How do I use the COUNT function in SQL?
An example of an AI chatbot conversation about using the COUNT function in SQL.
How do I use the COUNT function in SQL?
The COUNT function in SQL is used to count the number of rows that match a specified condition. You can use it like this: SELECT COUNT(*) FROM table_name;.
Can you give me an example with a specific table?
Sure! If you have a table called 'employees', you can count the number of employees like this: SELECT COUNT(*) FROM employees;.
What if I want to count only the employees in a specific department?
You can add a WHERE clause to filter by department. For example: SELECT COUNT(*) FROM employees WHERE department = 'Sales';.
Is there a way to count distinct values?
Yes! You can use COUNT(DISTINCT column_name) to count unique values. For example: SELECT COUNT(DISTINCT department) FROM employees;.
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