MongoDB doesn’t Contain a String query
Today in this article, we will see how to search records in MongoDB does not contain a string.
We will learn to search a string and match documents based on case-sensitive and insensitive searches in this informative article.
Multiple approaches are covered, including using a like query or regex query.
We will see multiple approaches to achieve the same like using a like query or regex query etc.
Today in this article, we will cover below aspects,
Let’s take the example below to learn the query.
I have a sample MongoDB document below in one of the collections.
[
{
"_id": "5db5a4476997188b2722c820",
"Name": "Design Patterns",
"Price": 54.93,
"Category": "Computers",
"Author": "Ralph Johnson"
},
{
"_id": "5ff50353a29ce9564c2724e2",
"Name": "Design Patterns",
"Price": 54.93,
"Category": "Computers",
"Author": "Mike Casper"
},
{
"_id": "5ff503cda29ce9564c2724e3",
"Name": "Design Patterns",
"Price": 54.93,
"Category": "Computers",
"Author": "Julia Robert"
},
{
"_id": "5f34a2430c3ca98a8c9052d2",
"Name": "Design Patterns",
"Price": 54.93,
"Category": "Computers",
"Author": "Mike Johnson"
}
]
MongoDB does not Contain a String
Let’s build a MongoDB query using a regex for getting documents that don’t contain a String.
Author names where the name contains a word like “John” or “john” for the Author field value.
Here we are trying to match “John” or “john” could be contained at the start or last or in the middle or anywhere else of Author names.
MongoDB does not Contain a String – Case sensitive
Command
{ Field Name : {'$regex' : '^((?!Field Value).)*$'}}
Example
db.Books.find( { {Author:{'$regex' : '^((?!John).)*$'}} )
Mongo Query Result :
MongoDB does not Contain a String – Case insensitive
Command
{Field Name :{'$regex' : '^((?!Field Value).)*$', '$options' : 'i'}}
Example
{Author: {$regex: '^((?!John).)*$',$options: 'i'}}
References :
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