Operation in relational algebra or in an RDBMS (mostly SQL) to partition relations.
Assume I have two tables: cars – list of cars carname | modelnumber | ... passedtest – contains every test that a car passed: id | …
sql sql-server tsql relational-divisionI have two tables in my database: Products id (int, primary key) name (varchar) ProductTags product_id (int) tag_id (…
mysql join where-in relational-divisionGiven the following tables: Recipes | id | name | 1 | 'chocolate cream pie' | 2 | 'banana cream pie' | 3 | 'chocolate banana surprise' Ingredients | id | name | 1 | 'banana' | 2 | …
sql join where relational-divisionWhat is the easiest and fastest way to achieve a clause where all elements in an array must be matched …
sql ruby-on-rails postgresql activerecord relational-divisionAssuming I have the tables student, club, and student_club: student { id name } club { id name } student_club { student_id …
mysql sql postgresql sql-match-all relational-divisionLet's suppose I have a table T1 with people IDs and other stuff IDs, as the following Table: T1 personID | …
mysql sql relational-divisionThis is a very basic query I can't figure out.... Let's say I have a two column table like this: …
mysql sql relational-division sql-match-allI'm following the Stanford Database course and there's a question where we have Find all pizzerias that serve every pizza …
relational-algebra relational-divisionI have a PostgreSQL database that stores users in a users table and conversations they take part in a conversation …
sql postgresql relational-divisionI have a database with two main tables notes and labels. They have a many-to-many relationship (similar to how stackoverflow.…
sql search many-to-many relational-division