Litedb viewer query syntax

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We can offer you significant discounts based on the number of licenses purchased. Read more information below.Posted by: admin October 27, Leave a comment. I want to be able to search for a certain customer in my DataBase and since there will be multiple customers with a similar name I want return all of them and sort them in Descending Id or Date Order.

Have you looked at the example at the Queries wiki page? It is the fact that it expects that Customer objects can never be deleted from the DB and this is often just not true. February 21, c Leave a comment. Questions: Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this p Questions: I really enjoy using the aggregate functions that C provides such as.

Anybut I struggle to understand what my options are just looking from the method signature: Can someone help me be Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Add menu. Clear ; foreach var cust in collection. Any function in C February 21, c Leave a comment Questions: I really enjoy using the aggregate functions that C provides such as.

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If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. Therefore, this project will not continue into version 5 of LiteDB and if you need a viewer for your database please consider using LiteDB Studio.

Read more here: LiteDB v5. To download the latest version of this program, take a look at the releases page. Donations assist development and are greatly appreciated; also always remember that every coffee counts! Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. C Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again.

Latest commit. Latest commit 1dedb69 Sep 12, You can also use the context menu registered for '. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. New version replacing v4 beta and v3.

Dec 20, Show numeric values without the encoding or storing method forced by …. Sep 6, New Release, LiteDBv2. Feb 24, LiteDB added to the.Query is a static class that creates a query criteria.

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Each method represents a different criteria operation that can be used to query documents. Find supports Skip and Limit parameters. Find method returns an IEnumerable of documents. If you want do more complex filters, value as expressions, sorting or transforms results you can use LINQ to Objects.

Returning an IEnumerable your code still connected to datafile. Only when you finish consume all data, datafile will be disconected. These two methods are useful because you can count documents or check if a document exists without deserializing the document. LiteDB uses a skip list implementation for indexes See Indexes. Collections offer Min and Max index values.

litedb viewer query syntax

The implementation is:. Some LiteDB methods support predicates to allow you to easily query strongly typed documents.

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If you are working with BsonDocumentyou need to use classic Query class methods. Skip to content. Queries Jump to bottom. This documentation is valid only for v4. Query filter document inside a collection in three ways: Indexed based search best option. All - Returns all documents.

Can be specified an index field to read in ascending or descending index order. In - Find documents that are equals of listed values. Not - Find documents that are NOT equals! StartsWith - Find documents that strings starts with value. Valid only for string data type. Contains - Find documents that strings contains value. This query do index search, only index scan slow for many documents. It's a full index scan based query.They vary from L1 to L5 with "L5" being the highest.

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litedb viewer query syntax

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litedb viewer query syntax

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litedb viewer query syntax

Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. The following statement, using repository pattern, and using Linq to filter records, works as expected. I get the correct number of records from database. Learn more. Asked 1 year, 10 months ago.

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Active 1 year, 10 months ago. Viewed 1k times. I have setup LiteDb with following models. Equals "customer". ToList ; I am trying to query the same records using repository pattern as follows. What is wrong with my above statement? Nkosi k 25 25 gold badges silver badges bronze badges.

What is your question? Did you expect any records to be returned? Please edit your answer to provide more detail. DanDaviesBrackett I have updated the question. Thanks for guidance. Active Oldest Votes. If you want access subclass in array, you can use index property:. Sign up or log in Sign up using Google. Sign up using Facebook.

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The Overflow Blog.This article presents an overview on how we can work with this database using C. LiteDB works with documents and collections. Documents are used to store and retrieve data to and from a data file. LiteDB organizes the documents inside document stores known as collections. Incidentally, each collection is identified by a unique name and contains one or more documents that share the same schema.

To work with documents, you can take advantage of the methods of the collection. Here is the list of the methods you can use:. You simply add a reference to the LiteDB. Create a new console application project in Visual Studio and save it with a name.

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Note that we should have an Id named property in our class to work with LiteDB. Alternatively, we can also decorate any property in our class with the [BsonId] attribute. The Id property should be unique and not null. If you leave the Id property empty, LiteDB will automatically generate the Id when inserting a record.

The following code snippet can be used to create a new Author instance and insert a record. Refer to the code snippet above. Note how a new instance of LiteDatabase is created by passing the connection string as a parameter. The following statement retrieves a collection or creates a new collection if none exists. The call to the Insert method on the collection instance automatically generates the value of the Id property and inserts the document into the database.

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Now that you have inserted a new record in the database, you can query it as shown in the code snippet below. Note that the FindById method returns the document by its Id or the primary key index. You can explicitly create an index using the EnsureIndex method as shown below. Updating a document is simple. You simply change the property values and then call the Update method on the collection instance as shown below. If you would like to find all authors who live in a particular location, you can use the following query.

Here is an example that illustrates how you can use this class. LiteDB provides the FileStorage collection for working with files. Uploading or downloading files is simple.

All you need to do is call the appropriate method on the FileStorage collection as shown in the code snippets below. To upload a file:.

It should be noted that LiteDB creates two collections to work with files. Net, as well as a speaker and author of several books and articles.

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