3 Use COALESCE or ISNULL functions Sometimes, you may want to replace NULL values with some default or alternative values in your SQL queries.

Learn how m=to manage 'NULL' values in SQL queries Use SQL null-handling functions to replace or identify 'NULL's Practice writing clean, readable SQL queries ...

Sometimes, you may want to replace NULL values with some default or alternative values in your SQL queries. For example, you may want to calculate the average rating of a product, but some ratings ...