What are some examples of primary keys in SQL?
An example of an AI chatbot conversation about SQL primary key usage and examples.
What are some examples of primary keys in SQL?
Primary keys are unique identifiers for records in a table. For example, in a 'Users' table, 'UserID' can be a primary key.
Can you give me more examples of primary keys in different tables?
Sure! In a 'Products' table, 'ProductID' can be a primary key. In an 'Orders' table, 'OrderID' is often used.
What makes a good primary key?
A good primary key should be unique, not null, and stable over time. It should also be simple and not change frequently.
Are there any best practices for choosing primary keys?
Yes, use a single column if possible, avoid using sensitive information, and consider using surrogate keys for simplicity.
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