What are SQL SELECT queries and how do I use them?
SQL SELECT queries are used to retrieve data from a database. You can specify which columns to select and from which table.
Can you show me a basic example of a SELECT query?
Sure! A basic example is: SELECT * FROM employees;
This retrieves all columns from the 'employees' table.
How do I select specific columns instead of all?
You can specify the columns you want by listing them: SELECT first_name, last_name FROM employees;
This retrieves only the first and last names.
What if I want to filter the results?
You can use the WHERE clause to filter results. For example: SELECT * FROM employees WHERE department = 'Sales';
This retrieves employees in the Sales department.
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