What Is the Inverse Of Sys_extract_utc() In Oracle?

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The inverse of sys_extract_utc() in Oracle is sys_extract_utc(datetime, timezone). This function converts a UTC datetime to a datetime in the specified timezone. It is used to retrieve the date and time in a particular timezone based on a UTC datetime input.

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How to negate the UTC conversion of sys_extract_utc() in oracle?

To negate the UTC conversion of sys_extract_utc() in Oracle, you can simply subtract the UTC offset from the result.


For example:

1
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SELECT sys_extract_utc(SYSTIMESTAMP) - SYSTIMESTAMP
FROM dual;


This will give you the timestamp in the local time zone without the UTC conversion.


How to revert the sys_extract_utc() transformation in oracle?

To revert the sys_extract_utc() transformation in Oracle, you can use the sys_extract_utc() function with the TO_TIMESTAMP_TZ function to convert the timestamp back to the original timezone.


Here's an example of how you can do this:


SELECT TO_TIMESTAMP_TZ(sys_extract_utc(your_utc_timestamp),'UTC') AS original_timestamp FROM your_table;


In this query, replace "your_utc_timestamp" with the column or expression that contains the UTC timestamp you want to revert. This query will convert the UTC timestamp back to the original timezone and display the original timestamp.


How to revert the sys_extract_utc() UTC transformation in oracle?

To revert the sys_extract_utc() UTC transformation in Oracle, you can use the following steps:

  1. Determine the original timezone that was converted to UTC using sys_extract_utc(). This information is important in order to properly convert the UTC back to the original timezone.
  2. Use the sys_extract_utc() function with the original timezone to convert the UTC timestamp back to the original timezone. For example:
1
SELECT sys_extract_utc(<UTC_timestamp_column>, '<original_timezone>') FROM <table_name>;


  1. Replace with the column name of the UTC timestamp and with the original timezone before it was converted to UTC.
  2. This query will return the timestamp converted back to the original timezone.


By following these steps, you can revert the sys_extract_utc() UTC transformation in Oracle back to the original timezone.


How to get the original timestamp from sys_extract_utc() in oracle?

You can get the original timestamp from sys_extract_utc() in Oracle by using the FROM_TZ function to convert it back to the original timezone. Here's an example:

1
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SELECT FROM_TZ(sys_extract_utc(SYSTIMESTAMP), 'UTC') AS original_timestamp
FROM dual;


This query will return the original timestamp in the local timezone. You can replace 'UTC' with the original timezone if it's not UTC.


What is the reverse action for sys_extract_utc() in oracle?

The reverse action for sys_extract_utc() in Oracle is sys_extract_utc(datetime_value, time_zone). This function converts the specified UTC date and time value to the corresponding local time in the specified time zone.


What is the reverse function for sys_extract_utc() in oracle?

The reverse function for sys_extract_utc() in Oracle is sys_extract_utc() itself. This function extracts the Coordinated Universal Time (UTC) from a given input timestamp.

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