freeCodeCamp/guide/english/sql/sql-server-convert-function/index.md

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SQL Server Convert Function

SQL Server Convert Function

Converts from one data type to another data type.

Syntax

CONVERT (_New Data Type, Expression, Style_)

• New Data Type: New data type to be converted too. For example: nvarchar, integer, decimal, date
• Expression: Data to be converted.
• Style: Format. For example: The style 110 is USA Date format mm-dd-yyyy

Example: Convert a Decimal Number to An Integer

SELECT CONVERT(INT, 23.456) as IntegerNumber

Note: The result is truncated.

Example: Convert a String to a Date

SELECT CONVERT(DATE, '20161030') as Date

Example: Convert a Decimal to a String

SELECT CONVERT(nvarchar, 20.123) as StringData

Example: Convert an Integer Number to a Decimal Number

SELECT CONVERT(DECIMAL (15,3), 13) as DecimalNumber

Example: Convert a String to Date Format in USA Date Style

SELECT CONVERT(DATE, '20171030' , 110) To_USA_DateFormat

More Information:

• Information on Convert function: Microsoft