Question : I want to design a database with a many-to-many relationship with entities students and teams. Each team can […]
Tag: many-to-many
Better way to select a matching subset of rows?
Question : DB Fiddle link. I have a many to many table like this: CREATE TABLE house_to_cats ( id SERIAL […]
Getting duplicate results in many to many query
Question : I have designed a bookstore app with these tables. There’s a book with an M2M relation to author. […]
What is the proper way to relate many to many?
Question : I am building out a shipping app and database. Each shipment has three parties to it, shipper, receiver, […]
What is the proper way to relate many to many?
Question : I am building out a shipping app and database. Each shipment has three parties to it, shipper, receiver, […]
Mutually exclusive many-to-many relationships
Question : I have a table containers that can have a many-to-many relationships to several tables, let’s say those are […]
Count for many-to-many relationship
Question : I have the following tables: surveys properties owners_properties owners —+———— ———- ————+——— —— id | property_id id property_id […]
MySQL – Many to Many Join. Left Join already Present
Question : I am building a Attendance System for a Client and have become a tad stuck with JOIN’s. I […]
How to perform schema migration from array to many-to-many to lookup table?
Question : I currently am storing values in a column of type array like follows (this is just an example): […]
Unique sets of IDs from table
Question : I want to represent mixture of arbitrary numbers of chemicals. Since the relationship between chemicals and mixtures here […]