WebMar 10, 2015 · find /dir egrep '2015.*(album picture)' Advantages: type less, get results faster; more readable (no \, unnecessary .*) may run faster–piped commands allow the kernel to balance between two CPUs, yes I tested right now in my ordinary console) acts similarly in case you want to read from a list of files or other sources WebOct 18, 2024 · Read: MongoDB find multiple conditions. MongoDB find string contains a substring. In this topic, we will learn to find the documents of the collection where the field contains a substring of a …
db.collection.find() — MongoDB Manual
WebDeveloper Data Platform. Innovate fast at scale with a unified developer experience WebDefinition $cond Evaluates a boolean expression to return one of the two specified return expressions. The $cond expression has one of two syntaxes: { $cond: { if: < boolean - … astrakhan spring
$cond (aggregation) — MongoDB Manual
WebJul 30, 2024 · Implement multiple conditions in MongoDB - Let us first create a collection with documents −> db.multipleConditionDemo.insertOne({_id:1,Name:John}); { acknowledged ... In MongoDB, the or operator is used to select or retrieve only those documents that match at least one of the given expressions. 1. We can also use this operator in method like find(), update() etc as per the requirements. 2. We can also use this operator with text queries and sort operations. 3. We can also nest … See more The find query in MongoDB is used to choose documents from a collection, inspect them, and return a cursor to the selected documents. … See more In MongoDB, To access the documents of a collection we use the find()method. In this method, you can give any conditions if you want to and get … See more In MongoDB Compass, you can apply multiple conditions and easily find the documents. You will more understand with the help of an example so let’s get started: Example: In this … See more MongoDB provides a findOne() method that is used to return one document that satisfies the specified query criteria on the collection. If the … See more WebJul 30, 2024 · Following is the query to delete data from a collection in MongoDB by using multiple conditions. Here we have used two conditions i.e. _id 4 and Name David −. > db.deleteDataDemo.remove( {'_id':4,'Name':"David"}); WriteResult( { "nRemoved" : 1 }) Let us check all the documents once again −. > db.deleteDataDemo.find().pretty(); astrakhan wikipedia