If a text index has multiple fields in Mongo, how can I do a search in only one field since the weight is applied to the index and not to the query Answer I assume you are using MongoDB version . to . ...
2017-06-21 13:41 0 1702 推薦指數:
QueryWrapper<User> queryWrapper = new QueryWrapper<>(); if (!StringUtils.isEmpty(ke ...
select id from table where (num,name) in ((num1,'name1'),(num2,'name2')) ...
$query = '{ "$and": [ {"$or": [{"reported": {"$exists": false}}, {"reported": 0}] ...
前言 當我們輸入關鍵字時希望可以支持篩選多個字段,這樣搜索內容的覆蓋率就會大一些。 匹配多個字段主要用 MultiFieldQueryParser類。 單一字段搜索 多個字段搜索 參考 http://www.cnblogs.com ...
MySql多個字段關鍵字分詞模糊查詢,按照最佳匹配度排序,使用LOCATE函數SELECT DISTINCT t.*FROM pub_course tLEFT JOIN course_tag t1 ON ( t1.entitytype = t.type AND t1.entityid = t.id ...
多個字段進行分組查詢: db.biao.aggregate([{ "$match":{"create_time": { $gte:1547049600000, $lte:1547135999000} }},{"$group":{"_id":{"clue_param_vals ...
同我上一篇,就是添加`符號, eg:那么要在desc的左右兩面加上一個反引號 ` (就是鍵盤上ESC下面的那個) select id,name,`desc` from test ...