To get the current timestamp in EST timezone from Oracle, you can use the following query:
SELECT systimestamp AT TIME ZONE 'US/Eastern' FROM dual;
This query will return the current timestamp in Eastern Standard Time (EST). Make sure to adjust the timezone value based on your desired timezone.
How to retrieve the current timestamp in Oracle?
To retrieve the current timestamp in Oracle, you can use the SYSTIMESTAMP
function. This function returns the current timestamp in the session's time zone.
Here is an example of how to retrieve the current timestamp in Oracle:
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SELECT SYSTIMESTAMP FROM dual;
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This query will return the current timestamp including date, time, and fractional seconds.
Alternatively, you can use the CURRENT_TIMESTAMP
function to retrieve the current timestamp in Oracle. This function also returns the current timestamp in the session's time zone.
Here is an example of how to retrieve the current timestamp using the CURRENT_TIMESTAMP
function:
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SELECT CURRENT_TIMESTAMP FROM dual;
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Both SYSTIMESTAMP
and CURRENT_TIMESTAMP
functions will provide you with the current timestamp in Oracle.
How to extract the hour from a timestamp in Oracle?
You can extract the hour from a timestamp in Oracle by using the EXTRACT function. Here is an example:
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SELECT EXTRACT(HOUR FROM your_timestamp_column) AS hour FROM your_table; |
This will extract the hour from the timestamp stored in the column "your_timestamp_column" in the table "your_table".
How to get the timestamp of the next month in Oracle?
You can get the timestamp of the next month in Oracle by using the interval function to add a month to the current timestamp. Here is an example query to accomplish this:
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SELECT SYSTIMESTAMP + INTERVAL '1' MONTH AS next_month_timestamp FROM dual; |
This query will return the timestamp of the next month from the current timestamp.
How to get the timestamp of the end of the day in Oracle?
You can get the timestamp of the end of the day in Oracle by using the TRUNC function to set the time to midnight, and then adding 1 day and subtracting 1 second. Here's an example query:
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SELECT TRUNC(SYSDATE) + INTERVAL '1' DAY - INTERVAL '1' SECOND AS end_of_day FROM dual; |
This query will return the timestamp of the end of the current day in Oracle. You can adjust the SYSDATE function to get the end of a specific day by replacing it with the desired date.
How to get the timestamp of the beginning of the year in Oracle?
You can get the timestamp of the beginning of the year in Oracle by using the TRUNC
function to truncate the current timestamp to the beginning of the year. Here is an example query:
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SELECT TRUNC(SYSDATE, 'YEAR') AS beginning_of_year FROM dual; |
This query will return the timestamp of the beginning of the current year. If you want to get the beginning of a specific year, you can use a date value instead of SYSDATE
in the TRUNC
function.
How to format a timestamp in Oracle?
In Oracle, you can format a timestamp using the TO_TIMESTAMP function and specifying the desired format mask. Here is an example of how to format a timestamp in Oracle:
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SELECT TO_CHAR(your_timestamp_column, 'YYYY-MM-DD HH24:MI:SS') AS formatted_timestamp FROM your_table; |
In the above query, replace your_timestamp_column
with the column containing the timestamp data and your_table
with the name of your table. The TO_CHAR
function is used to convert the timestamp to a string with the specified format mask 'YYYY-MM-DD HH24:MI:SS'.
You can customize the format mask in the TO_CHAR
function to fit your specific requirements. Here are some common format elements that can be used in the format mask:
- YYYY: year
- MM: month
- DD: day
- HH24: hour (24-hour format)
- MI: minute
- SS: second
You can combine these elements with any desired separators, spaces, or text. For more options and details on formatting timestamps in Oracle, refer to the Oracle documentation on date format models.