List of yyyymm format dates of last 3 months for a given date 2019-12-31

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I want a list of dates in the format of yyyymm of the past 3 months

For the given input_date unknown datatype

Input_date = 2019-12-31 

Required output

201912
201911
210910

Numeric values

I want to use the solution query as a sub query of another query

Select * from table where fyr_actg_prd in 
(select to_number(to_char(add_months(to_date(input_date,'yyyy-mm-dd'),1-LEVEL), 'yyyymm')) from dual connect by LEVEL <=3)

The above query when acted it is giving

Select * from table where fyr_actg_prd in 
    (select to_number(to_char(add_months(to_date(2019-12-31,'yyyy-mm-dd'),1-LEVEL), 'yyyymm')) from dual connect by LEVEL <=3)

Fyr_actg_prd is numeric datatype

THE PROBLEM WITH THE ABOVE SOLUTION IS the input_date is without single quotes so error


Try the following:

SELECT TO_CHAR(ADD_MONTHS(:INPUT_DATE,-LEVEL+1),'YYYYMM') FROM dual CONNECT BY LEVEL < 4

SQL - DATE and TIME Functions, Dates in a database aren't stored as strings, but we input where the letters stand for Year, Month, Day, Hour, To represent that exact date and time we would use the format: of the previous ones we've been using have had date SELECT * FROM employees LIMIT 3;. Just put quotes around the string date: Select to_date ('2019-12-31', 'yyyy-mm-dd') List of yyyymm format dates of last 3 months for a given date 2019-12-31.


You can use add_months() function within a query containing connect by level <= 3 :

with t as
(
 select date'2019-12-31' as input_date
   from dual     
)
select to_char( add_months(input_date, 1 - level ) , 'yyyymm' ) as months
  from t
 connect by level <=  3 

Demo

Python Datetime Tutorial: Manipulate Times, Dates, and Time Spans, datetime – Allows us to manipulate times and dates together (month, day, year, Let's give it a date string in YYYY-MM-DD format and see what it can do! my_string = '2019-10-31' # Create date object in given time format yyyy-mm-dd do so with indexing just as we might for any other Python list or tuple: I looking to format a date/time field as an interger in the format of YYYYMM. Below works, but I cannot figure out how to remove the day part (DD). Thanks. input(put(datepart(r.MyDate),yymmddn8.),8.) as MyDateFormatted format=8. Example: MyDate=10MAR2017:13:29:57.000 Need=201703 as numeric


Don't generate all the values, just use BETWEEN:

SELECT *
FROM   table
WHERE  fyr_actg_prd BETWEEN TO_CHAR( ADD_MONTHS( :input_date, -2 ), 'YYYYMM' )
                    AND     TO_CHAR( :input_date, 'YYYYMM' )

If you want to generate values you can use a hierarchical query:

SELECT *
FROM   table_name
WHERE  fyr_actg_prd IN (
  SELECT TO_CHAR( ADD_MONTHS( :input_date, LEVEL - 3 ), 'YYYYMM' )
  FROM   DUAL
  CONNECT BY LEVEL <= 3
);

or a recursive sub-query:

WITH months ( month, idx ) AS (
  SELECT TO_CHAR( :input_date, 'YYYYMM' ),
         1
  FROM   DUAL
UNION ALL
  SELECT TO_CHAR( ADD_MONTHS( :input_date, -idx ), 'YYYYMM' ),
         idx + 1
  FROM   months
  WHERE  idx < 2
)
SELECT *
FROM   table_name
WHERE  fyr_actg_prd IN ( SELECT month FROM months );

[PDF] TO_CHAR Function with Dates, format. The TO_CHAR function allows you to convert a date from this default fomat to The names of days and months in the output are automatically 7900 Aralık 3, 1981 Seconds past midnight (0-86399) The oracle TO_DATE function converts a string in a specified format to an to_date ('2003/07/09', 'yyyy /mm/dd');. Suppose you have data in a table in format YYYY-MM-DD hh:mm: ss. You have a daily Sales report, and in that, you want data group by date. You want to have data in the report in format YYYY-MM-DD We do face many such scenarios when we do not have date format as per our requirement. We cannot change table properties to satisfy each requirement.


Filtering with dates in the QUERY function -, If you've ever tried to filter on a date column in the Query function in Google function requires a date as a string literal in the format yyyy-mm-dd, You'll also notice that I had to add 1 to the month(), that's because it's 0-based. I am trying to filter dates from last week and 3 week out from my spreadsheet. For example user can input date one of the following 20120121 , 2012-01-21 ,01/21/2012,01/21/2012 etc But I need to convert any of the date entered by user into yyyy/mm/dd (2012/01/2012). Any suggestion.


Date Format Types, Format. Date order. Description 3. YY/MM/DD. Year-Month-Day with leading zeros (2009/02/17). 4. Month D, Yr Valid dates may differ depending on the type of machine (PC or host) and the type of CPU chip. Format type 1 with a four-digit year (no separator specified but the format type includes separators so the´┐Ż In the case of dates, the pre-set options simplify the process of checking your data for dates close to the current date such as yesterday, tomorrow, last week, or next month. If you want to check for dates that fall outside of the listed options, however, customize the conditional formatting by adding your own formula using one or more of


4 Datetime Datatypes and Time Zone Support, An ANSI date literal contains no time portion and must be specified in exactly the following The default date format for an Oracle date value is derived from the the day of the month, an abbreviation of the month name, the last two digits of the Example 4-3 Inserting Data into the TIMESTAMP WITH TIME ZONE Datatype. I have several thousand lines of date data in a column and it comes out in the following format: Please Login or Register to view this content. etc where, 2012 is the year and 02,03,04 are the months (yyyymm).