What is a cast function in database?
- By Arsal Ahmed March-20-2018
- 626
In the SQL Server, the cast function converts an expression from one datatype to another datatype.
Expression:
- The value to convert to another datatype.
Type:
- The datatype that you wish to convert expression to and it can be one of the following are:
bigint, int, smallint, tinyint, bit, decimal, numeric, money, smallmoney, float, real, datetime, smalldatetime, char, varchar, text, nchar, nvarchar, ntext, binary, varbinary, or image.
Length:
- Optional. The length of the resulting data type for char, varchar, nchar, nvarchar, binary and varbinary.
Example:
- Let's look at some SQL Server CAST function examples and explore how to use the CAST function in SQL Server (Transact-SQL).
For example:
SELECT CAST (14.85 AS int);
Result: 14 (result is truncated)
