How to convert from different US Time Zones to IST using SQL?

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SQL

Hi,

I have the Data in a an SQL DataTable by the name DPSDateTime. Shown below are the data columns with values:

crea_date Disp_Day Disp_Time State TimeZone
11/13/14 5:56 PM Thursday, December 18, 2014 19:00:09 IL (GMT-06:00) Central Time (US & Canada)
11/24/14 11:17 AM Wednesday, December 24, 2014 10:27:44 WA (GMT-07:00) Mountain Time (US & Canada)
12/12/14 1:19 PM Wednesday, December 24, 2014 19:24:33 WI (GMT-06:00) Central Time (US & Canada)
12/13/14 12:05 PM Thursday, December 25, 2014 12:36:27 CA (GMT-05:00) Eastern Time (US & Canada)
12/17/14 11:33 AM Monday, December 29, 2014 08:16:35 OR (GMT-08:00) Pacific Time (US & Canada); Tijuana
12/17/14 2:03 PM Thursday, December 25, 2014 13:00:21 CA (GMT-05:00) Eastern Time (US & Canada)
12/18/14 11:05 AM Thursday, December 25, 2014 15:06:44 TX (GMT-06:00) Central Time (US & Canada)
12/18/14 9:16 AM Thursday, December 25, 2014 07:59:16 WA (GMT-07:00) Mountain Time (US & Canada)
12/18/14 5:27 PM Saturday, December 20, 2014 11:23:04 WA (GMT-07:00) Mountain Time (US & Canada)
12/19/14 10:07 AM Monday, December 29, 2014 06:55:31 LA (GMT-06:00) Central Time (US & Canada)
12/22/14 4:44 PM Monday, December 22, 2014 18:20:27 NJ (GMT-05:00) Eastern Time (US & Canada)
12/22/14 4:53 PM Monday, December 22, 2014 17:47:08 OK (GMT-06:00) Central Time (US & Canada)
12/23/14 1:31 PM Friday, December 26, 2014 18:37:00 NH (GMT-05:00) Eastern Time (US & Canada)
12/23/14 3:18 PM Tuesday, December 23, 2014 21:25:26 MS (GMT-06:00) Central Time (US & Canada)
12/23/14 4:37 PM Friday, December 26, 2014 15:28:04 MD (GMT-05:00) Eastern Time (US & Canada)

SQL

In the above table crae_date column has DateTime Value and State and TimeZone Columns show the respective Sate and TimeZones for the value in crea_date column.

I want to add another Column by the Name ISTTime. I want to show the value of the crea_date column converted into IST (Indian Standard Time) in this column.

Thanks in advance.

Posted 11-Jan-15 23:52pm

ZohaibRazaTheDProgrammer

Updated 12-Jan-15 0:30am

v2

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Sinisa Hajnal 12-Jan-15 6:04am

Parse your disp_time, take time difference from GMT, add your time difference and add the total to crae_time via DateAdd function.

ZohaibRazaTheDProgrammer 12-Jan-15 6:27am

@Sinisa Hanjal

Thanks for your quick response. It would be very helpful if you could post a meaningful SQL QUERY to achieve what you have mentioned in your response (viz. Parse your disp_time, take time difference from GMT, add your time difference and add the total to crae_time via DateAdd function).

Thanks in Advance.

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King Fisher · Answer 1 · 2015-01-12T00:06:00

Here is the Example for Convert Between the Time Zones :

IST to Central Time Zone

SQL

select cast(switchoffset(todatetimeoffset(GETDATE(), '+05:30'), '-06:00') as datetime) as DateTime

Central Time Zone to IST

SQL

select cast(switchoffset(todatetimeoffset(GETDATE(), '-06:00'), '+05:30') as datetime)as DateTime

Sinisa Hajnal · Answer 2 · 2015-01-12T20:40:00

This will return -06:00 from 2014 19:00:09 IL (GMT-06:00)

SQL

SELECT SUBSTRING(disp_time, CHARINDEX('GMT', disp_time)+3, 6)

Using this for datetime offset gives final query (assuming King Fishers +5:30 is right):

SQL

SELECT CAST(SWITCHOFFSET(TODATETIMEOFFSET(crea_date, SUBSTRING(disp_time, CHARINDEX('GMT', disp_time)+3, 6), '+05:30') as datetime )

If this helps please take time to accept the solution. Thank you.

How to convert from different US Time Zones to IST using SQL?

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