What are SQL functions and how do they work?
An example of an AI chatbot conversation about SQL functions and their usage in databases.
What are SQL functions and how do they work?
SQL functions are predefined operations that can be used to perform calculations, manipulate data, and return values. They can be categorized into aggregate functions, scalar functions, and window functions.
Can you give me examples of some common SQL functions?
Sure! Common SQL functions include COUNT(), SUM(), AVG(), MIN(), MAX() for aggregate operations, and UPPER(), LOWER(), and LENGTH() for string manipulation.
How do I use these functions in a query?
You can use SQL functions in your queries by including them in the SELECT statement. For example: SELECT COUNT(*) FROM employees; will return the total number of employees.
Are there any specific functions for date manipulation?
Yes, SQL provides functions like DATEADD(), DATEDIFF(), and GETDATE() to manipulate and work with date values.
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