CONVERT(data_type,expression[,style])
说明:
此样式一般在时间类型(datetime,smalldatetime)与字符串类型(nchar,nvarchar,char,varchar)
相互转换的时候才用到.
例子:
SELECT CONVERT(varchar(30),getdate(),101) now
结果为:
now
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|09/15/2001
===================================================================
style数字在转换时间时的含义如下:
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Style(2位表示年份)?? |? Style(4位表示年份)?? |?? 输入输出格式???????????????????????????????????
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0?????????????????????????????? | 100?????????????????????????? |?? mon dd yyyy hh:miAM(或PM)?????????????
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1?????????????????????????????? |? 101?? 美国??????????????? |?? mm/dd/yy??????????????????????????????????????
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2?????????????????????????????? |? 102??? ANSI?????????????? |?? yy-mm-dd???????????????????????????????????????
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3?????????????????????????????? |? 103??? 英法??????????????? |?? dd/mm/yy??????????????????????????????????????
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4?????????????????????????????? |? 104??? 德国??????????????? |?? dd.mm.yy???????????????????????????????????????
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5?????????????????????????????? |? 105??? 意大利???????????? |?? dd-mm-yy???????????????????????????????????????
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6?????????????????????????????? |? 106??????????????????????????? |?? dd mon yy???????????????????????????????????????
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7?????????????????????????????? |? 107??????????????????????????? |?? mon dd,yy???????????????????????????????????????
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8?????????????????????????????? |? 108??????????????????????????? |?? hh:mm:ss????????????????????????????????????????
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9?????????????????????????????? |? 109??????????????????????????? |?? mon dd yyyy hh:mi:ss:mmmmAM(或PM)
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10???????????????????????????? |? 110??? 美国???????????????? |?? mm-dd-yy????????????????????????????????????????
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11???????????????????????????? |? 111??? 日本???????????????? |?? yy/mm/dd???????????????????????????????????????
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12???????????????????????????? |? 112??? ISO????????????????? |?? yymmdd??????????????????????????????????????????
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13???????????????????????????? |? 113???? 欧洲默认值???? |?? dd mon yyyy hh:mi:ss:mmm(24小时制)?
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14???????????????????????????? |? 114??????????????????????????? |?? hh:mi:ss:mmm(24小时制)???????????????????
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20???????????????????????????? |? 120???? ODBC 规范???? |??? yyyy-mm-dd hh:mi:ss(24小时制)????????
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21???????????????????????????? |?? 121?????????????????????????? |??? yyyy-mm-dd hh:mi:ss:mmm(24小时制)
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语句及查询结果： SELECT CONVERT(varchar(100),GETDATE(),0): 05 16 2006 10:57AM SELECT CONVERT(varchar(100),1): 05/16/06 SELECT CONVERT(varchar(100),2): 06.05.16 SELECT CONVERT(varchar(100),3): 16/05/06 SELECT CONVERT(varchar(100),4): 16.05.06 SELECT CONVERT(varchar(100),5): 16-05-06 SELECT CONVERT(varchar(100),6): 16 05 06 SELECT CONVERT(varchar(100),7): 05 16,06 SELECT CONVERT(varchar(100),8): 10:57:46 SELECT CONVERT(varchar(100),9): 05 16 2006 10:57:46:827AM SELECT CONVERT(varchar(100),10): 05-16-06 SELECT CONVERT(varchar(100),11): 06/05/16 SELECT CONVERT(varchar(100),12): 060516 SELECT CONVERT(varchar(100),13): 16 05 2006 10:57:46:937 SELECT CONVERT(varchar(100),14): 10:57:46:967 SELECT CONVERT(varchar(100),20): 2006-05-16 10:57:47 SELECT CONVERT(varchar(100),21): 2006-05-16 10:57:47.157 SELECT CONVERT(varchar(100),22): 05/16/06 10:57:47 AM SELECT CONVERT(varchar(100),23): 2006-05-16 SELECT CONVERT(varchar(100),24): 10:57:47 SELECT CONVERT(varchar(100),25): 2006-05-16 10:57:47.250 SELECT CONVERT(varchar(100),100): 05 16 2006 10:57AM SELECT CONVERT(varchar(100),101): 05/16/2006 SELECT CONVERT(varchar(100),102): 2006.05.16 SELECT CONVERT(varchar(100),103): 16/05/2006 SELECT CONVERT(varchar(100),104): 16.05.2006 SELECT CONVERT(varchar(100),105): 16-05-2006 SELECT CONVERT(varchar(100),106): 16 05 2006 SELECT CONVERT(varchar(100),107): 05 16,2006 SELECT CONVERT(varchar(100),108): 10:57:49 SELECT CONVERT(varchar(100),109): 05 16 2006 10:57:49:437AM SELECT CONVERT(varchar(100),110): 05-16-2006 SELECT CONVERT(varchar(100),111): 2006/05/16 SELECT CONVERT(varchar(100),112): 20060516 SELECT CONVERT(varchar(100),113): 16 05 2006 10:57:49:513 SELECT CONVERT(varchar(100),114): 10:57:49:547 SELECT CONVERT(varchar(100),120): 2006-05-16 10:57:49
（编辑：李大同）
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