How to convert calculated SQL column to 2 decimal place?

Question

SELECT order_id, ROUND(10,2 (quantity * list_price) * (1-discount)) AS total_price 
FROM order_items;

I am trying to round the total_price column to 2 decimal places but it is throwing me an error.

Answer 1

The number of decimal places of precision is the second parameter to ROUND :

SELECT
    order_id,
    ROUND((quantity * list_price) * (1-discount), 2) AS total_price 
FROM order_items;

Answer 2

syntax is ROUND (number, decimal , operation) Try

SELECT order_id, ROUND((quantity * list_price) * (1-discount),2,1) AS total_price 
FROM order_items;

operation = 1 for round and operation = 0 for truncate.