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SQL Reference

Quick Reference

The SQL Server CONVERT() function converts a value of any type into a specified datatype.

				
					SELECT CONVERT(int, 9.98);

Output

				
					9

Syntax

				
					CONVERT(data_type(length), expression, style)

Parameters

ParameterDescription
data_typeThe datatype to convert expression to (required)

  • bigint

  • int

  • smallint

  • tinyint

  • bit

  • decimal

  • numeric

  • money

  • smallmoney

  • float

  • real

  • datetime

  • smalldatetime

  • char

  • varchar

  • text

  • nchar

  • nvarchar

  • ntext

  • binary

  • varbinary

  • image
(length)The length of the resulting data type (for char, varchar, nchar, nvarchar, binary and varbinary)
expressionThe value to convert (required)
styleThe format used to convert between data types, such as a date or string format

Converting datetime to character:

  • Without century With century Input/Output Standard

  • 0 100 mon dd yyyy hh:miAM/PM Default

  • 1 101 mm/dd/yyyy US

  • 2 102 yyyy.mm.dd ANSI

  • 3 103 dd/mm/yyyy British/French

  • 4 104 dd.mm.yyyy German

  • 5 105 dd-mm-yyyy Italian

  • 6 106 dd mon yyyy -

  • 7 107 Mon dd, yyyy -

  • 8 108 hh:mm:ss -

  • 9 109 mon dd yyyy hh:mi:ss:mmmAM (or PM) Default + millisec

  • 10 110 mm-dd-yyyy USA

  • 11 111 yyyy/mm/dd Japan

  • 12 112 yyyymmdd ISO

  • 13 113 dd mon yyyy hh:mi:ss:mmm Europe (24 hour clock)>

  • 14 114 hh:mi:ss:mmm 24 hour clock

  • 20 120 yyyy-mm-dd hh:mi:ss ODBC canonical (24 hour clock)

  • 21 121 yyyy-mm-dd hh:mi:ss.mmm ODBC canonical (24 hour clock)

  • 126 yyyy-mm-ddThh:mi:ss.mmm ISO8601

  • 127 yyyy-mm-ddThh:mi:ss.mmmZ ISO8601 (with time zone Z)

  • 130 dd mon yyyy hh:mi:ss:mmmAM Hijiri

  • 131 dd/mm/yy hh:mi:ss:mmmAM Hijiri


Converting float to real:

  • Value Explanation

  • 0 Maximum 6 digits (default)

  • 1 8 digits

  • 2 16 digits


Converting money to character:


  • Value Explanation

  • 0 No comma delimiters, 2 digits to the right of decimal

  • 1 Comma delimiters, 2 digits to the right of decimal

  • 2 No comma delimiters, 4 digits to the right of decimal

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