Answer 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 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 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 ArticleDiscovering 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...
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