collationオプションを指定すると、db.collection.createIndex()で大文字と小文字を区別しないインデックスを作成できます。 db.collection.createIndex( { <field>: <sortOrder> }, { collation: { locale : <locale>, strength : <1|2> } } ) 大
Case-Insensitive Queries Case-insensitive indexes typically do not improve performance for$regexqueries....
> db.getCollection('users').find({}).sort({name:1}) The data returned will be ordered considering the case. This means, for example, that the uppercase character “B” will be considered before the lowercase character “a”: [ { _id: ..., name: 'Aen', surname: 'Not' }, { _...
importcom.mongodb.client.MongoCollection;importcom.mongodb.client.MongoDatabase;importorg.bson.Document;publicclassExactSearchExample{publicstaticvoidmain(String[]args){MongoDatabasedatabase=// 获取数据库连接MongoCollection<Document>collection=database.getCollection("users");Documentquery=newDocument("age",...
Yes. The following Atlas Search operators support partial string matching queries: autocomplete wildcard regex Tip See also: How to Run Partial Match Atlas Search Queries Can I perform case-insensitive search with thewildcardorregexoperator?
官网地址:https://docs.mongodb.com/manual/reference/operator/query/regex/#regex-case-insensitive 举个例子来说:现在有以下集合(官网的例子): { "_id" : 100, "sku" : "abc123", "description" : "Single line description." } { "_id" : 101, "sku" : "abc789", "description" : "First li...
("%s%s%s", "^.*", name, ".*$"); //我们可以先不传递正则字符串,可以先进行设置模糊的参数,使得匹配时会操作该参数 //构建正则条件对象,Pattern.CASE_INSENSITIVE忽略正则中的大小写 Pattern compile = Pattern.compile(format, Pattern.CASE_INSENSITIVE); query.addCriteria(Criteria.where("name").regex...
Pattern pattern = Pattern.compile("^.*王.*$", Pattern.CASE_INSENSITIVE); cond=newBasicDBObject(); cond.put("name",cond); 放入条件列表 condList.add(cond); 4、$gte/$lte/$gt/$lt 接1实例中,要筛选出年龄大于20且小于等于40的用户,我们可以这样: ...
Search Result: The above query returns all theAuthorswhich starts with “J” values. For Case insensitive query please prepare a query as explained in the above first example. Scenarios3 – MongoDB C# Regex queryend with‘like’ Let’s build a query to Get the list of items that ends wit...
//Pattern pattern = Pattern.compile("^.*" + param.get("keyword") +".*$", Pattern.CASE_INSENSITIVE); BasicDBObject query= new BasicDBObject(); //模糊查询的字段设置 query.put("page_html", Pattern.compile((String) param.get("keyword"))); ...