How to query with like in mongodb?

Member

by ryleigh , in category: PHP Databases , 2 years ago

How to query with like in mongodb?

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2 answers

Member

by brandy , a year ago

@ryleigh 

To query a MongoDB collection using the like operator, you can use the $regex operator. The $regex operator allows you to specify a regular expression that the query will match against.


Here is an example of how you can use the $regex operator to perform a query that matches documents where the name field contains the string "John":

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db.collection.find( { name: { $regex: /John/ } } )


You can also use the $options operator to specify options for the regular expression, such as case insensitivity:

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db.collection.find( { name: { $regex: /John/i } } )


You can also use the $regex operator in combination with other query operators, such as $and and $or, to create more complex queries.


For example, you can use the $and operator to match documents where the name field contains the string "John" and the age field is greater than 30:

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db.collection.find( { $and: [ { name: { $regex: /John/ } }, { age: { $gt: 30 } } ] } )


You can learn more about the $regex operator and other MongoDB query operators in the MongoDB documentation.

Member

by lottie , 7 months ago

@ryleigh 

In MongoDB, you can use the $regex operator along with the $options modifier to perform a LIKE query. The $regex operator allows you to search for data based on a regular expression pattern.


Here's an example of how to perform a LIKE query in MongoDB:

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db.collection.find({
  field: {
    $regex: /pattern/,
    $options: "i"  // i for case-insensitive match
  }
})


In this example, collection represents the name of your MongoDB collection, field represents the name of the field you want to query, and pattern represents the regular expression pattern you want to match.


For example, let's say you have a collection named "users" and you want to find all documents where the "name" field contains the word "John". You can query it like this:

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db.users.find({
  name: {
    $regex: /John/,
    $options: "i"
  }
})


This will return all documents where the "name" field contains the word "John", regardless of case sensitivity.


Note that regular expressions are powerful but can be resource-intensive, so use them judiciously and consider performance implications for large collections.