How do I set default values for columns in SQL?
An example of an AI chatbot conversation about setting default values in SQL.
How do I set default values for columns in SQL?
You can set default values for columns in SQL using the DEFAULT keyword in your CREATE TABLE or ALTER TABLE statements.
Can you give me an example of how to do that?
Sure! For example, in a CREATE TABLE statement, you can write: CREATE TABLE users (id INT, name VARCHAR(100) DEFAULT 'Unknown'); This sets 'Unknown' as the default value for the name column.
What if I want to change the default value later?
You can change the default value using the ALTER TABLE statement. For example: ALTER TABLE users ALTER COLUMN name SET DEFAULT 'Guest'; This changes the default value to 'Guest'.
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