotLike | orLike,orNotLike IS NULL,IS NOT NULL| andIsNull,andIsNotNull | orIsNull,orIsNotNull IN,NOT IN| andIn ,andNotIn | orIn ,orNotIn BETWEEN ,NOT BETWEEN| andBetween,andNotBetween | orBetween,orNotBetween AND ( .....)| and | or 標準sql | Query方法 ----|------ 限制結果結范圍,依賴于不同數據庫翻頁|limit (默認從1開始,會自動處理) ORDER BY|orderBy, desc,asc GROUP BY|groupBy HAVING|having 需要注意的是limit方法默認從1開始,beetlsql已經自動處理了分頁情況,比如在mysql中,limit(1,10)默認是從第一條記錄開始查詢, 標準的mysql語句是limit(0,10); ---
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