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How to Get Year With Fractional Part From Date In Oracle?

2 minutes read

To get the year with a fractional part from a date in Oracle, you can use the following SQL query:

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SELECT EXTRACT(YEAR FROM your_date) + (TO_NUMBER(TO_CHAR(your_date, 'DDD')) - 1) / 365.0 AS year_with_fractional_part
FROM your_table;


This query extracts the year from the date and adds the fraction representing the day of the year divided by 365.0 (the total number of days in a year). This will give you the year with a fractional part.


What is the behavior of arithmetic operations on year with decimal in Oracle?

In Oracle, arithmetic operations on a year with a decimal value will result in an error. This is because Oracle does not allow for decimal values in year data types.


If you need to perform arithmetic operations on a date or timestamp that includes a year with decimal, you will need to first extract the year from the date, convert it to a number, perform the arithmetic operation, and then convert it back to a date or timestamp if needed.


For example, to add 0.5 years to a date in Oracle, you would need to extract the year, convert it to a number, add 0.5 to the number, and then convert it back to a date.

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SELECT 
  TO_DATE(TO_CHAR(date_column, 'YYYY') + 0.5, 'YYYY')
FROM 
  table_name;


Remember to modify the above statement based on your specific requirements and column names in your database.


How can I get the year with fractional part from a date column in Oracle?

You can use the EXTRACT function in Oracle to extract the fractional part of the year from a date column. Here is an example query to achieve this:

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SELECT EXTRACT(YEAR FROM your_date_column) + 
       (TO_NUMBER(TO_CHAR(your_date_column, 'FF3')) / 1000) AS year_fractional
FROM your_table;


In this query, your_date_column is the column containing the date values, and your_table is the table where the column is located. The EXTRACT(YEAR FROM your_date_column) function extracts the whole part of the year, while TO_NUMBER(TO_CHAR(your_date_column, 'FF3')) / 1000 calculates the fractional part of the year by converting the miliseconds to a fractional value.


How to calculate year with fractional part from a date in Oracle?

In Oracle, you can calculate the year with a fractional part from a date by using the following SQL query:

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SELECT EXTRACT(YEAR FROM your_date) + (TO_NUMBER(TO_CHAR(your_date, 'DDD')) - 1) / TO_NUMBER(TO_CHAR(LAST_DAY(your_date), 'DDD')) AS year_with_fractional
FROM your_table;


Replace your_date with the date column in your table and your_table with the name of your table.


This query calculates the year of the date and then adds the fractional part based on the day of the year. This will give you the year with a fractional part.


What is the precision of year with decimal in Oracle?

In Oracle, the precision of a YEAR with decimal data type is up to 9 digits before the decimal point and up to 4 digits after the decimal point. This allows for a high level of precision when working with year values that include fractions of a year.

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