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 ...

Contribute to OpenDocCN/geeksforgeeks-sql-zh development by creating an account on GitHub.

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 ...