In SQL how to calculate how many days ago last Monday was

Hi everyone
We are on V7r3
I have a number of SQL queries that are run early each Monday, that collects data from the previous Monday through yesterday (Sunday), using the following code

WHERE nbtygpl.idate((a.CHKDAT), '*MDY')
between (current_date - 7 day) and
(current_date - 1 day) and
Followed by Other selection criteria

I was asked today (Wednesday September 1, 2021) if I could run these but extract the data from this past Monday (August 30, 2021)
So - for today - I changed the selection criteria to be
WHERE nbtygpl.idate((a.CHKDAT), '*MDY')
between (current_date - 2 day) and
(current_date - 1 day) and
Followed by the remaining selection criteria

It looks like this "special" run will be needed for each month end

NOW - here is my question
In SQL, s there any way to determine how long ago the prior Monday was?
So that if the job is run on a Monday - the field Prior_Mondays_days_ago (in the SQL below) is 7

between (current_date - Prior_Mondays_days_ago day) and

If the job is run on Tuesday - Prior_Mondays_days_ago (in the SQL) is 1
Wednesday - Prior_Mondays_days_ago (in the SQL) is 2
Thursday - Prior_Mondays_days_ago (in the SQL) is 3
Friday - Prior_Mondays_days_ago (in the SQL) is 4
Saturday - Prior_Mondays_days_ago (in the SQL) is 5
Sunday - Prior_Mondays_days_ago (in the SQL) is 6
Monday - Prior_Mondays_days_ago (in the SQL) is 7
As always - all answers gratefully accepted



Alan Shore
Solutions Architect
IT Supply Chain Execution

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