Oracle: Date Range - sql

Question

I have the below Query & table:
Problem:
I'm trying to capture IDs that were Reassigned for that month.
For example the month of August total number of ReAssigned would be 1 and not 3
How can this be captured?
I need to count Per Month, for example. How mamy ids were reassigned for the month of August, Sept, ect.
So, the Most_Rent_Assigment date needs to fall within the month
Aug: 8/1-8/31
Sept: 9/1-9/30
Then count to capture how many ids were reassigned in that month
,CASE WHEN
H.FIRST_ASSGN_DT IS NULL THEN 'UnAssigned'
WHEN h.TOTAL_NUMBER_OF_REASSIGNMENTS = 0 OR h.TOTAL_NUMBER_OF_REASSIGNMENTS IS NULL
AND h.FIRST_ASSGN_DT IS NOT NULL THEN 'NewlyAssigned'
ELSE 'ReAssigned'
END ASSIGNED_STATUS
Table:
ID Total_Number_Reassignment Most_Recent_Assignment StartDate *Assigned Status
1 2 11/01/2016 08/1/2017 ReAssigned
2 3 08/02/2017 08/01/2017 ReAssigned
3 0 08/15/2017 NewlyAssigned
4 5 12/01/2016 09/01/2017 ReAssigned

Answer 1

Date ranges in Oracle can be accomplished by using BETWEEN.
If the columns are type DATE then you can just do: WHERE TRUNC(Most_Recent_Assignment) BETWEEN TO_DATE('2017-08-01') AND TO_DATE('2017-08-31')
Note: the TRUNC will truncate the date to midnight, so you don't lose results based on time of day.
Edit:
OP clarified his question.
To count occurrences for a particular month, you can group by month.
SELECT
TO_CHAR('Most_Recent_Assignment', 'mm'),
COUNT(TO_CHAR('Most_Recent_Assignment', 'mm'))
FROM TABLE
WHERE ...
GROUP BY TO_CHAR('Most_Recent_Assignment', 'mm')
TO_CHAR parses a date as a string. mm will return a 2-digit month. You can replace it with Month to get the name of the month.
The group will put all months together.