How to Get the Previous Working Day From Oracle?

To get the previous working day from an Oracle database, you can use the TRUNC function to remove the time portion of a date, and then use the CASE statement to check if the previous day is a Saturday or Sunday. If it is, you can return the previous business day by subtracting an additional day. Finally, you can use the result in your query to retrieve data related to the previous working day from the database.

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How to find the date of the previous working day in Oracle SQL?

To find the date of the previous working day in Oracle SQL, you can use the following query:

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SELECT 
  CASE 
    WHEN TO_CHAR(sysdate - 1, 'DY', 'NLS_DATE_LANGUAGE=ENGLISH') IN ('SAT', 'SUN') THEN sysdate - 1
    ELSE sysdate - 1
  END AS previous_working_day
FROM dual;

In this query, sysdate - 1 is the date of the previous day. The CASE statement checks if the previous day is a Saturday or Sunday (non-working days) and if so, it subtracts an additional day to get the previous working day. Finally, the result is displayed as previous_working_day.

What is the formula to get the previous working day in Oracle?

To get the previous working day in Oracle, you can use the following formula:

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SELECT CASE 
    WHEN to_char(sysdate - 1, 'DY', 'NLS_DATE_LANGUAGE=ENGLISH') = 'SAT' THEN sysdate - 2
    WHEN to_char(sysdate - 1, 'DY', 'NLS_DATE_LANGUAGE=ENGLISH') = 'SUN' THEN sysdate - 3
    ELSE sysdate - 1
END AS previous_working_day
FROM dual;

This formula calculates the previous day of the current date and checks if it falls on a Saturday or Sunday. If it does, it adjusts the date accordingly to get the previous working day.

What is the formula to determine the previous working day in Oracle database?

To determine the previous working day in Oracle database, you can use the following formula:

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SELECT CASE 
         WHEN TO_CHAR(SYSDATE, 'DY', 'NLS_DATE_LANGUAGE = American') = 'MON' 
           THEN TRUNC(sysdate - 3)
         ELSE TRUNC(sysdate - 1) 
       END AS previous_work_day
FROM dual;

This formula checks if the current day is Monday, then subtracts 3 days to get the previous Friday. Otherwise, it subtracts 1 day to get the previous working day.

What is the function to find the last working day in Oracle SQL?

There isn't a built-in function in Oracle SQL to directly find the last working day of the month. However, you can achieve this by using a combination of functions such as LAST_DAY to get the last day of the month and TO_CHAR to get the day of the week.

Here's an example query to find the last working day of the month in Oracle SQL:

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SELECT 
  LAST_DAY(SYSDATE),
  TO_CHAR(LAST_DAY(SYSDATE), 'DAY') AS day_of_week,
  CASE 
    WHEN TO_CHAR(LAST_DAY(SYSDATE), 'DAY') IN ('SATURDAY', 'SUNDAY') THEN LAST_DAY(SYSDATE) - 1
    ELSE LAST_DAY(SYSDATE)
  END AS last_working_day
FROM dual;

In this query, SYSDATE is used to get the current date, LAST_DAY is used to get the last day of the month, TO_CHAR is used to get the day of the week, and a CASE statement is used to check if the last day of the month is a Saturday or Sunday, and if so, subtracts a day to get the last working day.

What is the query to find yesterday's date excluding weekends in Oracle?

To find yesterday's date excluding weekends in Oracle, you can use the following query:

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SELECT 
  CASE 
    WHEN TO_CHAR(SYSDATE-1, 'Dy') = 'Sun' THEN SYSDATE-2 
    WHEN TO_CHAR(SYSDATE-1, 'Dy') = 'Mon' THEN SYSDATE-3 
    ELSE SYSDATE-1 
  END AS yesterday_excluding_weekends 
FROM dual;

This query will check if yesterday's date is a Sunday or Monday, and adjust the date accordingly to skip the weekend.