This repository contains SQL practice exercises focused on handling 'NULL' values using functions like 'IFNULL ()','ISNULL ()' etc. The exercises are based on a case study provided by BRightLght ...

NULL is a fickle beast, and for the people not accustomed to how it works in SQL, it can create many problems (read: incorrect data output). This is especially true for those coming from ...

NewDateValue NULL Logical Functions The next grouping of new T-SQL commands is logical functions; they include two new commands, CHOOSE and IIF. These commands are used for logical operations to help ...

Spread the loveNULL in SQL is a powerful concept, representing the absence of a value. It’s used when data is unavailable or unknown, but its usage requires careful consideration. The first step is ...

SQL is a tool that is widely used in the manipulation of data and featuring in the relational database. They are applied in querying, manipulating as well as reporting data and it is commonly used by ...