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Database

Home » Database » Page 2
Read more about the article Multiple aggregation pipeline in a single query in MongoDB | Multiple Counts with a single query in MongoDB
Database / MongoDB / TipsnTricks

Multiple aggregation pipeline in a single query in MongoDB | Multiple Counts with a single query in MongoDB

Many time we want run query with in query to get desirable result. MongoDB provide a aggregation operator to achieve result like this. Lets assume we have a collection with…

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30th August 2021
Read more about the article How to query MongoDB similar to SQL “Like” operator | SQL “Like” operator in MongoDB
Database / MongoDB / TipsnTricks

How to query MongoDB similar to SQL “Like” operator | SQL “Like” operator in MongoDB

If we want SQL like "Like" operator in Mongo DB for string matching. But in mongo DB there is no such "like" operator instead it has regular expression to achieve…

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23rd August 2021
Read more about the article How to extract year and month from date in PostgreSQL
Database / TipsnTricks

How to extract year and month from date in PostgreSQL

There are various way to get year and month from date in PostgreSQL. 1. Extract The extract function retrieves subfields such as year or hour from date/time values. source must be a value expression…

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2nd August 2021
Read more about the article group by in loopback | Distinct value in loopback
Database / Tech / TipsnTricks

group by in loopback | Distinct value in loopback

Loopback does not support group by or distinct query. But we can achieve in loopback another way. Let see a solution for this issue. 1. Distinct // Let User is…

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26th July 2021
Read more about the article Example of MongoDB update field operator $mul, $max, and $min in query
Database / MongoDB

Example of MongoDB update field operator $mul, $max, and $min in query

We will see the example of $mul, $min, and $max in the update query of MongoDB. How we can use these update query field operators in our update query to…

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5th June 2021
Read more about the article Importing data into MongoDB | How to Import data into MongoDB
Database / MongoDB / QnA

Importing data into MongoDB | How to Import data into MongoDB

We need import a large or any size of data set to practice or for the project requirement. We can insert a large data set using insertMany() but it is…

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29th May 2021
Read more about the article ‘mongoImport’ is not recognized as an internal or external command | mongoimport command not found
Database / MongoDB / QnA / TipsnTricks

‘mongoImport’ is not recognized as an internal or external command | mongoimport command not found

The mongoimport tool imports content from an Extended JSON, CSV, or TSV export created by mongoexport, or potentially, another third-party export tool. Starting with MongoDB 4.4, mongoimport is now released separately from the MongoDB Server and…

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22nd May 2021
Read more about the article All about mongoDB insertMany() | insertMany in mongdb
Database / MongoDB / TipsnTricks

All about mongoDB insertMany() | insertMany in mongdb

The insertMany() is used to insert one or more document in the collection. It take an array of documents to insert into the collection. By default it insert document in…

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15th May 2021
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