Convert String To Uniqueidentifier Sql

Convert String To Uniqueidentifier Sql FAQ

What is unique identifier in sql?

A unique identifier in a SQL Server database is the same thing as a unique identifier in any database. It is a field or combination of fields that uniquely identifies a record. Only one record in a database can have the value that the unique identifier has. Another term for unique identifier is candidate key.

What is cast function in sql?

The CAST function in SQL converts data from one data type to another. For example, we can use the CAST function to convert numeric data into character string data. The syntax of the CAST function is as follows: CAST (expression AS [data type]) where [data type] is a valid data type in the RDBMS you are working with.

What is a guid in sql server?

The globally unique identifier (GUID) data type in SQL Server is represented by the uniqueidentifier data type, which stores a 16-byte binary value. A GUID is a binary number, and its main use is as an identifier that must be unique in a network that has many computers at many sites.

What is an integer in sql?

In Oracle, an INTEGER is an ANSI SQL data type which refers to numeric values which have only an integer portion and no floating point or decimal part. That is, an INTEGER will only store whole numbers, such as 5, 93, 1816. An INTEGER cannot store '12.85', or any number with a decimal component.