What are some examples of SQL queries?
An example of an AI chatbot conversation about SQL query examples and their usage.
Can you provide some examples of SQL queries?
Sure! Here are a few examples: 1. SELECT * FROM users; 2. INSERT INTO orders (user_id, product_id) VALUES (1, 2); 3. UPDATE products SET price = 19.99 WHERE id = 3; 4. DELETE FROM sessions WHERE last_active < '2023-01-01';
What does the SELECT statement do?
The SELECT statement is used to query data from a database. It allows you to specify which columns to retrieve and from which table.
Can you explain the difference between INNER JOIN and LEFT JOIN?
Yes! INNER JOIN returns only the rows that have matching values in both tables, while LEFT JOIN returns all rows from the left table and the matched rows from the right table, filling in NULLs for non-matching rows.
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