Retrieve different customer status - sql

Question

I want to write a query to retrieve the result from the table.
When the name all my statuses are completed to show me completed. When the status has completed but there is another status such as in progress or created then show only the other status
CustomName
STATUS
order
Ivan Ivanov
completed
1
Stoqn Stoqnov
completed
1
Dimityr Ivanov
completed
1
Ivan Ivanov
completed
2
Dimityr Ivanov
completed
2
Ivan Ivanov
inprocess
2
Stoqn Stoqnov
completed
2
Dimityr Ivanov
completed
3
Dimityr Ivanov
created
4
Stoqn Stoqnov
completed
3
Ivan Ivanov
completed
4
Stoqn Stoqnov
completed
4
Expected result
Ivan Ivanov
inprocess
Dimityr Ivanov
created
Stoqn Stoqnov
completed
Query:
SELECT distinct CustomName,
(CASE WHEN [STATUS] ='COMPLETED' THEN 'completed'
WHEN [STATUS] ='inprocess' THEN 'inprocess'
WHEN [STATUS] ='created' THEN 'created' END ) AS [STATUS]
from [dbo].[Customers]

Answer 1

You can do something like the following where you count how many of each status there are per customer and then choose in a priority order which to display.
declare #Test table (CustomName varchar(32), [STATUS] varchar(32), [Order] int)
insert into #Test (CustomName, [STATUS], [Order])
values
('Ivan Ivanov', 'completed', 1),
('Stoqn Stoqnov', 'completed', 1),
('Dimityr Ivanov', 'completed', 1),
('Ivan Ivanov', 'completed', 2),
('Dimityr Ivanov', 'completed', 2),
('Ivan Ivanov', 'inprocess', 2),
('Stoqn Stoqnov', 'completed', 2),
('Dimityr Ivanov', 'completed', 3),
('Dimityr Ivanov', 'created', 4),
('Stoqn Stoqnov', 'completed', 3),
('Ivan Ivanov', 'completed', 4),
('Stoqn Stoqnov', 'completed', 4);
with cte as (
select CustomName
, sum(case when [status] = 'completed' then 1 else 0 end) over (partition by CustomName) Completed
, sum(case when [status] = 'created' then 1 else 0 end) over (partition by CustomName) Created
, sum(case when [status] = 'inprocess' then 1 else 0 end) over (partition by CustomName) InProcess
from #Test
)
select CustomName
-- This logic could be more complex if desired
, case when InProcess > 0 then 'In Process' when Created > 0 then 'Created' else 'Completed' end
from cte
group by CustomName, Completed, Created, InProcess;
Returns:
CustomName
Status
Dimityr Ivanov
Created
Ivan Ivanov
In Process
Stoqn Stoqnov
Completed
Note: Providing the DDL+DML as I have shown, makes it much easier for people to assist.

Answer 2

I don't think this needs window functions or cross joins, just a simple GROUP BY with conditional counts
SELECT
CustomName,
CASE WHEN COUNT(CASE WHEN [status] = 'created' THEN 1 END) > 0 THEN 'Created'
WHEN COUNT(CASE WHEN [status] = 'inprocess' THEN 1 END) > 0 THEN 'In Process'
ELSE 'Completed' END
FROM YourTable t
GROUP BY t.CustomName;

Answer 3

Try the following:
The idea is to use cte to find all Customer Name who contain different type of status
and then use UNION ALL to find all Customer Name who ONLY contains "Completed" status
;WITH cte AS (
SELECT DISTINCT CustomName, [STATUS]
FROM [dbo].[Customers]
WHERE [STATUS] <> 'Completed'
)
SELECT *
FROM cte
UNION ALL
SELECT DISTINCT CustomName, [STATUS]
FROM [dbo].[Customers]
WHERE CustomName NOT IN (SELECT CustomName FROM cte)