- Datetimeoffset (Transact-SQL) - SQL Server | Microsoft Docs
- Set Timezone In Sql
- See More On Microsoft Docs
- You Can Specify The Server's Default Timezone When You Start It, See Http://dev.mysql.com/doc/refman/5.1/en/server-options.html And Specifically..
- Azure Sql Set Timezone
- T Sql Time Zone Offset
SET timezone = 'Europe/Helsinki'; SET timezone = '+00:00'; SET @@session.timezone = '+00:00'; Both might return SYSTEM which means that they use the timezone set in my.cnf. After running the downloaded SQL query I was able to set the GLOBAL timezone and resolve the issue I had where SELECT NOW; was returning GMT rather than BST. The SET command is used with UPDATE to specify which columns and values that should be updated in a table. The following SQL updates the first customer (CustomerID = 1) with a new ContactName and a new City. If inputdate is provided as a datetimeoffset value, then AT TIME ZONE clause converts it into the target time zone using the time zone conversion rules. AT TIME ZONE implementation relies on a Windows mechanism to convert datetime values across time zones. Transact-SQL Syntax Conventions. Syntax inputdate AT TIME ZONE timezone Arguments. Dec 14, 2019 SET TIMEZONE = 'Asia/Manila'; If the string value used in the SET TIMEZONE command is invalid, Postgres will default to the current UTC (Coordinated Universal Time) time. Set the Postgres time zone with an integer You can also set the time zone using an integer value representing the hourly difference from UTC time.
-->Applies to: SQL Server (all supported versions) Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Parallel Data Warehouse
Defines a date that is combined with a time of a day that has time zone awareness and is based on a 24-hour clock.
datetimeoffset description
Property | Value |
---|---|
Syntax | datetimeoffset [ (fractional seconds precision) ] |
Usage | DECLARE @MyDatetimeoffset datetimeoffset(7) CREATE TABLE Table1 ( Column1 datetimeoffset(7) ) |
Default string literal formats (used for down-level client) | YYYY-MM-DD hh:mm:ss[.nnnnnnn] [{+|-}hh:mm] For more information, see the 'Backward Compatibility for Down-level Clients' section that follows. |
Date range | 0001-01-01 through 9999-12-31 January 1, 1 CE through December 31, 9999 CE |
Time range | 00:00:00 through 23:59:59.9999999 |
Time zone offset range | -14:00 through +14:00 |
Element ranges | YYYY is four digits, ranging from 0001 through 9999, that represent a year. MM is two digits, ranging from 01 to 12, that represent a month in the specified year. DD is two digits, ranging from 01 to 31 depending on the month, that represent a day of the specified month. hh is two digits, ranging from 00 to 23, that represent the hour. mm is two digits, ranging from 00 to 59, that represent the minute. ss is two digits, ranging from 00 to 59, that represent the second. n* is zero to seven digits, ranging from 0 to 9999999, that represent the fractional seconds. hh is two digits that range from -14 to +14. mm is two digits that range from 00 to 59. |
Character length | 26 positions minimum (YYYY-MM-DD hh:mm:ss {+|-}hh:mm) to 34 maximum (YYYY-MM-DD hh:mm:ss.nnnnnnn {+|-}hh:mm) |
Precision, scale | See the table below. |
Storage size | 10 bytes, fixed is the default with the default of 100ns fractional second precision. |
Accuracy | 100 nanoseconds |
Default value | 1900-01-01 00:00:00 00:00 |
Calendar | Gregorian |
User-defined fractional second precision | Yes |
Time zone offset aware and preservation | Yes |
Daylight saving aware | No |
Specified scale | Result (precision, scale) | Column length (bytes) | Fractional seconds precision |
---|---|---|---|
datetimeoffset | (34,7) | 10 | 7 |
datetimeoffset(0) | (26,0) | 8 | 0-2 |
datetimeoffset(1) | (28,1) | 8 | 0-2 |
datetimeoffset(2) | (29,2) | 8 | 0-2 |
datetimeoffset(3) | (30,3) | 9 | 3-4 |
datetimeoffset(4) | (31,4) | 9 | 3-4 |
datetimeoffset(5) | (32,5) | 10 | 5-7 |
datetimeoffset(6) | (33,6) | 10 | 5-7 |
datetimeoffset(7) | (34,7) | 10 | 5-7 |
Supported string literal formats for datetimeoffset
The following table lists the supported ISO 8601 string literal formats for datetimeoffset. For information about alphabetical, numeric, unseparated and time formats for the date and time parts of datetimeoffset, see date (Transact-SQL) and time (Transact-SQL).
ISO 8601 | Description |
---|---|
YYYY-MM-DDThh:mm:ss[.nnnnnnn][{+|-}hh:mm] | These two formats are not affected by the SET LANGUAGE and SET DATEFORMAT session locale settings. Spaces are not allowed between the datetimeoffset and the datetime parts. |
YYYY-MM-DDThh:mm:ss[.nnnnnnn]Z (UTC) | This format by ISO definition indicates the datetime portion should be expressed in Coordinated Universal Time (UTC). For example, 1999-12-12 12:30:30.12345 -07:00 should be represented as 1999-12-12 19:30:30.12345Z. |
Time zone offset
A time zone offset specifies the zone offset from UTC for a time or datetime value. The time zone offset can be represented as [+|-] hh:mm:
- hh is two digits that range from 00 to 14 and represent the number of hours in the time zone offset.
- mm is two digits, ranging from 00 to 59, that represent the number of additional minutes in the time zone offset.
- + (plus) or - (minus) is the mandatory sign for a time zone offset. This indicates whether the time zone offset is added or subtracted from the UTC time to obtain the local time. The valid range of time zone offset is from -14:00 to +14:00.
Datetimeoffset (Transact-SQL) - SQL Server | Microsoft Docs
The time zone offset range follows the W3C XML standard for XSD schema definition and is slightly different from the SQL 2003 standard definition, 12:59 to +14:00.
The optional type parameter fractional seconds precision specifies the number of digits for the fractional part of the seconds. This value can be an integer with 0 to 7 (100 nanoseconds). The default fractional seconds precision is 100ns (seven digits for the fractional part of the seconds).
The data is stored in the database and processed, compared, sorted, and indexed in the server as in UTC. The time zone offset will be preserved in the database for retrieval.
The given time zone offset will be assumed to be daylight saving time (DST) aware and adjusted for any given datetime that is in the DST period.
For datetimeoffset type, both UTC and local (to the persistent or converted time zone offset) datetime value will be validated during insert, update, arithmetic, convert, or assign operations. The detection of any invalid UTC or local (to the persistent or converted time zone offset) datetime value will raise an invalid value error. For example, 9999-12-31 10:10:00 is valid in UTC, but overflow in local time to the time zone offset +13:50.
To convert a date to a corresponding datetimeoffset value in a target time zone, see AT TIME ZONE (Transact-SQL).
ANSI and ISO 8601 compliance
The ANSI and ISO 8601 Compliance sections of the date and time topics apply to datetimeoffset.
Backward compatibility for down-level clients
Set Timezone In Sql
Some down-level clients do not support the time, date, datetime2 and datetimeoffset data types. The following table shows the type mapping between an up-level instance of SQL Server and down-level clients.
SQL Server data type | Default string literal format passed to down-level client | Down-level ODBC | Down-level OLEDB | Down-level JDBC | Down-level SQLCLIENT |
---|---|---|---|---|---|
time | hh:mm:ss[.nnnnnnn] | SQL_WVARCHAR or SQL_VARCHAR | DBTYPE_WSTRor DBTYPE_STR | Java.sql.String | String or SqString |
date | YYYY-MM-DD | SQL_WVARCHAR or SQL_VARCHAR | DBTYPE_WSTRor DBTYPE_STR | Java.sql.String | String or SqString |
datetime2 | YYYY-MM-DD hh:mm:ss[.nnnnnnn] | SQL_WVARCHAR or SQL_VARCHAR | DBTYPE_WSTRor DBTYPE_STR | Java.sql.String | String or SqString |
datetimeoffset | YYYY-MM-DD hh:mm:ss[.nnnnnnn] [+|-]hh:mm | SQL_WVARCHAR or SQL_VARCHAR | DBTYPE_WSTRor DBTYPE_STR | Java.sql.String | String or SqString |
Converting date and time data
When you convert to date and time data types, SQL Server rejects all values it cannot recognize as dates or times. For information about using the CAST and CONVERT functions with date and time data, see CAST and CONVERT (Transact-SQL)
Converting datetimeoffset data type to other date and time types
This section describes what occurs when a datetimeoffset data type is converted to other date and time data types.
When converting to date, the year, month, and day are copied. The following code shows the results of converting a
datetimeoffset(4)
value to a date
value.If the conversion is to time(n), the hour, minute, second, and fractional seconds are copied. The time zone value is truncated. When the precision of the datetimeoffset(n) value is greater than the precision of the time(n) value, the value is rounded up. The following code shows the results of converting a
datetimeoffset(4)
value to a time(3)
value.When converting todatetime, the date and time values are copied, and the time zone is truncated. When the fractional precision of the datetimeoffset(n) value is greater than three digits, the value is truncated. The following code shows the results of converting a
datetimeoffset(4)
value to a datetime
value.For conversions to smalldatetime, the date and hours are copied. The minutes are rounded up with respect to the seconds value and seconds are set to 0. The following code shows the results of converting a
datetimeoffset(3)
value to a smalldatetime
value.If the conversion is to datetime2(n), the date and time are copied to the datetime2 value, and the time zone is truncated. When the precision of the datetime2(n) value is greater than the precision of the datetimeoffset(n) value, the fractional seconds are truncated to fit. The following code shows the results of converting a
datetimeoffset(4)
value to a datetime2(3)
value.Converting string literals to datetimeoffset
Conversions from string literals to date and time types are permitted if all parts of the strings are in valid formats. Otherwise, a runtime error is raised. Implicit conversions or explicit conversions that do not specify a style, from date and time types to string literals will be in the default format of the current session. The following table shows the rules for converting a string literal to the datetimeoffset data type.
Input string literal | datetimeoffset(n) |
---|---|
ODBC DATE | ODBC string literals are mapped to the datetime data type. Any assignment operation from ODBC DATETIME literals into datetimeoffset types will cause an implicit conversion between datetime and this type as defined by the conversion rules. |
ODBC TIME | See previous ODBC DATE rule. |
ODBC DATETIME | See previous ODBC DATE rule. |
DATE only | The TIME part defaults to 00:00:00. The TIMEZONE defaults to +00:00. |
TIME only | The DATE part defaults to 1900-1-1. The TIMEZONE will default to +00:00. |
TIMEZONE only | Default values are supplied |
DATE + TIME | The TIMEZONE defaults to +00:00. |
DATE + TIMEZONE | Not allowed |
TIME + TIMEZONE | The DATE part defaults to 1900-1-1. |
DATE + TIME + TIMEZONE | Trivial |
Examples
The following example compares the results of casting a string to each date and time data type.
Here is the result set.
Data type | Output |
---|---|
Time | 12:35:29. 1234567 |
Date | 2007-05-08 |
Smalldatetime | 2007-05-08 12:35:00 |
Datetime | 2007-05-08 12:35:29.123 |
datetime2 | 2007-05-08 12:35:29. 1234567 |
Datetimeoffset | 2007-05-08 12:35:29.1234567 +12:15 |
See also
CAST and CONVERT (Transact-SQL)
AT TIME ZONE (Transact-SQL)
AT TIME ZONE (Transact-SQL)
Setting database and session time zone in Oracle
Oracle choose default time zone as operating system during installation of Oracle. If you want to set the database time zone at create time then use SET TIME_ZONE with CREATE DATABASE statement.
Set the time zone at database level
-- Check the time zone
SELECT dbtimezone FROM DUAL;
DBTIME
------
+00:00
--Change the time zone of database
ALTER DATABASE SET TIME_ZONE='Europe/London';
OR
ALTER DATABASE SET TIME_ZONE='-05:00';
--restart the database
Shutdown immediate;
startup
![Sql Set Timezone Sql Set Timezone](/uploads/1/3/7/2/137226673/622847448.bmp)
-- Check the time zone
SELECT dbtimezone FROM DUAL;
DBTIME
------
-05:00
War thunder live stream.See More On Microsoft Docs
Set the time zone at session level
-- use alter session commands
ALTER SESSION SET TIME_ZONE=local;
ALTER SESSION SET TIME_ZONE=dbtimezone;
ALTER SESSION SET TIME_ZONE='Asia/Hong_Kong';
ALTER SESSION SET TIME_ZONE='+10:00';
You Can Specify The Server's Default Timezone When You Start It, See Http://dev.mysql.com/doc/refman/5.1/en/server-options.html And Specifically..
SQL> SELECT sessiontimezone FROM DUAL;
SESSIONTIMEZONE
---------------
+05:30
SQL> alter session set time_zone='+10:00';
Session altered.
Azure Sql Set Timezone
SQL> SELECT sessiontimezone FROM DUAL;
SESSIONTIMEZONE
---------------
+10:00
T Sql Time Zone Offset
Convert timezone from one to another
SELECT FROM_TZ(CAST(TO_DATE('2018-11-02 03:00:00','YYYY-MM-DD HH:MI:SS') AS TIMESTAMP), '+5:30') AT TIME ZONE '-6:00' 'West Coast Time' FROM DUAL;