Question

Hi I am a bit stuck here. I am trying to create 3 labels for a contract called “Green”,”Yellow”, and “Red”. The labels are identified by the formula contractdate-curdate().
– Green if it is more than 90 days away.
– Yellow – if the = end date is between 31 and 89 days
– Red if the end date is 30 days or less

I need a way to either create a column for Label and put each contract in their respective color, or create 3 columns for each color with an identifier?

These are a couple queries i’ve made but with no luck.

select 
    contractname, contractenddate
from
    contract
where
    contractenddate between CurDate() and Date_Add(CurDate(), INTERVAL 30 DAY)
        and contractenddate between CurDate() and Date_Add(CurDate(), INTERVAL 60 DAY)
and contractenddate between CurDate() and Date_Add(CurDate(), INTERVAL 90 DAY)

and

select contractname, date_sub(contractenddate,interval 0-30 day)as Red,
date_sub(contractenddate,interval 31-89 day)as Yellow,
date_sub(contractenddate,interval 90 day)as Green
 from contract

I know these are incorrect but perhaps someone could help build on these? It would be GREATLY appreicated!!! One last note is I am unable to alter the database structure, I can only use select statements.

Thanks a TON in advance!

Answer 1

Something like this work? Look into using DATEDIFF and CASE:

SELECT contractname, 
  contractenddate,
  CASE
      WHEN DATEDIFF(CurDate(),contractenddate) <= 30 THEN 'Red'
      WHEN DATEDIFF(CurDate(),contractenddate) < 90 THEN 'Yellow'
      ELSE 'Green'
  END Label
FROM Contract

Here is the SQL Fiddle.

And if you want the number of days away, you could add the following to your SQL Statement:

DATEDIFF(CurDate(),contractenddate) DaysAway

Alternatively, if you need Red, Yellow and Green as Columns, something very similar would work:

SELECT contractname, 
  contractenddate,
  CASE WHEN DATEDIFF(CurDate(),contractenddate) <= 30 THEN 'X' ELSE '' END 'Red',
  CASE WHEN DATEDIFF(CurDate(),contractenddate) < 90 AND DATEDIFF(CurDate(),contractenddate) > 30 THEN 'X' ELSE '' END 'Yellow',
  CASE WHEN DATEDIFF(CurDate(),contractenddate) >= 90 THEN 'X' ELSE '' END 'Green'
FROM Contract

I’ve put an ‘X’ to mark which have which. Wasn’t quite clear what you were looking for.

More fiddle.

Good luck.