Back
Database query
i am using flutter sdk (appwrite: ^8.2.2) and cloud appwrite. When i am try to query getting an error -: Index not found: user_id
user_id is the attribute in my db.
My code is below
await databases.listDocuments( databaseId: AppWriteConstants.databaseId, collectionId: AppWriteConstants.colProjectUserRole, queries: [ Query.equal('user_id', prefs.getString(PreferenceType.userId) ?? ''), ], )
TL;DR
The user is facing an issue with a database query using Flutter SDK and Appwrite. They are getting an error "Index not found: user_id" when trying to query. The solution to this issue is to create an index for the 'user_id' attribute. The user can refer to the Appwrite documentation on indexes for more information. 
You must create an index of your attribute in order to use it in a query.
Ref: https://appwrite.io/docs/databases#indexes Also see this post by VicentGe https://dev.to/appwrite/how-do-i-index-my-appwrite-collection-2o4n
Thank you @Ponguta_ . It solve the issue.
