user_preferences | UserPreference gem | Compression library

Can anyone please give a TypeORM solution for the below query,

I have a DB with tables that maintain information about users and other users that are allowed to approve tasks for those users. This approver could be the user's supervisor (maintained in a 1-many relationship of the users table), or another user explicitly given approval powers (maintained in a separate many-to-many relationship table).

My goal is to find the complete tree (or chain) of "approvees" for a given user (i.e., who that user is allowed to approve for, together with anyone in the approval chain of those approvees). Since this is not as simple as looking up WHERE u1.username = u2.supervisor due to the many-to-many relationship of the "explicit other approvers" described above, this is not as simple as the example given here: https://www.postgresqltutorial.com/postgresql-recursive-query/

For the non-recursive case, I've written up a function that allows me to get all users allowed to be approved by a certain user, that looks like this (it also does some other stuff like formatting the result based on information held in another table, but the core bit of it is the stuff on either side of the union in the subquery):

I'm having an issue with my app when I inflate an recyclerview. Inside the recyclerview, some cards are inflated and when it comes out to the screen, the toolbar disappears and the settings button can't be used. If someome could help me or give me some hints of what may be happening... I'd be relly grateful.

Using the latest SDK and libraries versions.

Code is below.

activity_main.xml:

• Xcode Version 11.3.1 (11C504)
• Mojave Version 10.14.4 (18E226)

Steps which I am making: 1. Launch iOS simulator using Xcode. 2. Open terminal and run `ideviceinfo -u :

I forked a Ruby on Rails project from https://github.com/openstreetmap/openstreetmap-website but I'm new in Ruby.

I need to make a list with a column of usernames and another column with the sum of changes made by that user.

As you can see, there is a table named "changesets" in the database:

irb(main):002:0> ActiveRecord::Base.connection.tables

=> ["schema_migrations", "ar_internal_metadata", "current_way_tags", "current_ways", "diary_entries", "friends", "gps_points", "gpx_file_tags", "messages", "gpx_files", "users", "way_tags", "ways", "user_preferences", "user_tokens", "way_nodes", "diary_comments", "current_relations", "current_node_tags", "node_tags", "current_relation_tags", "nodes", "acls", "relation_tags", "current_way_nodes", "current_nodes", "current_relation_members", "changesets", "relation_members", "changeset_tags", "languages", "relations", "oauth_nonces", "oauth_tokens", "user_roles", "notes", "user_blocks", "client_applications", "note_comments", "redactions", "changesets_subscribers", "changeset_comments", "reports", "issues", "issue_comments", "diary_entry_subscriptions", "delayed_jobs"]

And the changesets table have the following columns:

irb(main):007:0> Changeset.column_names

=> ["id", "user_id", "created_at", "min_lat", "max_lat", "min_lon", "max_lon", "closed_at", "num_changes"]

And the users table have the following columns:

irb(main):008:0> User.column_names

=> ["email", "id", "pass_crypt", "creation_time", "display_name", "data_public", "description", "home_lat", "home_lon", "home_zoom", "nearby", "pass_salt", "image_file_name", "email_valid", "new_email", "creation_ip", "languages", "status", "terms_agreed", "consider_pd", "auth_uid", "preferred_editor", "terms_seen", "description_format", "image_fingerprint", "changesets_count", "traces_count", "diary_entries_count", "image_use_gravatar", "image_content_type", "auth_provider", "home_tile", "tou_agreed", "ranked"]

An user can have several changesets, but each changeset belongs to only one user. So the second column of my list should be the sum of the num_changes of all the changesets of that user.

How could I display that information? I think it would be something like this:

I am facing a null object error which I cannot solve. My App compiles just fine but however when I use the function of "rating food" the App crashes and is showing the Error I have linked. I cannot really figure out why it should be a null object since the "Vorname" gets saved when the user registers. Is maybe the way I want to identify the "Vorname" wrong? If you have any Ideas what I should change please let me know. Thanks and have a good day!

If you need any more information please let me know.

I am trying to write a query. I got it work half way, but I am having problems with the LEFT JOIN.

I have three tables:

• user
• user_preferences
• user_subscription_plan

User will always have one user_preference, but it can have many or no entries in the user_subscription_plan

If the user has no entry in the user_subscription_plan, or if he has only one then my sql works. If I have more then one, then I have issue. In the case of two entries, how can I make it to return the last one entered? I tried playing with ORDER statement, but it does not work as expected. Somehow I get empty rows.

Here is my query:

I am having trouble to seed user_preference column from users table which is of JSON type. I get error 'Array to string conversion' in my git bash when I type php artisan db:seed.

UserSeeder.php

I am having multiple checkboxes in my form, and when I select some of them and submit form I get error 'Array to string conversion'. My database column user_preferences is type string so that is the reason of error. I just don't know how to insert multiple values in that column. Any help is appreciated. Here is my code.

UserController.php