Bugl — code interview practice that feels like a game

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Flash cards

Review the key moves

1/4

Core idea

What is the main idea behind SQL Server CAST() Function?

Lesson checks

Short Mimo-style checks built from this lesson's code, terms, and sequence.

1Quick choice

Which statement best captures the main point of this lesson?

2Fill blank

Complete the missing token from the example code.

___ CAST(25.65 AS int);

3Order

Put the learning moves in the order that makes the concept easiest to apply.

The CAST() function converts a value (of any type) into a specified datatype.

Definition and Usage

SQL Server CAST() Function

Example

SELECT CAST(25.65 AS int);

The CAST() function converts a value (of any type) into a specified datatype.

Tip

Also look at the CONVERT() function.

Syntax

CAST(
expression
 AS
datatype(length)
)

Value	Description
expression	Required. The value to convert
datatype	Required. The datatype to convert expression to. Can be one of the following: 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)

Works in:	SQL Server (starting with 2008), Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse