Discovering referers to SQLAlchemy object
I have a lot of model classes with ralations between them with a CRUD interface to edit. The problem is that some objects can't be deleted since there are other objects refering to them. Sometimes I...
View ArticleAnswer by S.Lott for Discovering referers to SQLAlchemy object
In general, there's no way to "discover"all of the references in a relational database.In some databases, they may use declarative referential integrity in the form of explicit Foreign Key or Check...
View ArticleAnswer by Kylotan for Discovering referers to SQLAlchemy object
For each model class, you can easily see if all its one-to-many relations are empty simply by asking for the list in each case and seeing how many entries it contains. (There is probably a more...
View ArticleAnswer by van for Discovering referers to SQLAlchemy object
SQL: I have to absolutely disagree with S.Lott'answer.I am not aware of out-of-the-box solution, but it is definitely possible to discover all the tables that have ForeignKey constraints to a given...
View Article
