How can I query data in Flask using SQLAlchemy?

How can I query data in Flask using SQLAlchemy?

You can use SQLAlchemy's ORM to query data in Flask. First, ensure you have a model defined for your database table.

Can you show me an example of a simple query?

Sure! Here's a basic example: User.query.all() retrieves all users from the User table.

What if I want to filter the results?

You can use the filter method. For example: User.query.filter_by(name='John').all() will get all users named John.

How do I handle errors when querying?

You can use try-except blocks to catch exceptions. For example, wrap your query in a try block and handle any errors in the except block.