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SQL Server CONVERT () function

SQL Dates SQL Server Date Functions

Definition and Usage

CONVERT () function is a generic function to convert the date to the new data type.

CONVERT () function can display the date / time data in different formats.

grammar

CONVERT(data_type(length),expression,style)

值 描述
data_type(length) 规定目标数据类型（带有可选的长度）。
expression 规定需要转换的值。
style 规定日期/时间的输出格式。

The following table shows the style values ​​of datetime or smalldatetime to character data of:

值
(世纪 yy)		 值
(世纪 yyyy)		 输入/输出 标准
- 0 or 100 mon dd yyyy hh:miAM (or PM) Default
1 101 mm/dd/yy USA
2 102 yy.mm.dd ANSI
3 103 dd/mm/yy British/French
4 104 dd.mm.yy German
5 105 dd-mm-yy Italian
6 106 dd mon yy
7 107 Mon dd, yy
8 108 hh:mm:ss
- 9 or 109 mon dd yyyy hh:mi:ss:mmmAM (or PM) Default+millisec
10 110 mm-dd-yy USA
11 111 yy/mm/dd Japan
12 112 yymmdd ISO
- 13 or 113 dd mon yyyy hh:mi:ss:mmm (24h)
14 114 hh:mi:ss:mmm (24h)
- 20 or 120 yyyy-mm-dd hh:mi:ss (24h)
- 21 or 121 yyyy-mm-dd hh:mi:ss.mmm (24h)
- 126 yyyy-mm-ddThh:mi:ss.mmm (no spaces) ISO8601
- 130 dd mon yyyy hh:mi:ss:mmmAM Hijiri
- 131 dd/mm/yy hh:mi:ss:mmmAM Hijiri

Examples

The following script uses the CONVERT () function to display a different format. We will use the GETDATE () function to get the current date / time:

CONVERT(VARCHAR(19),GETDATE())
CONVERT(VARCHAR(10),GETDATE(),10)
CONVERT(VARCHAR(10),GETDATE(),110)
CONVERT(VARCHAR(11),GETDATE(),6)
CONVERT(VARCHAR(11),GETDATE(),106)
CONVERT(VARCHAR(24),GETDATE(),113)

The results are as follows:

Nov 04 2011 11:45 PM
11-04-11
11-04-2011
04 Nov 11
04 Nov 2011
04 Nov 2011 11:45:34:243

SQL Dates SQL Server Date Functions