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MongoDB query for specific case insensitive search
Let us first create a collection with documents −
> db.demo186.insertOne({"UserEmailId":"JOHN@GMAIL.COM","UserName":"John"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e399d769e4f06af55199808")
}
> db.demo186.insertOne({"UserEmailId":"chris@gmail.com","UserName":"chris"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e399d879e4f06af55199809")
}
> db.demo186.insertOne({"UserEmailId":"DAVID@GMAIL.COM","UserName":"David"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e399d979e4f06af5519980a")
}Display all documents from a collection with the help of find() method −
> db.demo186.find();
This will produce the following output −
{ "_id" : ObjectId("5e399d769e4f06af55199808"), "UserEmailId" : "JOHN@GMAIL.COM", "UserName" : "John" }
{ "_id" : ObjectId("5e399d879e4f06af55199809"), "UserEmailId" : "chris@gmail.com", "UserName" : "chris" }
{ "_id" : ObjectId("5e399d979e4f06af5519980a"), "UserEmailId" : "DAVID@GMAIL.COM", "UserName" : "David" }Following is the query for case insensitive search −
> var userMailId = [ /john@gmail.com/i, /david@gmail.com/i ]
> db.demo186.find({
... '$or': [
... { 'UserEmailId': { '$in': userMailId} },
... { 'UserName': 'John' }
... ]
...})This will produce the following output −
{ "_id" : ObjectId("5e399d769e4f06af55199808"), "UserEmailId" : "JOHN@GMAIL.COM", "UserName" : "John" }
{ "_id" : ObjectId("5e399d979e4f06af5519980a"), "UserEmailId" : "DAVID@GMAIL.COM", "UserName" : "David" }
Updated on: 27-Mar-2020
194 Views
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