sql中获取 utc 格林威治标准时间转换-问题解答-科瑞特软件

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sql中获取 utc 格林威治标准时间转换

作者：admin　日期：2010年08月07日　来源：互联网浏览：次

核心提示：The following examples use the six SQL Server system functions that return current date and time to return the date, time or both. The values are returned in series; therefore, their fractional

The following examples use the six SQL Server

system functions that return current date

and time to return the date, time or both.

The values are returned in series;

therefore, their fractional seconds

might be different.

A. Getting the current system date and time

Copy

SELECT 'SYSDATETIME()      ', SYSDATETIME();
SELECT 'SYSDATETIMEOFFSET()', SYSDATETIMEOFFSET();
SELECT 'SYSUTCDATETIME()   ', SYSUTCDATETIME();
SELECT 'CURRENT_TIMESTAMP  ', CURRENT_TIMESTAMP;
SELECT 'GETDATE()          ', GETDATE();
SELECT 'GETUTCDATE()       ', GETUTCDATE();
/* Returned:
SYSDATETIME()            2007-05-03 18:34:11.9351421
SYSDATETIMEOFFSET()      2007-05-03 18:34:11.9351421 -07:00
SYSUTCDATETIME()         2007-05-04 01:34:11.9351421
CURRENT_TIMESTAMP        2007-05-03 18:34:11.933
GETDATE()                2007-05-03 18:34:11.933
GETUTCDATE()             2007-05-04 01:34:11.933
*/

B. Getting the current system date

Copy

SELECT 'SYSDATETIME()      ', CONVERT (date, SYSDATETIME());
SELECT 'SYSDATETIMEOFFSET()', CONVERT (date, SYSDATETIMEOFFSET());
SELECT 'SYSUTCDATETIME()   ', CONVERT (date, SYSUTCDATETIME());
SELECT 'CURRENT_TIMESTAMP  ', CONVERT (date, CURRENT_TIMESTAMP);
SELECT 'GETDATE()          ', CONVERT (date, GETDATE());
SELECT 'GETUTCDATE()       ', CONVERT (date, GETUTCDATE());
/* Returned: 
SYSDATETIME()            2007-05-03
SYSDATETIMEOFFSET()      2007-05-03
SYSUTCDATETIME()         2007-05-04
CURRENT_TIMESTAMP        2007-05-03
GETDATE()                2007-05-03
GETUTCDATE()             2007-05-04
*/

C. Getting the current system time

Copy

SELECT 'SYSDATETIME()      ', CONVERT (time, SYSDATETIME());
SELECT 'SYSDATETIMEOFFSET()', CONVERT (time, SYSDATETIMEOFFSET());
SELECT 'SYSUTCDATETIME()   ', CONVERT (time, SYSUTCDATETIME());
SELECT 'CURRENT_TIMESTAMP  ', CONVERT (time, CURRENT_TIMESTAMP);
SELECT 'GETDATE()          ', CONVERT (time, GETDATE());
SELECT 'GETUTCDATE()       ', CONVERT (time, GETUTCDATE());
/* Returned
SYSDATETIME()            18:25:01.6958841
SYSDATETIMEOFFSET()      18:25:01.6958841
SYSUTCDATETIME()         01:25:01.6958841
CURRENT_TIMESTAMP        18:25:01.6930000
GETDATE()                18:25:01.6930000
GETUTCDATE()             01:25:01.6930000
*/

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